High capacity DC cut-off Relays
HE-V RELAYS
Product Catalog
2023.5
High capacity DC cut-off Relays
HE-V RELAYS
Max. 1,000 V DC, 20 A cut-off possible, High capacity DC power relays
FEATURES
Protective construction:Flux-resistant type
● Max. 1,000 V DC, 20 A cut-off has been
achieved ( at contact connected in series )
50
● Contact arrangement: 2 Form A
400 V DC, 20 A per 1 Form A
41
● Compact size
39.4
TYPICAL APPLICATIONS
● Photovoltaic power generation systems
● Battery charge and discharge systems
● Inverter control, DC load control, etc.
(Unit:mm)
DETAILS FEATURES
■ Contributes to energy saving in devices thanks
to reduced coil holding voltage
■ Compact size ( W: 41 × L: 50 × H: 39.4 mm )
Max. 1,000 V DC, 20 A cut-off has been achieved
( at contact connected in series )
Coil holding voltage can be reduced down to 33 % of
the rated coil voltage. This equals to operating power of
approximately 210 mW.
Contact connection
method
5
6
1
2
3
* Coil holding voltage: coil voltage after 100 ms following application of the
rated coil voltage
4
ORDERING INFORMATION ( PART NO. : Ordering part number for Japanese market )
AHEV 2 2 9
Contact arrangement
2:2 Form A, 20A
Operating function
2:Single side stable
Terminal shape
9:PC board terminal type
Rated coil voltage(DC)
0 1 2 5 7
Part No.
Rated coil voltage(V) 6 12 24 9 15
ORDERING INFORMATION ( TYPE NO. : Ordering part number for non Japanese market )
HEV 2a N
P DC
Operate voltage
Contact arrangement
2a:2 Form A
N:70% of rated voltage
(Single side stable type)
Terminal shape
P:PC board terminal type
Rated coil voltage(DC)
6, 9, 12, 15, 24V
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Panasonic Industry Co., Ltd. 2023
ASCTB326E 202305
High capacity DC cut-off Relays HE-V RELAYS
TYPES
" Type No. " is ordering part number for non Japanese market. " Part No. " is ordering part number for Japanese market.
Contact arrangement
Rated coil voltage
Type No.
6 V DC
HEV2aN-P-DC6V
9 V DC
2 Form A
Standard packing
Part No.
Inner carton
Outer carton
10 pcs.
50 pcs.
AHEV2290
HEV2aN-P-DC9V
AHEV2295
12 V DC
HEV2aN-P-DC12V
AHEV2291
15 V DC
HEV2aN-P-DC15V
AHEV2297
24 V DC
HEV2aN-P-DC24V
AHEV2292
RATING
■ Coil data
• Operating characteristics such as " Operate voltage " and " Release voltage " are influenced by mounting conditions or
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.
Operate
voltage*
( at 20 ℃ )
Release voltage*
( at 20 ℃ )
Max. 70 % V
of rated coil
voltage
( Initial )
Min. 5 % V
of rated coil
voltage
( Initial )
Rated coil
voltage
Rated operating
current
( ±10 %, at 20 ℃ )
6 V DC
9 V DC
12 V DC
15 V DC
Coil resistance
( ±10 %, at 20 ℃ )
320 mA
18.8 Ω
213 mA
42.2 Ω
160 mA
75
Max. allowable
voltage
( at 55 ℃ )
1,920 mW
110 % V of
rated coil
voltage
Ω
128 mA
117
Ω
80 mA
300
Ω
24 V DC
Rated operating
power
* Square, pulse drive
■ Specifications
Item
Contact data
2 Form A
Contact resistance
( initial )
Max. 100 mΩ ( by voltage drop 6 V DC 1 A )
Max. 3 mΩ ( by voltage drop 6 V DC 20 A, reference value )
Contact material
AgNi type
Contact rating
( resistive )
20 A 800 V DC, 25 A 600 V DC ( at contact connected in series )
20 A 400 V DC ( at 1 Form A contact only )
Max. switching voltage
1,000 V DC
Max. switching current
25 A
Min. switching load
( reference value ) *1
100 mA 5 V DC
Insulation resistance ( initial )
Short current ( initial )
Dielectric
strength
( initial )
Surge withstand
voltage ( initial ) *2
Between open contacts
Shock resistance
Min. 1,000 MΩ ( at 1,000 V DC, Measured portion is the same as the case of dielectric strength. )
Max. 300 A 1 ms ( reference value )
2,000 V rms for 1 min ( detection current: 10 mA )
Between contact sets
4,000 V rms for 1 min ( detection current: 10 mA )
Between contact and coil
5,000 V rms for 1 min ( detection current: 10 mA )
Between contact and coil
10,000 V
Coil holding voltage*3
Time characteristic
( initial )
Specifications
Contact arrangement
Operate time
33 to 110 % V ( at −40 to +55 ℃: contact carrying current 25 A )
33 to 60 % V ( at −40 to +85 ℃: contact carrying current 25 A )
Max. 30 ms at rated coil voltage ( at 20 ℃, without bounce )
Release time
Max. 10 ms at rated coil voltage ( at 20 ℃, without bounce, without diode )
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. 106 ope. ( switching frequency: at 180 times/min )
Conditions
Conditions for
usage, transport and
storage*4
Ambient temperature: −40 to +55 ℃ ( when coil holding voltage is 33 % to 110 % of rated coil voltage )
−40 to +85 ℃ ( when coil holding voltage is 33 % to 60 % of rated coil voltage )
Humidity: 5 to 85 % RH ( Avoid icing and condensation )
Unit weight
*1:
*2:
*3:
*4:
Approx. 120 g
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.
