Product Description

The Omron G3NA-420B is a solid-state relay (SSR) designed for controlling single-phase heaters in industrial applications. It features a compact "hockey-puck" design with screw terminals for easy installation. The relay offers a rated input voltage of 5 to 24 VDC and a rated load voltage range of 200 to 480 VAC. It supports load currents up to 20 A with a heat sink (at 40°C) and up to 4 A without a heat sink. The G3NA-420B is equipped with zero-crossing functionality to reduce inrush currents and features an operating indicator for monitoring. It also includes a built-in varistor to effectively absorb external surges, enhancing durability. This model is certified by UL, CSA, and EN (TÜV). Please note that the G3NA-420B has been discontinued and is no longer manufactured.

Technical Specifications

• Product Classification: Solid-state relay for single-phase heater control​
• Input:
• Rated Voltage: 5 to 24 VDC​
• Omron Automation
• +3
• Omron
• +3
• Omron
• +3
• Operating Voltage Range: 4 to 32 VDC​
• Input Current: 5 mA maximum​
• BaoAnJSC
• +2
• Omron
• +2
• Omron
• +2
• Operate Voltage: 4 VDC maximum​
• Release Voltage: 1 VDC minimum​
• Output:
• Rated Load Voltage: 200 to 480 VAC​
• Omron
• +1
• BaoAnJSC
• +1
• Load Voltage Range: 180 to 528 VAC​
• Omron Automation
• +5
• Omron
• +5
• Omron
• +5
• Load Current:
• With Heat Sink (at 40°C): 0.2 to 20 A
• Without Heat Sink (at 40°C): 0.2 to 4 A
• Inrush Current Resistance: 220 A (60 Hz, 1 cycle)​
• Omron
• +1
• Omron
• +1
• Performance:
• Operate Time: 1/2 cycle of load power source + 1 ms maximum​
• Omron
• +1
• Omron
• +1
• Release Time: 1/2 cycle of load power source + 1 ms maximum​
• Omron
• Output ON Voltage Drop: 1.8 V maximum (RMS)​
• Omron Automation
• +2
• Omron
• +2
• Omron
• +2
• Leakage Current: 10 mA maximum (at 200 VAC)​
• Omron
• +1
• Omron
• +1
• Insulation Resistance: 100 MΩ minimum (at 500 VDC)​
• Omron
• +1
• Omron
• +1
• Dielectric Strength: 4,000 VAC, 50/60 Hz for 1 minute​
• Omron
• +1
• Omron
• +1
• Vibration Resistance: 10 to 55 to 10 Hz, 0.75 mm single amplitude​
• Omron
• +1
• Omron
• +1
• Shock Resistance: 1,000 m/s²​
• DigiKey
• +2
• Omron
• +2
• Omron
• +2
• Ambient Temperature:
• Operating: -30 to 80°C (with no freezing or condensation)​
• Omron
• +1
• DigiKey
• +1
• Storage: -30 to 100°C (with no freezing or condensation)​
• Omron
• Ambient Humidity: 45% to 85%​
• Weight: Approximately 80 g​
• BaoAnJSC
• +2
• Omron
• +2
• Omron
• +2
• Certifications: UL, CSA, EN (TÜV)