Omron G3PA-220B-VD-X DC5-24V — 20 A Solid State Relay
SKU: G3PA-220B-VD-X DC5-24VUSD 26.00
Controls resistive AC heaters from a PLC or temperature controller, with zero-cross switching and an integrated heatsink.
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Product Overview
The Omron G3PA-220B-VD-X DC5-24V is a 20 A solid state relay for ON/OFF control of electric heaters and other resistive AC loads. It accepts a low-voltage DC signal from a PLC or temperature controller and switches loads operating from 24 to 240 VAC. Its integrated heatsink simplifies panel installation by removing the need to select and mount a separate heatsink.
Built for industrial heater control
This Omron solid state relay is suited to applications that switch heating elements repeatedly during production. Typical uses include heater bands on plastic-processing machines, heat-seal jaws in packaging equipment, and temperature control in industrial ovens.
The zero-cross function switches the load near the AC waveform's natural zero point. This provides smoother ON/OFF control for resistive heaters and can reduce switching noise. An input-status LED also helps technicians confirm that the relay is receiving a control signal during commissioning or troubleshooting.
Choosing the right G3PA variant
Choose the G3PA-220B-VD-X when the application needs a 5 to 24 VDC control input, a 24 to 240 VAC load range, and up to 20 A of switching capacity. Screw terminals and DIN-rail or panel mounting make it practical for new control panels and replacement work.
The closest alternative is the G3PA-220BL-VD-X, which does not include zero-cross switching. Select that version only when the load and control method require non-zero-cross operation. For lower-current heater circuits, the G3PA-210B-VD-X is the 10 A option in the same family.
What to confirm before ordering
Check the heater's voltage, current, and load type before selecting this relay. The 20 A rating is not available under every cabinet condition: high ambient temperatures and close side-by-side mounting can require current derating. The enclosure must also provide suitable airflow around the integrated heatsink.
Confirm that the controller provides a compatible DC voltage output and enough current to operate the relay. This model uses the replaceable G32A-A20-VD power element, which may also be relevant when maintaining an existing G3PA installation.
Finally, verify the complete suffix and required approvals. The -VD designation identifies the listed UL, CSA, and VDE certifications, while the -X version does not carry a CE mark. If CE compliance is required for the destination market, confirm a suitable alternative before ordering.
Key Features
- 20 A solid state relay for 24 to 240 VAC resistive loads
- 5 to 24 VDC rated control input
- Zero-cross switching for ON/OFF heater control
- Integrated heatsink for compact panel installation
- 35 mm DIN-rail or panel mounting
- Screw terminals and input-status LED
- Replaceable G32A-A20-VD power element
- UL, CSA, and VDE certified; -X version has no CE mark
- SKU: G3PA-220B-VD-X DC5-24V
- Series: Omron G3PA
- Voltage: 24 TO 240 VAC
- I/O: 5 I/O
Best-Fit Applications
- Heater-band switching on plastic-processing equipment
- Heat-seal temperature control in packaging machines
- Heating-element control in food-processing ovens
- Infrared heater switching in drying and curing systems
Buying Checklist
- Confirm the resistive AC load operates within 24 to 240 VAC and does not exceed 20 A.
- Verify that the PLC or temperature controller provides a compatible DC voltage output.
- Choose the G3PA-220BL-VD-X only when the application requires non-zero-cross switching.
- Allow for current derating in hot enclosures or closely spaced multi-relay installations.
- Check whether the destination market requires CE marking; this -X version has no CE mark.
- Verify whether the replaceable G32A-A20-VD power element is required for maintenance stock.
Technical Specifications
| Model | G3PA-220B-VD-X DC5-24V |
|---|---|
| Series | Omron G3PA |
| Product Type | Solid state relay with integrated heatsink |
| Rated Load Voltage | 24 to 240 VAC |
| Rated Load Current | 20 A |
| Rated Input Voltage | 5 to 24 VDC |
| Input Operating Range | 4 to 30 VDC |
| Input Current | 7 mA max. |
| Switching Function | Zero-cross |
| Isolation | Phototriac; 4,000 VAC dielectric strength |
| Terminal Type | M3.5 screw terminals |
| Mounting | 35 mm DIN rail or panel mount |
| Replaceable Power Element | G32A-A20-VD |
| Operating Temperature | -30 to 80 °C (derating may apply) |
| Dimensions | Approx. 50 × 90 × 100 mm |
| Certifications | UL, CSA, VDE; no CE mark on -X version |
Resources & Downloads
FAQ for G3PA-220B-VD-X DC5-24V
What is the G3PA-220B-VD-X used for?
The G3PA-220B-VD-X is used for ON/OFF control of resistive AC heaters. Common applications include heater bands, packaging-machine heat-seal jaws, industrial ovens, and drying equipment controlled by a PLC or temperature controller.
Can the G3PA-220B-VD-X be driven by a temperature controller?
Yes, when the temperature controller provides a compatible DC voltage output. The relay has a 5 to 24 VDC rated input and draws up to 7 mA. Confirm the controller output voltage, available current, and polarity before connection.
Does the G3PA-220B-VD-X need a separate heatsink?
No. The heatsink is integrated into the G3PA housing, and the relay can be mounted on a 35 mm DIN rail or directly to a panel. Cabinet temperature, airflow, and spacing still matter because current derating may apply.
What is the difference between G3PA-220B-VD-X and G3PA-220BL-VD-X?
The G3PA-220B-VD-X includes zero-cross switching for ON/OFF control of resistive heaters. The G3PA-220BL-VD-X is the corresponding non-zero-cross model. Choose between them according to the load and the required control method.
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