Wave is standard shock voltage of ±1.2 × 50 µs according to JEC-212-1981
Coil holding voltage is the coil voltage after 100 ms from the applied rated coil voltage.
For ambient temperature, please read " GUIDELINES FOR RELAY USAGE ".
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Panasonic Industry Co., Ltd. 2023
ASCTB326E 202305
High capacity DC cut-off Relays HE-V RELAYS
■ Expected electrical life
● Contact connected in series
Conditions: at 20 ℃ ( L/R ≦ 1 ms ) , switching frequency ON : OFF = 1 s : 9 s
Load
Switching capacity
Resistive load
Overload
Number of operations
20 A
600 V DC
Min. 10 × 103 ope.
20 A
800 V DC
Min. 103 ope.
25 A
600 V DC
Min. 6 × 103 ope.
20 A 1,000 V DC
Min. 10 ope.
Reverse direction
−20 A
400 V DC
Min. 103 ope.
Inrush resistance current
40 A
800 V DC
Min. 103 ope.
● 1 Form A contact only
Conditions: at 20 ℃ ( L/R ≦ 1 ms ) , switching frequency ON : OFF = 1 s : 9 s
Load
Switching capacity
Number of operations
20 A 300 V DC
Min. 10 × 103 ope.
20 A 400 V DC
Min. 103 ope.
Resistive load
Overload
20 A 500 V DC
Min. 10 ope.
Reverse direction
−20 A 200 V DC
Min. 103 ope.
Inrush resistance current
40 A 400 V DC
Min. 103 ope.
● Recommended circuit
Positive polarity of load should be connected to pin 1 and pin 3, refer to the following circuit schematics.
Contact connected in series ( BOTTOM VIEW )
Current
2
Load
circuit
2
Load circuit
5
Power supply
for relay coil
3(+)
Current
Power supply
for load
Current
Coil surge protection
device:Varistor
1(+) 6
Power supply
for relay coil
3(+)
4
Current
Power supply
for load
Coil surge protection
device:Varistor
1(+) 6
Power supply
for load
1 Form A contact only ( BOTTOM VIEW )
4
5
Load circuit
REFERENCE DATA
1. Max. switching capacity
2-1. Switching and cut-off life curve
( Forward direction )
2-2. Switching and cut-off life curve
( Forward direction )
[Contact connected in series]
20A Cut-off only above 20A
Switching and cut-off
possible 20A or less
600V DC
1,000
DC resistive load
20
10
Contact connected in series
1 Form A contact only
1
10
100
Contact voltage(V)
1,000
1
1
300V DC
1,000
800V DC
100
10
1,000V DC
100
Contact current(A)
1,000
400V DC
100
10
10
Load:Resistive
10,000
No. of operations(cycle)
100
1
Load:Resistive
10,000
No. of operations(cycle)
Contact current(A)
1,000
[1 Form A contact only]
20A Cut-off only above 20A
Switching and cut-off
possible 20A or less
1
1
500V DC
10
100
Contact current(A)
1,000
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Panasonic Industry Co., Ltd. 2023
ASCTB326E 202305
High capacity DC cut-off Relays HE-V RELAYS
3. Coil temperature characteristics
4. Ambient temperature characteristics
( Average )
Tested sample:HEV2aN-P-12V DC, 6 pcs.
