Name: Omron G3PE-545B DC12-24V Solid State Relay - INOSAKI
SKU: Omron-G3PE-545B DC12-24V
Price: 87.81 USD
Availability: InStock

Technical Overview

The Omron G3PE-545B DC12-24V is a high-performance, single-phase solid-state relay designed for demanding industrial applications, particularly for heater control. It features an integrated heat sink in a compact, slim profile, allowing for either DIN rail or screw mounting. This SSR incorporates a phototriac coupler for reliable insulation and features a zero-cross function for minimizing noise and inrush current. It is engineered to handle a significant load current of up to 45A and a load voltage range of 200 to 480 VAC, making it suitable for controlling powerful heating elements and other resistive loads. The relay is controlled by a low-voltage DC input (12-24V) and includes an operation indicator for visual status confirmation. It conforms to major international standards, including UL, CSA, and EN (TÜV certified).

Key Features

Equipped with a zero-cross function to minimize inrush current.
Handles a high load current of 45A at 200 to 480 VAC.
Compact, slim-profile design with an integrated heat sink.
Can be mounted on a DIN rail or with screws for flexible installation.
Features a yellow operation indicator for easy status monitoring.
Low DC input voltage range of 12 to 24V.
Conforms to UL, CSA, and EN standards (TÜV certified).

Technical Specification Matrix

Parameter	Value
Relay Type	Solid State Relay
Mounting Type	DIN Rail, Screw Mount
Circuit	SPST-NO (1 Form A)
Output Type	AC, Zero Cross
Control Voltage	12 ~ 24VDC
Operating Voltage Range (Input)	9.6 to 30 VDC
Load Voltage	200 ~ 480 VAC
Load Current	45 A
Termination Style	Screw Terminal
Operating Temperature	-30°C ~ 80°C
Storage Temperature	-30°C ~ 100°C
Insulation Resistance	100 MΩ min. (at 500 VDC)
Dielectric Strength	2,500 VAC, 50/60 Hz for 1 min

Industrial Applications

1. Industrial Furnace Temperature Regulation

This SSR can be used to precisely control the large heating elements in an industrial furnace or oven. The high 45A current rating is sufficient for large resistive loads, and the 12-24VDC input allows for easy integration with standard PLC temperature control modules.

Problem Solved

Provides reliable, arc-free switching of high-power heating elements, leading to more stable temperature control and longer heater life compared to mechanical contactors. The zero-cross function minimizes electrical noise and reduces stress on the power supply.

Temperature ControlResistive HeatingPLC Integration45A Load CurrentZero-Cross Switching

2. Plastics Extrusion Barrel Heating Control

In a plastics extrusion machine, maintaining precise temperatures along the barrel is critical. This SSR can switch the multiple heater bands on and off rapidly to maintain the exact temperature profile needed for the specific polymer being processed.

Problem Solved

The SSR's solid-state design allows for the high-frequency switching required for PID temperature control, which is difficult for mechanical relays to achieve. Its 480V load capacity is ideal for typical three-phase industrial power systems used in these machines.

Plastics ExtrusionPID ControlHeater Bands480 VACSolid State Relay

3. Large-Scale HVAC Duct Heater Control

Used within a large commercial or industrial HVAC system to control high-power electric duct heaters. The SSR is driven by a building automation system (BAS) to modulate the heat output based on zone temperature demands.

Problem Solved

Offers silent operation, a major benefit over noisy mechanical contactors in commercial buildings. The long operational life of the SSR reduces maintenance costs, and its ability to handle up to 45A allows for the control of substantial heating loads with a single component.

HVACDuct HeaterBuilding Automation System45ASilent Operation