Load for solar inverter,
Compact size,
1 Form A 22A/33A
power relays
2. Contact gap: 1.5 mm .059 inch and
1.8 mm*** .071 inch
Compliant with European photovoltaic
standard (IEC62109* and VDE0126**).
* Safety standard of PV power inverter
**German safety standard of PV power inverter
***Due to addition of altitude stipulation (2,000 m
6,561.68 ft or more) to IEC62109.
EN61810-1 certified: 2.5 kV surge
breakdown voltage (between contacts)
3. Long insulation distance
Creepage distance between contact and
coil terminal: Min. 9.5 mm .354 inch
Clearance distance between contact and
coil terminal: Min. 6.5 mm .256 inch
Surge breakdown voltage: 6 kV
4. Coil holding voltage contributes to
saving energy of equipment
The coil holding voltage can be reduced
up to 35%V of the nominal coil voltage
(Ambient temperature: 20°C 68°F).
Power consumption at the lowest coil
holding voltage: 170 mW equivalent
RoHS compliant
Protective construction: Flux-resistant
type
FEATURES
1. High capacity
High capacity control possible at 22A/
33A (High capacity type) 250V AC rating
in compact size (L: 15.7 × W: 30.1 ×
H: 23.3 mm L: .618 × W: 1.185 × H: .917
inch)
LF-G RELAYS (ALFG)
*Coil holding voltage is the coil voltage
after 100 ms from the applied nominal
coil voltage.
*When the ambient temperature during
use is 85°C 185°F, make the coil holding
voltage between 45% and 80%V of the
nominal coil voltage.
5. Conforms to various safety
standards
UL/C-UL and VDE approved
TYPICAL APPLICATIONS
1. Photovoltaic power generation
systems (Solar inverter)
2. Uninterruptible Power Supplies
(UPS)
3. Home appliances
4. Office equipment
ORDERING INFORMATION
ALFG
P
F
LF-G relay
Contact arrangement
1: 1 Form A Standard type
2: 1 Form A High capacity type
Terminal shape
P: PCB type
Coil insulation class
F: UL Class F
Nominal coil voltage (DC)
09: 9V, 12: 12V, 18: 18V, 24: 24V
Contact gap
Nil: 1.5 mm .059 inch
1: 1.8 mm .071 inch
Note: Certified by UL/C-UL and VDE
TYPES
Part No.
Contact
arrangement
Nominal coil
voltage
1 Form A
9V DC
12V DC
18V DC
24V DC
Contact Gap 1.5 mm .059 inch type
Standard type
High capacity type
ALFG1PF09
ALFG2PF09
ALFG1PF12
ALFG2PF12
ALFG1PF18
ALFG2PF18
ALFG1PF24
ALFG2PF24
Contact Gap 1.8 mm .071 inch type
Standard type
High capacity type
ALFG1PF091
ALFG2PF091
ALFG1PF121
ALFG2PF121
ALFG1PF181
ALFG2PF181
ALFG1PF241
ALFG2PF241
Standard packing: Carton: 50 pcs.; Case: 200 pcs.
–1–
ASCTB196E 201606-T
LF-G (ALFG)
RATING
1. Coil data
Nominal coil
voltage
Pick-up voltage
(at 20°C 68°F)
(Initial)
Drop-out voltage
(at 20°C 68°F)
(Initial)
70%V or less of
nominal voltage
10%V or more of
nominal voltage
9V DC
12V DC
18V DC
24V DC
Nominal operating
current
[±10%] (at 20°C 68°F)
Coil resistance
[±10%] (at 20°C 68°F)
155mA
58Ω
117mA
78mA
59mA
103Ω
230Ω
410Ω
Nominal operating
power
Max. applied voltage
(at 20°C 68°F)
1,400mW
120%V of
nominal voltage
2. Specifications
Characteristics
Contact
Rating
Electrical
characteristics
Item
Arrangement
Contact resistance (Initial)
Contact material
Nominal switching capacity
Max. switching power
Max. switching voltage
Max. switching current
Nominal operating power
Min. switching capacity
(Reference value)*1
Insulation resistance (Initial)
Between open
contacts
Breakdown
voltage (Initial) Between contact
and coil
Surge breakdown voltage*2
(Between contact and coil) (Initial)
Coil holding voltage*3
Operate time (at 20°C 68°F) (Initial)
Release time (at 20°C 68°F) (Initial)
Mechanical
characteristics
Shock
resistance
Functional
Destructive
Vibration
resistance
Functional
Destructive
Mechanical
Resistive load
Expected life
Electrical
Inductive load
Conditions
Unit weight
Conditions for operation, transport
and storage*4
Specifications
Standard type
High capacity type
Contact Gap 1.5 mm .059 inch type
Contact Gap 1.5 mm .059 inch type Contact Gap 1.8 mm .071 inch type
Contact Gap 1.8 mm .071 inch type
1 Form A
Max. 100 mΩ (By voltage drop 6 V DC 1A)
AgSnO2 type
22A 250V AC
31A 250V AC
33A 250V AC
5,500VA
7,750VA
8,250VA
250V AC
22A (AC)
31A (AC)
33A (AC)
1,400mW
100mA 5V DC
Min. 1,000MΩ (at 500V DC) Measurement at same location as “Breakdown voltage” section.
