Omron G3NB-225B-1 Solid State Relay 25A Compact
SKU: G3NB-225B-1USD 8.00
Omron G3NB-225B-1 is a compact 25A solid state relay for medium-power AC load switching in space-constrained panels.
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Product Overview
Omron G3NB-225B-1 is supplied for industrial automation projects requiring reliable delivery, verified authenticity, and responsive support from inquiry to shipment.
- SKU: G3NB-225B-1
- Series: G3NB
- Voltage: 240V
- I/O: 5 I/O
Best-Fit Applications
- Supports repetitive load cycling without contact wear
- Helps maintain stable thermal response
- Enables quieter panel operation than mechanical relays
Buying Checklist
- 25A-class switching capacity for mid-power loads
- Zero-cross operation for cleaner switching events
- Long-life solid-state operation
- Suitable for process control panel standards
Technical Specifications
| Model | G3NB-225B-1 |
|---|---|
| Series | G3NB |
| Type | Compact Solid State Relay |
| Load Current | 25A |
| Load Voltage | AC200-240V |
| Control Input | DC5-24V |
| Switching Method | Zero-cross |
| Mounting | Panel mount |
| Heat Sink | Required |
| Operating Temperature | -30 to +80°C |
| LED Indicator | Input ON indicator |
Resources & Downloads
FAQ for G3NB-225B-1
What heat sink do I need?
For 25A load, use substantial heat sink. Calculate power dissipation: 1.6V × 25A = 40W. Ensure heat sink can dissipate 40W at your ambient temperature.
Can I use this for motor control?
Yes, for motors under 25A full-load current. Add varistor across output for inductive load protection. Consider motor inrush current (6× FLC) during start.
What's the advantage of compact SSR?
Smaller than traditional SSRs, saves panel space. Cost-effective for medium-power applications. Zero-cross switching reduces EMI.
Do I need external fuse?
Yes, external fuse recommended for branch circuit protection. Size at 125-150% of load current. SSR has internal protection but external fuse provides disconnect capability.
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