Measured portion:Coil inside
Contact current:20A
Ambient temperature:25℃,55℃,85℃
(%)
Rate of change
Temperature rise(℃)
70
25℃
55℃
85℃
60
50
40
ー60 ー40 ー20
0
30
ー10
20
20
10
Release
voltage
Operate voltage
20 40 60 80 100
Ambient
(℃)
temperature
ー20
10
0
30
ー30
50
60
70
80
90
100
Coil applied voltage(%V)
110
DIMENSIONS ( Unit: mm )
CAD
CAD
mark can be downloaded from our Website.
External dimensions
Recommended
PC board pattern
( BOTTOM VIEW )
41
40
10ーφ2.1
15.15 10.25
16.5
2ーφ4.5
50
4.9
Marking
(44.7)
39.4
4.4
(12.2)
(12.2)
4.4
13.2
37.6
Schematic
( BOTTOM VIEW )
4.4
+
−
CAD The CAD data of the products with a
4.4
5.3
Tolerance ±0.1
25.4
8ー1.6
4ー4.4
13.2
37.6
40
(3.2)
(3.2)
8ー0.8
2ー1.6
24.5
16.5
(15.15)
10.25
2ー0.8
General tolerance ±0.3
SAFETY STANDARDS
Each standard may be updated at any time, so please check our Website for the latest information.
■ CSA ( Approved )
■ UL/C-UL ( Approved )
File No.
E43028
Contact rating
Operations
Ambient
temperature
25 A 600 V DC Same polarity only
6 × 103
85 ℃
20 A 600 V DC Same polarity only
10 × 103
85 ℃
Operations
Ambient
temperature
20 A 1,000 V DC
10
85 ℃
20 A
800 V DC
103
85 ℃
20 A
600 V DC
10 × 103
85 ℃
CSA standard approved by C-UL
■ VDE ( Approved )
File No.
40006681
Contact rating
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Panasonic Industry Co., Ltd. 2023
ASCTB326E 202305
High capacity DC cut-off Relays HE-V RELAYS
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-V relay
● Usage, transport and storage conditions
1) Temperature
[ Temperature and humidity range for usage, transport,
and storage ]
[ Coil holding voltage 33 to 110 % V ]
−40 to +55 ℃ ( When coil holding voltage is 33 to 110 % V )
−40 to +85 ℃ ( When coil holding voltage is 33 to 60 % V )
2) Humidity
5 to 85 % RH ( Avoid icing and condensation )
Humidity(%RH)
Note) The humidity range varies with the temperature. Use within the
range indicated in the graph.
85
3) Atmospheric pressure
86 to 106 kPa
4) Condensation
Condensation forms when there is a sudden change
in temperature under high temperature and high
humidity conditions. Condensation will cause
deterioration of the relay insulation.
5) Freezing
Condensation or other moisture may freeze on the
relay when the temperatures is lower than 0 ℃. This
causes problems such as sticking of movable parts or
operational time lags.
6) Low temperature and low humidity environments
The plastic becomes brittle if the relay is exposed to a
low temperature, low humidity environment for long
periods of time.
Allowable range
Avoid conAvoid icing
densation when
when used at used at temtemperatures peratures higher
lower than 0°C than 0°C
5
0
55
-40
Ambient temperature(℃)
[ Coil holding voltage 33 to 60 % V ]
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
5
-40
0
85
Ambient temperature (℃)
● Solder and cleaning conditions
Please obey the following conditions.
1) Automatic soldering
( 1 ) Preheating
Temperature
Max. 120 ℃ ( solder surface terminal portion )
Time
Within 120 seconds
2) Manual soldering
260 ±5 ℃
Soldering time
Within 10 seconds
Max. 260 ℃
Max. 350 ℃
Soldering time
Within 10 seconds
Within 3 seconds
Note) Effects of soldering heat on the relays vary depending on the PC
board. So please confirm actual soldering condition with the PC board
used for assembling.
( 2 ) Soldering
Soldering
temperature
Soldering temperature
3) Since this is not a sealed type relay, do not clean it as is.
Also, be careful not to allow flux to overflow above the
PC board or enter the inside of the relay.
● Cautions for usage
• For precautions regarding use and explanations of
technical terminology, please refer to our web site.
• To ensure good operation, please keep the voltage
on the coil ends to ±5 % ( at 20 ℃ ) of the rated coil
voltage. Also, please be aware that the operate voltage
and release voltage may change depending on the
temperature and conditions of use.
• Keep the ripple rate of the rated coil voltage below 5 %.
Please use a varistor to absorb coil surges.
Please note that if a diode is used, contact opening
velocity will become slower and sufficient cutoff
performance cannot be guaranteed.