2,500 Vrms for 1 min. (Detection current: 10 mA)
4,000 Vrms for 1 min. (Detection current: 10 mA)
6,000 V
35 to 120%V (contact carrying
current: 22A, at 20°C 68°F)
45 to 80%V (contact carrying
current: 22A, at 85°C 185°F)
35 to 120%V (contact carrying
current: 31A, at 20°C 68°F)
45 to 80%V (contact carrying
current: 31A, at 85°C 185°F)
35 to 120%V (contact carrying
current: 33A, at 20°C 68°F)
45 to 80%V (contact carrying
current: 33A, at 85°C 185°F)
Max. 20 ms (at nominal coil voltage excluding contact bounce time.)
Max. 10 ms (at nominal coil voltage excluding contact bounce time, without diode)
Min. 100 m/s2 (Half-wave pulse of sine wave: 11 ms; detection time: 10μs.)
Min. 1,000 m/s2 (Half-wave pulse of sine wave: 6 ms.)
10 to 55 Hz at double amplitude of 1.5 mm (Detection time: 10μs.)
10 to 55 Hz at double amplitude of 1.5 mm
Contact Gap 1.5 mm .059 inch type: Min. 106 (at 180 times/min.)
Contact Gap 1.8 mm .071 inch type: Min. 5×105 (at 180 times/min.)
22A 250V AC, Min. 3×104
(at 20 times/min.)
—
—
Destructive: 31A 250V AC
Destructive: 33A 250V AC
Destructive: 22A 250V AC
(cosφ = 0.8),
(cosφ = 0.8),
(cosφ = 0.8),
4
4
Min. 3×10 (on:off = 0.1s:10s)
Min. 3×10 (on:off = 0.1s:10s)
Min. 3×104 (on:off = 0.1s:10s)
Over load: 35A 250V AC
Over load: 47A 250V AC
Over load: 50A 250V AC
(cosφ = 0.8),
(cosφ = 0.8),
(cosφ = 0.8),
Min. 50 (on:off = 0.1s:10s)
Min. 50 (on:off = 0.1s:10s)
Min. 50 (on:off = 0.1s:10s)
Ambient temperature: –40°C to +60°C –40°F to +140°F (When nominal coil voltage applied)
–40°C to +85°C –40°F to +185°F (Coil holding voltage is when 45 to 80%V
of nominal coil voltage is applied.)
Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature)
Air pressure: 86 to 106 kPa
Approx. 23 g .81 oz
Notes: *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 ±1.2×50μs according to JEC-212-1981
*3. Coil holding voltage is the coil voltage after 100 ms from the applied nominal coil voltage.
*4. The upper limit of the ambient temperature is the maximum temperature that can satisfy the coil temperature rise value. Refer to Usage, transport and storage
conditions in NOTES.
–2–
ASCTB196E 201606-T
LF-G (ALFG)
REFERENCE DATA
1. Standard type (Contact Gap 1.5 mm .059 inch type) (Contact Gap 1.8 mm .071 inch type)
1. Coil temperature rise
2. Ambient temperature characteristics and coil
applied voltage
Sample: ALFG1PF09, ALFG1PF091, 6 pcs.
Point measured: coil inside
Ambient temperature: 20°C 68°F, 60°C 140°F
Contact carrying current: 22A
*Inside the coil temperature
155°C 311°F (UL Class F)
Allowable ambient temperatures
against % coil voltages
(max. inside the coil temperature
set as 155°C 311°F)
20°C 68°F 22A
60°C 140°F 22A
80
20°C 68°F 0A
60°C 140°F 0A
60
Coil applied voltage, %V
Temperature rise, °C
100
40
180
140
Contact carrying
current: 22A
100
Pick-up voltage
60
Coil & contact
no carrying current
3. Electrical life test
(22A 250V AC Resistive load)
Contact welding detection
and Mis-contacting
detection circuit
Circuit:
9V DC
10 20 30 40 50 60 70 80 90
50 68 86 104 122 140 158 176 194
Ambient temperature, °C °F
Change of pick-up and drop-out voltage
Sample: ALFG1PF09, ALFG1PF091, 6 pcs.
