Power Relays ( Over 2 A )
HE RELAYS PV Type
Product Catalog
2024.4
Power Relays ( Over 2 A )
HE RELAYS PV Type
Compact size,1 Form A 35 A/48 A/90 A Power relays for solar inverter
FEATURES
Protective construction：Flux-resistant type
33
38
● High capacity and compact size
35 A/48 A type:
W ( 33 mm ) × L ( 38 mm ) × H ( 36.3 mm )
90 A type:
W ( 33 mm ) × L ( 38 mm ) × H ( 38.8 mm )
36.3
38
33
35A type
38
● Contact GAP ( Initial value ) :
Wide gap type of 3.6 mm or more
33
● Contributes to energy saving in devices
thanks to reduced coil hold voltage
38.8
36.3
● High insulation: 10,000 V surge withstand
voltage ( between contact and coil )
48A type
90A type （Unit：mm）
● Conforms to various safety standards:
UL/C-UL, CSA, VDE
TYPICAL APPLICATIONS
● Inverter ( Solar and industrial )
● UPS
● Stationary charging stand
DETAILS FEATURES
■ Compact size
Due to improved conduction efficiency, wide terminal blades
are used ( for 48 A and 90 A type )
■ Coil hold voltage* reduction can reduce
consumption power.
Coil hold voltage can be reduced down 40 % of the
rated coil voltage. This is equal to operating power of
approximately 310 mW.
*Coil hold voltage is the coil voltage after 100 ms following application of the
rated coil voltage.
Note: 48 A type
■ Contact GAP
Compliant with EN61810-1 2.5k V surge withstand voltage
( between contacts )
Type
Contact GAP
35 A/48 A
2.5 mm
90 A
90 A Wide gap
3
mm
3.6 mm
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Panasonic Industry Co., Ltd. 2024
ASCTB101E 202404
Power Relays ( Over 2 A ) HE RELAYS PV Type
ORDERING INFORMATION ( PART NO. : Ordering part number for Japanese market )
AHE
Terminal shape
X：Blade terminal type / Wide blade terminal type
9：PC board terminal type
Rated coil voltage
（DC）
Part number
0 1 2 5
Rated coil voltage (V) 6 12 24 9
Contact material
N ：AgNi
Nil：AgSnO２
Operate voltage
2：70％ of Rated voltage
5：75% of Rated voltage
(90A wide gap type)
Type, contact material and switching capacity
3：PV type, AgNi type（1 Form A 48A）
4：PV type, AgSnO2 type
（1 Form A 35A）
5：PV type, AgNi type（1 Form A 90A）
ORDERING INFORMATION ( TYPE NO. : Ordering part number for non Japanese market )
HE 1a N
DC
Rated coil voltage（DC）
6, 9, 12, 24V
Contact arrangement
Terminal shape
1a：1 Form A（Single side stable type） P：PC board terminal type/
Blade terminal type
W：Wide blade terminal type
Type, contact material and switching capacity
Y5 ：PV type, AgNi type（1 Form A 48A）
H18：PV type, AgSnO 2 type（1 Form A 35A）
Y6 ：PV type, AgNi type（1 Form A 90A）
Y6H：PV type, AgNi type（1 Form A 90A Wide gap type）
TYPES
" Type No. " is ordering part number for non Japanese market. " Part No. " is ordering part number for Japanese market.
Type
Rated coil voltage
6 V DC
35 A
9 V DC
12 V DC
24 V DC
6 V DC
48 A
90 A
90 A
Wide gap type
9 V DC
12 V DC
Type No.
HE1aN-P-DC6V-H18
Part No.
HE1aN-P-DC9V-H18
AHE4295
HE1aN-P-DC12V-H18
AHE4291
HE1aN-P-DC24V-H18
AHE4292
HE1aN-P-DC6V-Y5
AHE32X0N
HE1aN-P-DC9V-Y5
AHE32X5N
HE1aN-P-DC12V-Y5
AHE32X1N
HE1aN-P-DC24V-Y5
AHE32X2N
6 V DC
HE1aN-W-DC6V-Y6
AHE52X0N
9 V DC
HE1aN-W-DC9V-Y6
AHE52X5N
HE1aN-W-DC12V-Y6
AHE52X1N
24 V DC
HE1aN-W-DC24V-Y6
AHE52X2N
6 V DC
HE1aN-W-DC6V-Y6H
AHE55X0N
9 V DC
Outer carton
25 pcs.