Recommended Varistor
Maximum energy
Min. 1J
Varistor voltage
150 to 400 % of rated coil voltage
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Panasonic Industry Co., Ltd. 2023
ASCTB326E 202305
High capacity DC cut-off Relays HE-V RELAYS
• The expected life is defined under the standard test
condition specified in the JIS C 5442 standard
( temperature 15 to 35 ℃, humidity 25 to 75 % RH ) .
Check this with the real device as it is affected by coil
driving circuit, load type, activation frequency, ambient
conditions and other factors. Especially, contact
terminals have polarity. So if the contact terminals were
connected with opposite pole, the expected life would
be shorter.
• 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.
• Heat, smoke, and even a fire may occur if the relay is
used in conditions outside of the allowable ranges for
the coil ratings, contact ratings, expected life, and other
specifications. Therefore, do not use the relay if these
ratings are exceeded.
• If a relay is dropped, please do not use it.
• Incorrect wiring may cause unexpected events or the
generation of heat or flames.
• The relay should not be installed near strong magnetic
field ( transformers, magnets, etc. ) and should not be
installed near objects that radiate heat.
• If several relays are mounted close together, please
be careful of the abnormal heating by mutual heat
interference and the insulation distance between the
terminals outside of the relays.
• If you are using an inductive load ( L load ) such that
L/R > 1 ms, add surge protection in parallel with the
inductive load. If this is not done, the electrical life will
decrease and cut-off failure may occur.
• In case using a capacitive load ( C load ) , please take
a countermeasure as pre-charging to the capacitive
load so that the inrush current will not surpass 40 A.
The relay might have a contact welding without such
countermeasure.
• This relay is a high-voltage direct-current switch. In its
final breakdown mode, it may lose the ability to provide
the proper cut-off. Therefore, do not exceed the
indicated switching capacity and life.
( Please treat the relay as a product with limited life and
replace it when necessary. )
In the event that the relay loses cut-off ability, there is
a possibility that burning may spread to surrounding
parts, so configure the layout so that the power is
turned off within one second and from the point of
view of safety, consider installing a failsafe circuit in the
device.
• Please carry out the design which had a enough margin
in conductor width and a space between conductors in
the case of a design of a PC board.
• Take note that contact terminals have polarity. If
they are used for power distribution only, there is no
polarity.
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Panasonic Industry Co., Ltd. 2023
ASCTB326E 202305
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
long periods without relay switching operation. ( circuits
for emergency lamps, alarm devices and error inspection
that, for example, revert only during malfunction and
output warnings with form B contacts ) Continuous, longterm current to the coil will facilitate deterioration of coil
insulation and characteristics due to heating of the coil itself.
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.
When connecting coils of polarized relays, please check coil
polarity ( +, − ) at the internal connection diagram
( Schematic ). If any wrong connection is made, it may
cause unexpected malfunction, like abnormal heat, fire and
so on, and circuit do not work. Avoid impressing voltages to
the set coil and reset coil at the same time.
■ 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.
■ Maximum allowable voltage and temperature
rise
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.
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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
subjected to direct sunlight and maintain normal
temperature, humidity and pressure conditions.
●Temperature/Humidity/Pressure
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
the individual specifications.
Also allowable humidity level is influenced by
temperature, please check charts shown below and
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
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
0
●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.
●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
●Icing
Condensation or other moisture may freeze on relays
when the temperature become lower than 0 ℃.This
icing causes the sticking of movable portion, the
operation delay and the contact conduction failure etc.
Panasonic Industry Co., Ltd. does not guarantee the
failures caused by the icing.
The heat conduction by the equipment may accelerate
the cooling of relay itself and the icing may occur.
Please conduct product evaluations in the worst
condition of the actual usage.
85
Ambient temperature (℃)
3) Pressure: 86 to 106 kPa
●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. )
●Silicon
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.
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Panasonic Industry Co., Ltd. 2023
ASCTB412E 202301
GUIDELINES FOR POWER, HIGH-CAPACITY DC CUT OFF AND SAFETY RELAYS USAGE
Others
■ Cleaning
• Although the environmentally sealed type relay ( plastic
sealed type, etc. ) can be cleaned, avoid immersing
the relay into cold liquid ( such as cleaning solvent )
immediately after soldering. Doing so may deteriorate the
sealing performance.
• Cleaning with the boiling method is recommended ( The
temperature of cleaning liquid should be 40 ℃ or lower ).
Avoid ultrasonic cleaning on relays. Use of ultrasonic
cleaning may cause breaks in the coil or slight sticking of
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/
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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
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Specifications are subject to change without notice.
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2023.5