Operation frequency: ON:OFF = 1.5s:1.5s
Ambient temperature: 85°C 185°F
250V AC
0
0
32
140
10
100
9
90
8
7
6
Pick-up voltage
4
3
Drop-out voltage
2
250V AC
9V DC
Contact welding detection
and Mis-contacting
detection circuit
Circuit:
Max.
x
Min.
1
0
0
80
70
60
50
40
30
20
0
3
100
90
8
7
Pick-up voltage
Max.
x
Min.
5
4
3
Drop-out voltage
Max.
x
Min.
1
0
0
3
No. of operations, ×10
–3–
4
3
Change of contact resistance
9
2
0
No. of operations, ×104
10
6
Max.
x
Min.
10
4
Change of pick-up and drop-out voltage
Pick-up and drop-out voltage, V
Sample: ALFG1PF09, ALFG1PF091, 6 pcs.
Operation frequency: ON:OFF = 0.1s:10s
Ambient temperature: 85°C 185°F
Max.
x
Min.
5
No. of operations, ×10
4. Electrical life test
(22A 250V AC cosφ = 0.8 Inductive load)
Change of contact resistance
Contact resistance, mΩ
100
120
Coil applied voltage, %V
Contact resistance, mΩ
80
Pick-up and drop-out voltage, V
20
60
80
70
60
50
40
30
Max.
20
x
10
0
Min.
0
3
No. of operations, ×104
ASCTB196E 201606-T
LF-G (ALFG)
2. High capacity type (Contact Gap 1.5 mm .059 inch type)
1. Coil temperature rise
2. Ambient temperature characteristics and coil
applied voltage
Sample: ALFG2PF09, 6 pcs.
Point measured: coil inside
Ambient temperature: 20°C 68°F, 60°C 140°F
Contact carrying current: 31A
*Inside the coil temperature
155°C 311°F (UL Class F)
Allowable ambient temperatures
against % coil voltages
(max. inside the coil temperature
set as 155°C 311°F)
20°C 68°F 31A
60°C 140°F 31A
80
20°C 68°F 0A
60°C 140°F 0A
60
Coil applied voltage, %V
Temperature rise, °C
100
40
180
140
Contact carrying
current: 31A
100
Pick-up voltage
60
Coil & contact
no carrying current
100
120
Coil applied voltage, %V
0
0
32
140
3. Electrical life test
(31A 250V AC cosφ = 0.8 Inductive load)
Sample: ALFG2PF09, 6 pcs.
Operation frequency: ON:OFF = 0.1s:10s
Ambient temperature: 85°C 185°F
Contact welding detection
and Mis-contacting
detection circuit
Circuit:
250V AC
9V DC
10 20 30 40 50 60 70 80 90
50 68 86 104 122 140 158 176 194
Ambient temperature, °C °F
Change of pick-up and drop-out voltage
Change of contact resistance
10
100
9
90
8
7
Pick-up voltage
6
Max.
x
5
Min.
4
3
Drop-out voltage
Contact resistance, mΩ
80
Pick-up and drop-out voltage, V
20
60
Max.
x
Min.
2
70
60
50
40
30
Max.
20
1
0
80
x
10
0
0
3
No. of operations, ×10
Min.
0
3
No. of operations, ×10
4
4
3. High capacity type (Contact Gap 1.8 mm .071 inch type)
1. Coil temperature rise
2. Ambient temperature characteristics and coil
applied voltage
Sample: ALFG2PF091, 6 pcs.
Point measured: coil inside
Ambient temperature: 20°C 68°F, 60°C 140°F
Contact carrying current: 33A
20°C 68°F 33A
100
212
60°C 140°F 33A
80
176
20°C 68°F 0A
60°C 140°F 0A
60
140
Coil applied voltage, %V
40
104
140
Contact carrying
100 current: 33A
Pick-up voltage
60
Coil & contact
no carrying current
80
100
120
Coil applied voltage, %V
140
3. Electrical life test
(33A 250V AC cosφ = 0.8 Inductive load)
Sample: ALFG2PF091, 6 pcs.
Operation frequency: ON:OFF = 0.1s:10s
Ambient temperature: 85°C 185°F
250V AC
9V DC
Contact welding detection
and Mis-contacting
detection circuit
Circuit:
0
32
10 20 30 40 50 60 70 80 90
50 68 86 104 122 140 158 176 194
Ambient temperature, °C °F
Change of pick-up and drop-out voltage
Pick-up and drop-out voltage, V
20
68
60
*Inside the coil temperature
155°C 311°F (UL Class F)
Allowable ambient temperatures
against % coil voltages
(max. inside the coil temperature
set as 155°C 311°F)
180
Change of contact resistance
10
100
9
90
8
7
Pick-up voltage
6
Max.
x
Min.