100 pcs.
AHE4290
24 V DC
12 V DC
Standard packing
Inner carton
HE1aN-W-DC9V-Y6H
AHE55X5N
12 V DC
HE1aN-W-DC12V-Y6H
AHE55X1N
24 V DC
HE1aN-W-DC24V-Y6H
AHE55X2N
* 35 A 6 V, 12 V and 24 V DC type: Certified by UL/C-UL ( 35 A 9 V type: Certified by UL/C-UL and VDE )
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ASCTB101E 202404
Power Relays ( Over 2 A ) HE RELAYS PV Type
RATING
■ Coil data
• Operating characteristics such as " Operate voltage " and " Release voltage " are influenced by mounting conditions, ambient
temperature, etc.
Therefore, please use the relay within ±5 % of rated coil voltage.
• " Initial " means the condition of products at the time of delivery.
Rated coil
voltage
Operate voltage*
( at 20 ℃ )
Max. 70 % V of
rated coil voltage
( Initial )
Max. 75 % V of
rated coil voltage
for 90A Wide
gap type only
6 V DC
9 V DC
12 V DC
24 V DC
Release voltage*
( at 20 ℃ )
Rated operating
current
( ±10 %, at 20 ℃ )
Coil resistance
( ±10 %, at 20 ℃ )
320 mA
18.8 Ω
213 mA
42.2 Ω
160 mA
75
Ω
80 mA
300
Ω
Min. 10 % V
of rated coil
voltage ( Initial )
Rated operating
power
Max. allowable
voltage
( at 20 ℃ )
1,920 mW
110 % V of rated
coil voltage
*square, pulse drive
■ Specifications
Specifications
Item
Contact data
Surge
withstand
voltage
( initial ) *2
48 A type
Contact
arrangement
1 Form A
Contact resistance
( initial )
Max. 100 mΩ
( by voltage drop 6 V DC 1 A )
90 A type
90 A Wide gap type
Max. 10 mΩ
( by voltage drop 5 V DC 20 A )
Max. 3 mΩ
( by voltage drop 5 V DC 90 A, reference value )
Contact material
AgSnO2 type
AgNi type
Contact rating
( resistive )
35 A 490 V AC,
35 A 48 V DC
48 A 490 V AC,
48 A 48 V DC
60 A 490 V AC,
90 A 60 V DC
55 A 800 V AC,
90 A 60 V DC
Max. switching
power ( resistive )
17,150 VA, 1,680 W
23,520 VA, 2,304 W
29,400 VA, 5,400 W
44,000 VA, 5,400 W
Max. switching
voltage
490 V AC, 48 V DC
490 V AC, 60 V DC
800 V AC, 60 V DC
Max. switching current
35 A
Min. switching load
( reference value ) *1
100 mA 5 V DC
Insulation resistance ( initial )
Dielectric
strength
( initial )
35 A type
48 A
Min. 1,000 MΩ ( at 500 V DC, Measured portion is the same as the case of dielectric strength. )
Between open contacts
2,000 Vrms for 1 min ( detection current: 10 mA )
Between contact
and coil
5,000 Vrms for 1 min ( detection current: 10 mA )
Between contact
and coil
10,000 V
Coil holding voltage*2
90 A
40 to 100 % V ( at −50 to ＋55 ℃ )
50 to 60 % V ( at ＋55 to ＋85 ℃ )
Time
characteristics
( initial )
Operate time
Max. 30 ms at rated coil voltage ( at 20 ℃, without bounce )
Release time*5
Max. 10 ms at rated coil voltage ( at 20 ℃, without bounce, without diode )
Shock
resistance
Functional
98 m/s2 ( half-sine shock pulse: 11 ms, detection time: 10 µs )
Destructive
980 m/s2 ( half-sine shock pulse: 6 ms )
Vibration
resistance
Functional
10 to 55 Hz ( at double amplitude of 1 mm, detection time: 10 µs )
Destructive
10 to 55 Hz ( at double amplitude of 1.5 mm )
Expected life
Mechanical life
Min. 10 x 106 ope.
