Omron G3PA-420B-VD Solid-state Relay
Omron G3PA-420B-VD is a single-phase, 2-element solid state relay with photocoupler isolation and a 12 to 24 VDC rated input. Its input operating range is 9.6 to 30 VDC. The rated output load voltage is 200 to 400 VAC, while the output load voltage range extends from 180 to 440 VAC. Output load current is listed as 20 A at 25°C and 0.5 to 20 A at 40°C. The relay supports DIN track or screw mounting, uses detachable screwless clamp terminals, and includes a yellow operating indicator and zero-cross function. Output inrush current resistivity is 220 A for one 60 Hz cycle. The G3PA-420B-VD belongs to the G3PA series under the Solid state relay category from Omron switching products.

| Brand | Omron |
| Product | Solid State Relay |
| Model Number | G3PA-420B-VD |
Omron G3PA-420B-VD Solid-state Relay - Technical Specifications
| Specification | Value |
|---|---|
| Number Of Phases | Single-phase |
| Isolation Method | Photocoupler |
| Mounting | DIN track mounting,Screw mounting |
| Operating Indicator | Equipped (Yellow) |
| Terminal Structure | Screwless clamp terminals (detachable) |
| Product Classification | For Single-phase Heater |
| Number Of Elements | 2 |
| Zero Cross Function | Equipped |
| Input Rated Voltage | 12 to 24 VDC |
| Input Current | 7 mA max. (at 12 VDC) |
| Input Operate Voltage | 4 VDC max. |
| Input Release Voltage | 1 VDC min. |
| Output Rated Load Voltage | 200 to 400 VAC |
| Output Load Voltage Range | 180 to 440 VAC |
| Output Minimum Load Current | 0.5 to 20 A at 40°C |
| Output Load Current | 20 A (at 25 ℃) |
| Output Inrush Current Resistivity | 220 A (60 Hz 1 cycle) |
| Operate Time | 1/2 cycle of load power source + 1 ms max. |
| Release Time | 1/2 cycle of load power source + 1 ms max. |
| Output On Voltage Drop | Main circuit: 1.6 V max. (RMS) Alarm output: 1.8 V max. |
| Leakage Current | Main circuit: 10 mA max. (at 200 VAC) Alarm output: 20 mA max. |
| Insulation Resistance | 100 MΩ min. (at 500 VDC) |
| Dielectric Strength | 4000 VAC 50/60 Hz 1 min |
| Vibration Resistance | 10 to 55 to 10 Hz, 0.175 mm single amplitude (0.75 mm double amplitude) |
| Shock Resistance | 294 m/s 2 (DIN Track mounting) |
| Ambient Temperature Operating | -30 to 80 ℃ (with no freezing or condensation) |
| Ambient Temperature Storage | -30 to 100 ℃ (with no freezing or condensation) |
| Ambient Humidity Operating | 45 to 85% RH |
| Weight | Approx. 260 g |
The Omron G3PA-420B-VD Solid State Relay has a single-phase, 2-element configuration with photocoupler isolation and supports DIN track or screw mounting. The terminal structure uses detachable screwless clamp terminals. Its rated input voltage is 12 to 24 VDC with a 9.6 to 30 VDC input operating range. Input current is 7 mA max. at 12 VDC, input operate voltage is 4 VDC max., and input release voltage is 1 VDC min. The rated output load voltage is 200 to 400 VAC, while the load voltage range is 180 to 440 VAC. Output load current is specified as 20 A at 25°C and 0.5 to 20 A at 40°C. Output inrush current resistivity is 220 A for one 60 Hz cycle.
The relay includes a yellow operating indicator and equipped zero-cross function. Operate time and release time are each one-half cycle of the load power source plus 1 ms max. Main-circuit output ON voltage drop is 1.6 V max. RMS. Insulation resistance is 100 MΩ min. at 500 VDC and dielectric strength is 4000 VAC at 50/60 Hz for 1 minute. Ambient operating temperature is -30 to 80°C without freezing or condensation. The related G3PA-430B-VD has the same listed output voltage, load-current, and inrush-current specifications, with a different input operate voltage.


