Omron PF113A-D Relay Socket: Technical Guide, Applications and Installation
Industrial automation decisions are rarely reversed quickly. Choosing the Omron PF113A-D Relay Socket for LY4 relay mounting applications is the kind of decision that stays looking smart years later, when the system is still running without issues.
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.
What Is the Omron PF113A-D Relay Socket?
The Omron PF113A-D is a Relay Socket, built to handle LY4 relay mounting reliably over a long service life. Key engineering features include compatible with ly4 series, screw terminals, and the unit mounts via din rail.
What separates this unit from generic alternatives is in the details: compatible with ly4 series, screw terminals. making it straightforward to match to existing control voltage buses without additional transformers or converters.
Technical Specifications
The table below summarises the main technical parameters of the Omron PF113A-D. For full specifications, always refer to the official Omron product datasheet, as application-specific derating may apply.
| Parameter | Value |
|---|---|
| Product Type | Relay Socket |
| Contacts / Channels | 11-pin |
| Contact Current | 10 A |
| Key Features | Compatible with LY4 series, screw terminals |
| Mounting | DIN rail |
| Operating Temperature | -25 °C to +70 °C |
| Compatible Socket | LY4 series |
Where Is It Used?
The Omron PF113A-D Relay Socket is commonly specified for the following applications:
- Ly4 relay mounting
- 11-pin relay applications
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 PF113A-D is designed with exactly those conditions in mind.
The Omron PF113A-D is designed to be used with LY4 series. Using a non-compatible socket model can compromise contact pressure and reduce overall service life, so always verify socket compatibility before ordering.
Installation Notes
One underrated aspect of working with Omron components like the PF113A-D Relay Socket is the consistency of the mounting system. If you have installed any other unit from the same family, the process is identical — same rail, same socket dimensions, same terminal layout. That repeatability genuinely speeds up panel assembly in high-volume projects.
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.
Why Choose the Omron PF113A-D?
The case for choosing the Omron PF113A-D Relay Socket is not built on marketing alone. It rests on measurable factors: documented mechanical and electrical lifespan ratings, certifications that satisfy CE and UL requirements, and a global spare parts network that means you can source a replacement quickly when a unit eventually reaches end of life.
Frequently Asked Questions
What is the difference between the Omron PF113A-D and a mechanical contactor?
The Omron PF113A-D Relay Socket 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 PF113A-D, it offers faster switching, longer life, and a smaller footprint than a contactor.
How does temperature affect the Omron PF113A-D?
Like all electromechanical devices, performance can be affected at the extremes of the operating temperature range. The Omron PF113A-D 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 PF113A-D units side by side on a DIN rail?
Yes. The Omron PF113A-D Relay Socket 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 PF113A-D 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 PF113A-D to confirm whether this feature is available.
How long is the warranty on the Omron PF113A-D?
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.