( switching frequency: at 180 times/min )
Conditions
Conditions for
usage, transport and
storage*4
Ambient temperature: −50 to ＋85 ℃
( When using at 55 ℃ or higher, the coil holding voltage should be 50 % V to 60 % V )
Humidity: 5 to 85 % RH ( Avoid icing and condensation )
Unit weight
Approx. 80 g
Min. 106 ope.
( switching frequency: at 180 times/min )
Approx. 85 g
*1: This value can change due to the switching frequency, environmental conditions, and desired reliability level, therefore it is recommended to check this with the
actual load.
*2: Wave is standard shock voltage of ±1.2×50 µs according to JEC-212-1981
*3: Coil holding voltage is the coil voltage after 100 ms from the applied rated voltage.
*4: For ambient temperature, please read " GUIDELINES FOR RELAY USAGE " .
*5: Release time will lengthen if a diode, etc., is connected in parallel to the coil. Be sure to verify operation under actual conditions.
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Panasonic Industry Co., Ltd. 2024
ASCTB101E 202404
Power Relays ( Over 2 A ) HE RELAYS PV Type
■ Expected electrical life
Type
Load
35 A
Resistive load
Resistive load
48 A
Inductive
load
1 Form A
90 A/
90 A Wide gap type
90 A
Wide gap type
Resistive load
Resistive load
Switching capacity
Number of operations
30 A 250 V AC
Min. 200 × 103 ope. ( room temperature, switching frequency at 20 times/min )
35 A 277 V AC
Min. 30 × 103 ope. ( at 85 ℃, switching frequency ON : OFF ＝ 1 s : 9 s )
35 A 490 V AC
Min. 10 × 103 ope. ( room temperature, switching frequency ON : OFF ＝ 1 s : 9 s )
35 A 48 V DC
Min. 10 × 103 ope. ( room temperature, switching frequency ON : OFF ＝ 1 s : 9 s )
48 A 277 V AC
Min. 30 × 103 ope. ( at 85 ℃, switching frequency ON : OFF ＝ 1 s : 9 s )
48 A 490 V AC
Min. 10 × 103 ope. ( room temperature, switching frequency ON : OFF ＝ 1 s : 9 s )
48 A 30 V DC
Min. 30 × 103 ope. ( at 85 ℃, switching frequency ON : OFF ＝ 1 s : 9 s )
48 A 48 V DC
Min. 10 × 103 ope. ( room temperature, switching frequency ON : OFF ＝ 1 s : 9 s )
48 A 250 V AC
( cos φ ＝ 0.8 )
Min. 30 × 103 ope. ( at 85 ℃, switching frequency ON : OFF ＝ 0.1 s : 10 s )
72 A 250 V AC
( cos φ ＝ 0.8 )
Min. 50 ope.
( at 85 ℃, switching frequency ON : OFF ＝ 0.1 s : 10 s )
3
60 A 277 V AC
Min. 10 × 10 ope. ( at 85 ℃, switching frequency ON : OFF ＝ 1 s : 9 s )
60 A 490 V AC
Min. 10 × 103 ope. ( room temperature, switching frequency ON : OFF ＝ 1 s : 9 s )
80 A 277 V AC
Min. 10 × 103 ope. ( room temperature, switching frequency ON : OFF ＝ 1 s : 9 s )
90 A 277 V AC
Min. 103 ope.
80 A 48 V DC
Min. 10 × 103 ope. ( room temperature, switching frequency ON : OFF ＝ 1 s : 9 s )
90 A 60 V DC
Min. 103 ope.
55 A 800 V AC
( at 85 ℃, switching frequency ON : OFF ＝ 1 s : 9 s )
( at 85 ℃, switching frequency ON : OFF ＝ 1 s : 9 s )
3
Min. 10 ope.
( room temperature, switching frequency ON : OFF ＝ 1s : 9 s )
REFERENCE DATA
1-1. Max. switching capacity
( AC Resistive load )
1-2. Max. switching capacity
( DC Resistive load )
Tested sample：HE 1a N-P-DC 9V-H18, 6 pcs.
