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Product Details Portlet
G4A PCB Power Relay
Miniature Single-pole Relay with 80A Surge Current and 20A Switching Current
- Capable of Switching Motor Load of 80-A Surge Current and 20A Switching/Cut-off Current
- Miniature, relay with high switching power and long endurance.
- Creepage distance conforms to UL and CSA standards.
- Highly noise-resistive insulation materials employed.
- Standard model available with flux protection construction.
RoHS Compliant
Datasheet
Note: This web page provides an excerpt from a datasheet. Refer to Product Datasheet and other applicable documents for more information.
Quick-connect/PCB coil terminals
PCB terminals
packing unit | |||||
|---|---|---|---|---|---|
| SPST-NO(1a) | #250 quick-connect terminals | PCB terminals | G4A-1A-E | 12, 24 VDC | 50 pcs/tray |
packing unit | |||||
|---|---|---|---|---|---|
| SPST-NO(1a) | PCB terminals | PCB terminals | G4A-1A-PE | 12, 24 VDC | 50 pcs/tray |
| Note: | When ordering, add the rated coil voltage to the model number. |
| However, the notation of the coil voltage on the product case as well as on the packing will be marked as □□ VDC. |
Coil Ratings
Contact Ratings
Motor Ratings
Inverter Ratings
Overload Durability (Reference Value)
Characteristics
| Rated voltage | 12 VDC | 24 VDC | |
|---|---|---|---|
| Rated current | 75 mA | 37.5 mA | |
| Coil resistance | 160 Ω | 640 Ω | |
| Must operate voltage | 70% of rated voltage max. | ||
| Must release voltage | 10% of rated voltage min. | ||
| Max. permissible voltage | 160% of rated voltage at (23ºC) | ||
| Power consumption | Approx. 0.9 W | ||
| Note: | 1. | The rated current and coil resistance are measured at a coil temperature of 23ºC with a tolerance of ±10%. |
| 2. | The inductances shown above are reference values. | |
| 3. | Operating characteristics are measured at a coil temperature of 23ºC. | |
| 4. | Max. permissible voltage refers to the maximum value in a varying range of operating power voltage, not a continuous voltage. |
Contact Ratings
| Contact type | Single |
|---|---|
| Contact material | Ag-Alloy (Cd free) |
| Rated carry current | 20 A |
| Max. switching voltage | 250 VAC |
| Max. switching current | 20 A |
Motor Ratings
| 250 VAC: Inrush current: 80 A, 0.3 s (cosφ= 0.7) Break current: 20 A (cosφ = 0.9) | ON: 1.5 s OFF:1.5 s | 200,000 operations |
Inverter Ratings
| 100 VAC: Inrush current: 200 A (0-P) Break current: 20 A | ON: 3 s OFF:5 s | 30,000 operations |
Overload Durability (Reference Value)
| 250 VAC: Inrush current: 80 A (cosφ= 0.7) Break current: 80 A (cosφ = 0.7) | ON: 1.5 s OFF:99 s | 1,500 operations |
Characteristics
| Contact resistance *1 | 100 mΩ max. | |
|---|---|---|
| Operate time | 20 ms max. | |
| Release time | 10 ms max. | |
| Max. operating frequency | Mechanical | 18,000 operations/hr |
| Insulation resistance *2 | 1,000 MΩ min. (at 500 VDC) | |
| Dielectric strength | Between coil and contacts | 4,500 VAC 50/60 Hz for 1 min |
| Between contacts of the same polarity | 1,000 VAC 50/60 Hz for 1 min | |
| Impulse withstand voltage | Between coil and contacts | 8.5 kV 1.2 x 50 |
| Vibration resistance | Destruction | 10 to 55 to 10 Hz, 0.75 mm single amplitude (1.5 mm double amplitude) |
| Malfunction | 10 to 55 to 10 Hz, 0.75 mm single amplitude (1.5 mm double amplitude) | |
| Shock resistance | Destruction | 1,000 m/s2 |
| Malfunction | 200 m/s2 | |
| Durability | Mechanical | 2,000,000 operations min. (at 18,000 operations/hr) |
| Motor load | 200,000 operations min. (ON/OFF: 1.5 s) | |
| Inverter load | 30,000 operations min. (ON: 3 s, OFF: 5 s) | |
| Failure rate (P level) (reference value) *3 | 100 mA at 5 VDC | |
| Ambient operating temperature | Operating: -20ºC to 60ºC (with no icing or condensation) | |
| Ambient operating humidity | Operating: 5% to 85% | |
| Weight | Approx. 23 g | |
| NOTE: | The values here are initial values. | |
| 1. | Measurement conditions: 5 VDC, 1 A, voltage drop method. | |
| 2. | Measurement conditions: The insulation resistance was measured with a 500 VDC megohmmeter at the same locations as the dielectric strength was measured. | |
| 3. | This value was measured at a switching frequency of 120 operations/min. |
| #250 quick-connect/PCB coil terminals G4A-1A-E | |
| Mounting Holes (BOTTOM VIEW) | |
| Terminal Arrangement / Internal Connections (Top View) (Bottom View) | |
| Straight PCB/PCB coil terminals G4A-1A-PE | |
| PCB Mounting Holes (BOTTOM VIEW) | |
| Terminal Arrangement / Internal Connections (BOTTOM VIEW) | |
Correct Use
●Mounting
When mounting two or more relays side by side, provide a minimum space of 3 mm between relays.
●Terminals
The terminals fit FASTON receptacle 250 and are suitable for positive-lock mounting.
Use only Faston terminals with the specified numbers.
Select leads for connecting Faston receptacles with wire diameters that are within the allowable range for the load current.
Do not apply excessive force to the terminals when mounting or dismounting the Faston receptacle.
Insert and remove terminals carefully one at a time. Do not insert terminals at an angle, or insert/remove multiple terminals at the same time.
Refer to the following table for recommendations of connectors made by OMRON.
●Other Precautions
This Relay is suitable for power load switching of air-conditioning compressors and power supplies, etc. Do not use the G4A to switch micro loads less than 100 mA, such as in signal applications.
