G3NA-420B
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Overview of Omron G3NA-420B
The Omron G3NA-420B is a general-purpose AC solid state relay designed for switching resistive loads. It supports load voltages from 180 to 528 VAC and a load current up to 20 A at 40°C ambient temperature. This relay features zero-cross switching to reduce electrical noise and prolong device longevity, suitable for heater and motor control applications.
Key Features of Omron G3NA-420B
- Load voltage range: 180 to 528 VAC
- Load current: 0.2 to 20 A at 40°C
- Input control voltage: Typically 4 to 32 VDC
- Zero cross switching function for reduced electrical noise
- Equipped with LED operation indicator
- Insulation voltage: 4000 VAC for 1 minute
- Compact size for space-saving installations
- Operating temperature: -30°C to 80°C (no condensation or freezing)
- Screw terminal connections for reliable wiring
- Protection: Built-in varistor for surge absorption
Technical Specifications
| Model Number | G3NA-420B |
| Load Voltage | 180 to 528 VAC |
| Load Current | 0.2 to 20 A (at 40°C) |
| Input Control Voltage | 4 to 32 VDC |
| Operation Indicator | LED |
| Zero Cross Function | Yes |
| Insulation Voltage | 4000 VAC (1 min) |
| Operating Temperature | -30 to 80 °C |
| Connection Type | Screw terminal |
| Protection | Varistor (surge absorption) |
Applications / Use Case
The G3NA-420B is ideal for resistive load switching in industrial environments, particularly for heater control, motor control, and lighting applications. Its zero-cross switching helps to minimize electrical noise and extend the life of both the relay and the connected load.
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