Measured portion：Coil inside
Contact carrying current：35A
Ambient temperature：25℃, 60℃, 85℃
1,000
500
500
90A Wide gap type
Contact current (A)
90A type
100
50
35A type
10
48A type
70
90A type
Temperature rise（℃）
1,000
Contact current (A)
2-1. Coil temperature characteristics
( 35 A type: Average )
100
50
10 35A type
48A type
1
0.5
1
0.5
60
25℃
50
60℃
85℃
40
30
20
10
2-2. Coil temperature characteristics
( 48 A type: Average )
Tested sample：HE 1a N-P-DC 9V-Y5, 6 pcs.
Measured portion：Coil inside
Contact carrying current：48A
Ambient temperature：25℃, 60℃, 85℃
70
60
60
25℃
60℃
85℃
40
30
10
70
80
90
100
Coil applied voltage（%V）
70
80
90
100
Coil applied voltage（%V）
60℃
85℃
ｰ60 ｰ40 ｰ20
0
30
10
60
60
Test sample：HE-PV (35A, 48A, 90A), 3pcs.
40
20
0 50
0 50
25℃
50
20
0
0
3. Ambient temperature characteristics
Tested sample：HE 1a N-W-DC 12V-Y6, 6 pcs.
Measured portion：Coil inside
Contact carrying current：90A
Ambient temperature：25℃, 60℃, 85℃
70
50
100
500 1,000
Contact voltage (V)
2-3. Coil temperature characteristics
( 90 A type: Average )
Temperature rise（℃）
Temperature rise（℃）
30
100
500 1,000
Contact voltage (V)
（％）
Rate of change
30
0
40
Operate
voltage
ｰ10
30
20
10
20 40 60 80 100
Ambient
（°
temperature
C）
ｰ20
Release
voltage ｰ30
50
60
70
80
90 100
Coil applied voltage（%V）
110
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Panasonic Industry Co., Ltd. 2024
ASCTB101E 202404
Power Relays ( Over 2 A ) HE RELAYS PV Type
4-1. Electrical life test ( 35 A type: resistive load 277 V AC 35 A, at 85 ℃ )
Contact
welding detection
and Mis-contacting
detection circuit
277V AC
9V DC
Operate and release voltage（V）
Operate and release voltage
Change of contact resistance
9
100
8
90
7
6
Operate voltage
5
Max.
Ave.
Min.
4
3
Release voltage
2
Max.
Ave.
Min.
1
0
Contact resistance（mΩ）
Tested sample：HE 1a N-P-DC 9V-H18, 6 pcs.
Operation frequency：6 times/min.
（ON：OFF=1s：9s）
Circuit：
80
70
60
50
40
30
20
Max.
Ave.
Min.
10
0
0
3
0
No. of operations（×104）
3
No. of operations（×104）
4-2. Electrical life test ( 48 A type: resistive load 277 V AC 48 A, at 85 ℃ )
Contact
welding detection
and Mis-contacting
detection circuit
277V AC
9V DC
Operate and release voltage（V）
Operate and release voltage
Change of contact resistance
9
100
8
90
7
6
Operate voltage
5
Max.
Ave.
Min.
4
3
Max.
Ave.
Min.
Release voltage
2
1
0
Contact resistance（mΩ）
Tested sample：HE 1a N-P-DC 9V-Y5, 6 pcs.
Operation frequency：6 times/min.
（ON：OFF=1s：9s）
Circuit：
80
70
60
50
40
30
20
Max.
Ave.
Min.
10
0
0
3
0
No. of operations（×104）
3
No. of operations（×104）
4-3. Electrical life test ( 90 A type: resistive load 277 V AC 80 A, at 25 ℃ )
Tested sample：HE 1a N-W-DC12V-Y6, 6 pcs.
Operation frequency：6 times/min.
（ON：OFF=1s：9s）
Circuit：
Operate and release voltage
10
8
Operate voltage
7
Max.
Ave.
Min.
6
5
4
3
Release voltage
2
Max.
Ave.
Min.
1
0
Tested sample：HE1aN-W-DC12V-Y6, 20pcs.
Conditions：5 V DC, 20 A
7
6
5
4
3
2
Max.
Ave.
Min.
0
1
0
0
1
No. of operations（×104）
Tested sample：HE1aN-W-DC12V-Y6, 20pcs.
Conditions：5 V DC, 90 A
16
Max.
Ave
Min.
