Name: Omron G3NA-450B-UTU-2 DC5-24 Solid State Relay - INOSAKI
SKU: Omron-G3NA-450B-UTU-2 DC5-24
Price: 109.27 USD
Availability: InStock

Technical Overview

The Omron G3NA-450B-UTU-2 DC5-24 is a hockey-puck style solid state relay (SSR) designed to efficiently control electrical AC loads in automated industrial systems. It features a high load current capacity of 50A and an output voltage range of 200 to 480 VAC. The relay incorporates photocoupler isolation, zero-cross switching to reduce electrical noise, and a built-in varistor for surge absorption. Packaged in a compact screw-mount chassis with a protective cover, it ensures dependable operation and is certified by UL, CSA, and TÜV.

Key Features

Control Input Voltage: 5 to 24 VDC [1.2]
Load Current Capacity: 50A (up to 480 VAC)
Zero-cross AC load switching for electrical noise reduction
Photocoupler isolation between input and output
Built-in varistor effectively absorbs external electrical surges
Compact 30x43x58mm chassis/panel mount footprint
Screw terminal connections with protective safety cover
LED operation indicator for easy visual monitoring
TÜV, UL, and cURus/CSA safety certifications
RoHS compliant construction

Technical Specification Matrix

Parameter	Value
Control Voltage Range	4 to 32 VDC (5-24 VDC nominal) [1.5]
Load Voltage Range	180 to 528 VAC (200-480 VAC nominal)
Rated Load Current	50 A (at 40°C ambient)
Output ON Voltage Drop	1.8 V (RMS) max.
Isolation	Photocoupler isolation
Switching Mode	Zero Cross
Operating Temperature	-30°C to +80°C
Termination	Screw Terminal
Mounting	Chassis Mount / DIN Rail Mount compatible
Dimensions	30 x 43 x 58 mm

Industrial Applications

1. Industrial Extrusion Heater Control

Precise PID temperature regulation in plastic extrusion machines and industrial furnaces requiring frequent, high-power heating element cycling [1.3].

Problem Solved

Traditional electromechanical relays suffer from rapid mechanical wear under high-frequency switching. This solid state relay provides limitless contact-less switching of 50A, 480VAC heater loads, while zero-cross functionality minimizes EMI/RFI noise.

Zero-cross switching50A load current480VAC heater controlSolid state relayPID temperature regulation

2. Large AC Pump and Blower Control

Automated on/off control for high-power industrial blowers or fluid transfer pumps operating on high-voltage AC mains.

Problem Solved

Inrush currents from large AC motors can overload contacts and damage downstream control electronics. The SSR's zero-cross feature ensures activation at 0V, reducing inrush stress, while the integrated varistor reliably absorbs dangerous back-EMF surges.

AC motor controlInrush current mitigationSurge absorption varistor200-480 VAC switchingPhotocoupler isolation

3. Facility High-Intensity Lighting Automation

Switching large banks of high-intensity discharge (HID) or LED industrial facility lighting using central PLC control logic.

Problem Solved

Simultaneous activation of extensive lighting arrays causes significant transient voltage spikes. By utilizing a 5-24 VDC PLC output to control the SSR, facility managers gain safe automation. Zero-cross switching mitigates the initial current spike typical of capacitive lighting loads.

Lighting control panelPLC integration5-24 VDC controlTransient suppressionZero-cross AC load switching