5
4
3
Max.
x
Min.
Drop-out voltage
2
80
70
60
50
40
30
20
Max.
x
Min.
10
1
0
Contact resistance, mΩ
Temperature rise, °C °F
120
248
0
3
No. of operations, ×104
–4–
0
0
3
No. of operations, ×104
ASCTB196E 201606-T
LF-G (ALFG)
DIMENSIONS (mm inch)
The CAD data of the products with a
CAD Data
mark can be downloaded from: http://industrial.panasonic.com/ac/e/
External dimensions
CAD Data
PC board pattern (Bottom view)
27.6±0.1
1.087±.004
0.5
.020
2.
.0 0 d
79 ia
dia .
.
23.3
.917
13.8±0.1
.543±.004
a.
di ia.
0 d
2. 79
.0
12.0±0.1
.472±.004
0.8
.031
1.6
.063
22.0
.866
27.6
1.087
1.6
.063
0.8
.031
1.6
.063
12.0
.472
0.3
.012
1
.0 .8 d
71 ia
di .
a.
10.0±0.1
.394±.004
a.
di .
8 ia
1. 1 d
7
.0
12.0±0.1
.472±.004
4.0
.157
30.1
1.185
Tolerance: ±0.1 ±.004
Schematic (Bottom view)
15.7
.618
NO
Dimension:
Less than 1mm .039inch:
Min. 1mm .039inch less than 3mm .118 inch:
Min. 3mm .118 inch:
COM
General tolerance
±0.1 ±.004
±0.2 ±.008
±0.3 ±.012
SAFETY STANDARDS
Item
UL/C-UL (Recognized)
Contact rating
File No.
Standard type
(Contact GAP 1.5 mm/1.8 mm
.059 inch/.071 inch)
E43028
High capacity
type
1.5 mm .059 inch
E43028
1.8 mm .071 inch
E43028
Temp.
Cycles
22A 277V AC General Use
22A 277V AC Resistive
22A 30V DC Resistive
31A 277V AC General Use
85°C 185°F
85°C 185°F
40°C 104°F
85°C 185°F
3 × 104
3 × 104
3 × 104
3 × 104
33A 277V AC General Use
33A 30V DC Resistive
85°C 185°F
40°C 104°F
3 × 104
3 × 104
File No.
40023067
—
—
40023067
VDE (VDE0435) (Certified)
Contact rating
Temp.
22A 250V AC (cosφ =0.8)
85°C 185°F
—
—
—
—
31A 250V AC (cosφ =0.8)
85°C 185°F
Cycles
3 × 104
—
—
3 × 104
40023067
33A 250V AC (cosφ =0.8)
3 × 104
85°C 185°F
EN/IEC VDE Certified
INSULATION CHARACTERISTIC (IEC61810-1)
Item
Clearance/Creepage distance (IEC61810-1)
Category of protection (IEC61810-1)
Tracking resistance (IEC60112)
Insulation material group
Over voltage category
Rated voltage
Pollution degree
Type of insulation (Between contact and coil)
Type of insulation (Between open contacts)
Characteristic
Min. 5.5mm/5.5mm
RT II
PTI 175
III a
III
250V
2
Reinforced insulation
Full disconnection
–5–
ASCTB196E 201606-T
LF-G (ALFG)
NOTES
1. For cautions for use, please read
“GENERAL APPLICATION
GUIDELINES”.
2. Usage, transport and storage
conditions
1) Temperature:
–40 to +60°C –40 to +140°F (When
nominal coil voltage applied)
–40 to +85°C –40 to +185°F (When coil
holding voltage is 45% to 80% of the
nominal coil voltage)
2) Humidity: 5 to 85% RH
(Avoid freezing and condensation.)
The humidity range varies with the
temperature. Use within the range
indicated in the graph below.
3) Atmospheric pressure: 86 to 106 kPa
Temperature and humidity range for
usage, transport, and storage
Humidity, %RH
Humidity, %RH
85
85
Tolerance range
(Avoid freezing
when used at
temperatures lower
than 0°C 32°F)
5
–40
–40
(Avoid
condensation
when used at
temperatures
higher than
0°C 32°F)
0
60
+32
+140
Temperature, °C °F
Tolerance range
(Avoid freezing
when used at
temperatures
lower than
0°C 32°F)
5
–40
–40
(Avoid
condensation
when used at
temperatures
higher than
0°C 32°F)
0
+32
Temperature, °C °F
85
+185
∗ –40 to +85°C –40 to +185°F (When 45% to
80%V of coil holding voltage)
–6–
ASCTB196E 201606-T