14
12
3.3
1.3
0.6
10
8
12
0.6
0.5
0.4
10
8
6
6
4
4
2
2
0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0
Contact resistance（mΩ）
Max.
Ave
Min.
14
n pcs.
n pcs.
8
5-2. Contact resistance ( 5 V DC 90 A )
16
0
9
1
No. of operations（×104）
5-1. Contact resistance ( 5 V DC 20 A )
Contact resistance（mΩ）
12V DC
Operate and release voltage（V）
Contact
welding detection
and Mis-contacting
detection circuit
277V AC
Change of contact resistance
9
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Contact resistance（mΩ）
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ASCTB101E 202404
Power Relays ( Over 2 A ) HE RELAYS PV Type
DIMENSIONS ( Unit: mm )
CAD The CAD data of the products with a
CAD
mark can be downloaded from our Website.
■ 35 A type
CAD
External dimensions
Recommended PC board pattern
Schematic
( BOTTOM VIEW )
( BOTTOM VIEW )
38
24
8.4
18.6
4.7
6ｰφ2
hole
33
1
4
6
5
32
4
0.5
36.3
Tolerance ±0.1
1.6
0.8
4.7
1.6
0.8
General tolerance
Less than 1mm：±0.1
Min. 1mm less than 3mm：±0.2
Min. 3mm：±0.3
Note: Terminal dimensions are values without pre-soldering thickness.
■ 48 A type
CAD
External dimensions
Recommended PC board pattern
( BOTTOM VIEW )
24
38
8.4
18.6
1.3
6.5
2ｰφ2
hole
33
Schematic
( BOTTOM VIEW )
1
4
6
5
36.3
32
4
0.5
Tolerance ±0.1
6.3
0.8
1.6
0.8
General tolerance
Less than 1mm：±0.1
Min. 1mm less than 3mm：±0.2
Min. 3mm：±0.3
Note: Terminal dimensions are values without pre-soldering thickness.
■ 90 A, 90 A wide gap type
CAD
Recommended PC board pattern
( BOTTOM VIEW )
20
12
38
(R)
13.3
23.5
1.8
External dimensions
38.8
3.6
33
1.2
Schematic
( BOTTOM VIEW )
1
4
6
5
(R)
32
4
3
Tolerance ±0.1
0.8
9.7±0.2
2
1.2
General tolerance
Less than 1mm：±0.1
Min. 1mm less than 3mm：±0.2
Min. 3mm：±0.3
Note: Terminal dimensions are values without pre-soldering thickness.
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Panasonic Industry Co., Ltd. 2024
ASCTB101E 202404
Power Relays ( Over 2 A ) HE RELAYS PV Type
SAFETY STANDARDS
Each standard may be updated at any time, so please check our Website for the latest information.
■ UL ( Approved )
■ VDE ( Approved )
35 A type
35 A type
File No.
E43028
Contact rating
Operations
File No.
Contact rating
Operations
Ambient
temperature
100 × 103
40006681
35 A 250 V AC ( cosφ ＝ 1.0 )
50 × 103
80 ℃
100 × 103
Note: For only 9 V DC coil
Operations
Ambient
temperature
72 A 250 V AC ( cosφ ＝ 0.8 )
50
85 ℃
60 A 250 V AC ( cosφ ＝ 0.8 )
10 × 103
85 ℃
50 A 20 V DC ( 0 ms )
30 × 103
85 ℃
48 A 250 V AC ( cosφ ＝ 0.8 )
30 × 103
85 ℃
Contact rating
Operations
Ambient
temperature
Ambient
temperature
90 A 300 V AC ( cosφ ＝ 1.0 )
103
85 ℃
−
90 A 250 V AC ( cosφ ＝ 0.8 )
103
85 ℃
80 A 250 V AC ( cosφ ＝ 1.0 )
10 × 103
25 ℃
80 A 250 V AC ( cosφ ＝ 0.8 )
10 × 103
85 ℃
135 A 250 V AC ( cosφ ＝ 0.8 )
50
85 ℃
35 A 277 V AC
10 × 103
30 A 277 V AC
30 A 30 V DC
3 HP 250 V AC
100 × 103
1.5 HP 125 V AC
100 × 103
48 A type
File No.
■ UL/C-UL ( Approved )
48 A type
File No.
