Omron G2R-1-SD 24VDC (S) Relay Socket: Diode-Protected Relay Overview

The Omron G2R-1-SD 24VDC (S) relay socket is a plug-in general-purpose relay designed for 24 VDC control circuits. The important difference in this model is the built-in diode protection, which helps suppress reverse voltage generated by the relay coil when it is switched off. This makes the relay useful in PLC-controlled panels and electronic control systems.

Core Technical Features

This model has a 24 VDC coil, SPDT contact configuration, and 10 A rated carry current. It is a 5-pin plug-in relay with a transparent case and mechanical operation indicator. Omron lists the model with diode protection, which is especially relevant when the relay coil is driven by transistor outputs or sensitive control electronics.

What the Built-In Diode Does

When a DC relay coil is de-energized, it can produce a voltage spike. The diode helps absorb this spike and protects connected electronic devices. In control panels that use PLCs, I/O modules, or semiconductor output devices, this protection can improve long-term reliability.

Application Areas

The Omron G2R-1-SD 24VDC (S) is suitable for PLC output interfaces, automation cabinets, machine control circuits, relay logic systems, and signal switching applications. It is a strong choice when a standard 24 VDC relay is needed but coil suppression is also required.

Socket and Maintenance Benefits

As a plug-in relay, it can be installed on compatible Omron socket bases such as the P2RF series. This allows clean wiring, fast replacement, and easier inspection. For related Omron relay options, visit Omron industrial components.

Omron G2R-1-SD 24VDC FAQ

What does the “D” mean in G2R-1-SD 24VDC (S)?

In this model, “D” indicates diode protection for the DC coil circuit.

Why is diode protection useful?

It helps suppress coil voltage spikes when the relay turns off, protecting PLC outputs and electronic control circuits.

Is this relay suitable for 24 VDC PLC systems?

Yes. It is commonly used in 24 VDC automation and PLC interface applications.

Does the relay have a mechanical indicator?

Yes. It includes a mechanical operation indicator for visual status checking.

Can this model replace G2R-1-S 24VDC (S)?

It may be suitable in many 24 VDC applications, but the diode polarity, socket wiring, coil requirements, and circuit design must be checked before replacement.