Omron G3NA-205B-UTU 5-24VDC Single Phase SSR: Technical Guide, Applications and Installation
Maintenance teams know the difference between components that merely survive and ones that genuinely perform over the long haul. The Omron G3NA-205B-UTU 5-24VDC Single Phase SSR— 24V DC rated — falls firmly in the second category, making it a frequent first choice for single-phase heaters environments.
Many engineers working with this product also specify Omron Omron Sensor solutions on the same project. The shared ecosystem means signal levels, cable standards, and mounting accessories align across product families — a practical advantage that saves time during panel design and commissioning.
Omron G3NA-205B-UTU 5-24VDC — Product Profile
The Omron G3NA-205B-UTU 5-24VDC is a Single Phase SSR rated at 24V DC, built to handle single-phase heaters reliably over a long service life. Key engineering features include zero-cross switching, optical isolation 4000 v, broad control input, and the unit mounts via heatsink or panel.
On the bench, zero-cross switching, optical isolation 4000 v, broad control input stands out immediately. The 24V DC rating align with the control voltage standards used across manufacturing, building automation, and process control industries, reducing the need for additional conversion stages.
Technical Data Summary
The table below summarises the main technical parameters of the Omron G3NA-205B-UTU 5-24VDC. For full specifications, always refer to the official Omron product datasheet, as application-specific derating may apply.
| Parameter | Value |
|---|---|
| Product Type | Single Phase SSR |
| Coil / Operating Voltage | 24V DC |
| Contacts / Channels | 1-phase |
| Contact Current | 20 A |
| Key Features | Zero-cross switching, optical isolation 4000 V, broad control input |
| Mounting | Heatsink or panel |
| Mechanical Lifetime | Semiconductor — no moving parts |
| Operating Temperature | -30 °C to +80 °C |
Where This Product Fits
The Omron G3NA-205B-UTU 5-24VDC Single Phase SSR is commonly specified for the following applications:
- Single-phase heaters
- Resistive loads
- Industrial ovens
Across these use cases, the consistent thread is a need for dependable switching over a large number of operations, often in environments where an unplanned fault would create significant disruption. The Omron G3NA-205B-UTU 5-24VDC is designed with exactly those conditions in mind.
Practical Installation Tips
The Omron G3NA-205B-UTU 5-24VDC Single Phase SSR follows standard DIN rail mounting practice. Before inserting the unit into its socket or fixing it to the rail, always verify the circuit is fully de-energised. Check that cable cross-sections are appropriate for the load, and after commissioning, mark the panel clearly with the device type and rated voltage for future maintenance reference.
For ongoing maintenance, periodically inspect for contact discolouration, check terminal screws for loosening, and look for any signs of heat stress on the housing. Catching these early avoids the much larger cost of an unplanned production stop.
Performance You Can Rely On
From a total cost of ownership perspective, the Omron G3NA-205B-UTU 5-24VDC Single Phase SSR makes financial sense even when its purchase price is higher than alternatives. Reduced unplanned downtime, fewer replacement cycles, and lower maintenance labour costs add up to a clear advantage over the operational lifetime of a machine.
Frequently Asked Questions
What is the difference between the Omron G3NA-205B-UTU 5-24VDC and a mechanical contactor?
The Omron G3NA-205B-UTU 5-24VDC Single Phase SSR is designed for panel-level signal and load switching at the current ratings specified. A contactor is built for direct motor starting at higher currents. For applications within the rated capacity of the Omron G3NA-205B-UTU 5-24VDC, it offers faster switching, longer life, and a smaller footprint than a contactor.
How does temperature affect the Omron G3NA-205B-UTU 5-24VDC?
Like all electromechanical devices, performance can be affected at the extremes of the operating temperature range. The Omron G3NA-205B-UTU 5-24VDC is rated for use across a defined ambient temperature range — consult the datasheet for precise limits and any derating requirements at elevated temperatures.
Can I mount multiple Omron G3NA-205B-UTU 5-24VDC units side by side on a DIN rail?
Yes. The Omron G3NA-205B-UTU 5-24VDC Single Phase SSR is designed for standard DIN rail assembly with adjacent units. Ensure adequate total load current is within the rail and busbar capacity, and that enclosure ventilation is sufficient for the combined heat dissipation.
Does the Omron G3NA-205B-UTU 5-24VDC include a test facility?
Depending on the model variant, some Omron relay sockets include a manual test button or push-to-test function. Check the specific socket model specified for the Omron G3NA-205B-UTU 5-24VDC to confirm whether this feature is available.
How long is the warranty on the Omron G3NA-205B-UTU 5-24VDC?
Omron provides a standard 12-month manufacturer warranty on products purchased through authorised distributors. Extended warranty options may be available — contact your local Omron distributor for details.