E43028
Contact rating
60 A 277 V AC
Operations
10 × 10
48 A 277 V AC
3
60 ℃
3
85 ℃
30 × 10
40006681
Ambient
temperature
Contact rating
90 A, 90 A Wide gap type
90 A, 90 A Wide gap type
File No.
E43028
File No.
Contact rating
80 A 300 V AC
Operations
10 × 10
3
6 × 10
3
80 A 300 V AC
40006681
85 ℃
90 A Wide gap type
File No.
E43028
Contact rating
Operations
Ambient
temperature
6 × 103
−
55 A 600 V AC
90 A Wide gap type
■ CSA ( Approved )
File No.
Contact rating
Operations
Ambient
temperature
40006681
55 A 800 V AC ( cos φ ＝ 1.0 )
103
25 ℃
35 A type
File No.
1011904
Contact rating
Operations
35 A 277 V AC
10 × 103
30 A 277 V AC
100 × 103
30 A 30 V DC
100 × 103
3HP 250 V AC
100 × 103
1.5HP 125 V AC
100 × 103
■ TV rating
35 A type
File No.
E43028
Contact rating
TV-15
48 A type, 90 A type
CSA standard approved by C-UL
INSULATION CHARACTERISTICS ( IEC61810-1 )
Item
Characteristics
Clearance/Creepage distance ( IEC61810-1 )
Min. 5.5 mm/8.0 mm
Category of protection ( IEC61810-1 )
RT II
Tracking resistance ( IEC60112 )
PTI 175
Insulation material group
III a
Over voltage category
III
Rated voltage
250 V
Pollution degree
3
Type of insulation ( Between contact and coil )
Reinforced insulation
Type of insulation ( Between open contact )
Full disconnection
Note: Actual value
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Panasonic Industry Co., Ltd. 2024
ASCTB101E 202404
Power Relays ( Over 2 A ) HE RELAYS PV Type
GUIDELINES FOR USAGE
■ For cautions for use, please read "GUIDELINES FOR RELAY USAGE".
https://industrial.panasonic.com/ac/e/control/relay/cautions_use/index.jsp
■ Cautions for usage of HE-PV relay
● Usage, transport and storage conditions
● DC load guidelines
1) Ambient temperature : −50 to ＋85 ℃
In case the relay is used as a DC high voltage switch, the
final failure mode may be uninterruptible.In the event that
( When using at ＋55 ℃ or higher, the coil holding
voltage should be 50 % V to 60 % V )
the power supply cannot be cut off, in the worst case,the
2) Humidity:
fire may spread to the surrounding area. Therefore,
5 to 85 % RH ( Avoid icing and condensation )
configure the power supply so that it can be turned off
Note: The humidity range varies with the temperature. Use within the range
indicated in the graph below.
within one second. Also,consider a fail safe circuit for
your equipment.
3) Atmospheric pressure:
Use a varistor to absorb the surge of the coil.
If a diode is used, the contact separation speed will be
slow and the cutoff performance will be degraded.
< Recommended Varistor >
Energy tolerance: 1 J or more
varistor voltage : 1.5 times or more of the rated coil
voltage
When using an inductive load ( L load ) with L/R > 1
ms, take surge absorption measures in parallel with the
inductive load.
86 to 106 kPa
[Temperature and humidity range for usage, transport and storage]
Humidity (％ RH)
85
Allowable range
Avoid condensation when
used at temperatures higher
than 0°C
Avoid icing
when used at
temperatures
lower than 0°C
5
ｰ50
0
55
85
Ambient temperature (℃)
When using ＋55 to ＋85℃
Coil holding Voltage： 50 to 60 % V
● About parallel relay connections
When multiple relays are connected in parallel, design the
equipment so that the load applied to each relay is within
the specified range.
( Concentration of load on one relay leads to early failure. )
● Ambient Atmosphere
If the relay is used or stored in an atmosphere of corrosive
gas ( Sulfurous acid gas: SO2, hydrogen sulfide gas: H2S )
, corrosive gas components may adhere to the contacts,
resulting in contact failure. Do not use or store the relay
in such an atmosphere.
● Method for reducing coil holding voltage
When the coil holding voltage is used by PWM control,
the release voltage varies depending on the operating
temperature and operating conditions. Therefore,
please evaluate the coil holding voltage under the worst
operating conditions.
Recommended operating condition:
Periods: 20 kHz to 100 kHz, Duty Ratio: 50 %
● About conductor cross-sectional area during mounting
When designing a printed circuit board, ensure that there
is sufficient margin in the conductor width and conductor
spacing. To reduce the temperature rise, refer to the
cross-sectional area of the conductor of UL 508.
Panasonic Industry Co., Ltd. Electromechanical Control Business Division
industrial.panasonic.com/ac/e/
ー8ー
Panasonic Industry Co., Ltd. 2024
ASCTB101E 202404
GUIDELINES FOR POWER, HIGH-CAPACITY DC CUT OFF AND SAFETY RELAYS USAGE
■ For cautions for use, please read " GUIDELINES FOR RELAY USAGE ".
https://industrial.panasonic.com/ac/e/control/relay/cautions_use/index.jsp
Precautions for Coil Input
■ Long term current carrying
■ Coil connection
A circuit that will be carrying a current continuously for
When connecting coils of polarized relays, please check coil
long periods without relay switching operation. ( circuits
polarity ( ＋, − ) at the internal connection diagram
for emergency lamps, alarm devices and error inspection
that, for example, revert only during malfunction and
( Schematic ). If any wrong connection is made, it may
cause unexpected malfunction, like abnormal heat, fire and
output warnings with form B contacts ) Continuous, long-
so on, and circuit do not work. Avoid impressing voltages to
term current to the coil will facilitate deterioration of coil
insulation and characteristics due to heating of the coil itself.
the set coil and reset coil at the same time.
For circuits such as these, please use a magnetic-hold type
latching relay. If you need to use a single stable relay, use
a sealed type relay that is not easily affected by ambient
conditions and make a failsafe circuit design that considers
the possibility of contact failure or disconnection.
■ Maximum allowable voltage and temperature
rise
■ DC Coil operating power
Steady state DC current should be applied to the coil. The
wave form should be rectangular. If it includes ripple, the
ripple factor should be less than 5 %.
However, please check with the actual circuit since the
electrical characteristics may vary. The rated coil voltage
should be applied to the coil and the set/reset pulse time of
latching type relay differs for each relays, please refer to the
relay's individual specifications.
Proper usage requires that the rated coil voltage be
impressed on the coil. Note, however, that if a voltage
greater than or equal to the maximum continuous voltage
is impressed on the coil, the coil may burn or its layers short
due to the temperature rise. Furthermore, do not exceed the
usable ambient temperature range listed in the catalog.
● Operate voltage change due to coil temperature rise
In DC relays, after continuous passage of current in
the coil, if the current is turned OFF, then immediately
turned ON again, due to the temperature rise in the
coil, the operate voltage will become somewhat
higher. Also, it will be the same as using it in a higher
temperature atmosphere. The resistance/temperature
relationship for copper wire is about 0.4 % for 1 ℃,
and with this ratio the coil resistance increases. That
is, in order to operate of the relay, it is necessary that
the voltage be higher than the operate voltage and the
operate voltage rises in accordance with the increase
in the resistance value. However, for some polarized
relays, this rate of change is considerably smaller.
Panasonic Industry Co., Ltd. Electromechanical Control Business Division
industrial.panasonic.com/ac/e/
ー9ー
Panasonic Industry Co., Ltd. 2023
ASCTB412E 202301
GUIDELINES FOR POWER, HIGH-CAPACITY DC CUT OFF AND SAFETY RELAYS USAGE
Ambient Environment
■ Usage, Transport, and Storage Conditions
During usage, storage, or transportation, avoid locations
●Icing
subjected to direct sunlight and maintain normal
Condensation or other moisture may freeze on relays
when the temperature become lower than 0 ℃.This
temperature, humidity and pressure conditions.
●Temperature/Humidity/Pressure
icing causes the sticking of movable portion, the
When transporting or storing relays while they are tube
packaged, there are cases the temperature may differ
from the allowable range. In this case be sure to check
operation delay and the contact conduction failure etc.
Panasonic Industry Co., Ltd. does not guarantee the
the individual specifications.
failures caused by the icing.
The heat conduction by the equipment may accelerate
Also allowable humidity level is influenced by
the cooling of relay itself and the icing may occur.
temperature, please check charts shown below and
Please conduct product evaluations in the worst
condition of the actual usage.
use relays within mentioned conditions. ( Allowable
temperature values differ for each relays, please refer
to the relay's individual specifications. )
1) Temperature:
The tolerance temperature range differs for
each relays, please refer to the relay's individual
specifications
2) Humidity: 5 to 85 % RH
●Low temperature and low humidity
The plastic becomes brittle if the relay is exposed to a
low temperature, low humidity environment for long
periods of time.
●High temperature and high humidity
Storage for extended periods of time ( including
transportation periods ) at high temperature or high
humidity levels or in atmospheres with organic gases
or sulfide gases may cause a sulfide film or oxide film
to form on the surfaces of the contacts and/or it may
interfere with the functions. Check out the atmosphere
in which the units are to be stored and transported.
Humidity (％ RH)
85
Allowable range
Avoid icing
when used at
temperatures
lower than 0°C
Avoid condensation when
used at temperatures higher
than 0°C
●Package
In terms of the packing format used, make every effort
to keep the effects of moisture, organic gases and
sulfide gases to the absolute minimum.
5
-40
0
85
Ambient temperature (℃)
3) Pressure: 86 to 106 kPa
●Silicon
●Dew condensation
Condensation occurs when the ambient temperature
drops suddenly from a high temperature and humidity,
or the relay is suddenly transferred from a low ambient
temperature to a high temperature and humidity.
Condensation causes the failures like insulation
deterioration, wire disconnection and rust etc.
Panasonic Industry Co., Ltd. does not guarantee the
failures caused by condensation.
The heat conduction by the equipment may accelerate
the cooling of device itself, and the condensation may
occur.
Please conduct product evaluations in the worst
condition of the actual usage. ( Special attention should
be paid when high temperature heating parts are close
to the device. Also please consider the condensation
may occur inside of the device. )
When a source of silicone substances ( silicone rubber,
silicone oil, silicone coating materials and silicone filling
materials etc. ) is used around the relay, the silicone gas
( low molecular siloxane etc. ) may be produced.
This silicone gas may penetrate into the inside of the
relay. When the relay is kept and used in this condition,
silicone compound may adhere to the relay contacts
which may cause the contact failure. Do not use any
sources of silicone gas around the relay ( Including
plastic sealed types ).
●NOx Generation
When relay is used in an atmosphere high in humidity
to switch a load which easily produces an arc, the NOx
created by the arc and the water absorbed from outside
the relay combine to produce nitric acid.
This corrodes the internal metal parts and adversely
affects operation.
Avoid use at an ambient humidity of 85 % RH or higher
( at 20 ℃ ). If use at high humidity is unavoidable,
please contact our sales representative.
Panasonic Industry Co., Ltd. Electromechanical Control Business Division
industrial.panasonic.com/ac/e/
ー 10 ー
Panasonic Industry Co., Ltd. 2023
ASCTB412E 202301
GUIDELINES FOR POWER, HIGH-CAPACITY DC CUT OFF AND SAFETY RELAYS USAGE
Others
■ Cleaning
• Cleaning with the boiling method is recommended ( The
• Although the environmentally sealed type relay ( plastic
sealed type, etc. ) can be cleaned, avoid immersing
temperature of cleaning liquid should be 40 ℃ or lower ).
the relay into cold liquid ( such as cleaning solvent )
immediately after soldering. Doing so may deteriorate the
Avoid ultrasonic cleaning on relays. Use of ultrasonic
cleaning may cause breaks in the coil or slight sticking of
sealing performance.
the contacts due to ultrasonic energy.
Please refer to "the latest product specifications"
when designing your product.
•Requests to customers:
https://industrial.panasonic.com/ac/e/salespolicies/
Panasonic Industry Co., Ltd. Electromechanical Control Business Division
industrial.panasonic.com/ac/e/
ー 11 ー
Panasonic Industry Co., Ltd. 2023
ASCTB412E 202301
■ Global Sales Network Information: industrial.panasonic.com/ac/e/salesnetwork
Electromechanical Control Business Division
1006, Oaza Kadoma, Kadoma-shi, Osaka 571-8506, Japan
industrial.panasonic.com/ac/e/
©Panasonic Industry Co., Ltd. 2024
Specifications are subject to change without notice.
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