Omron MY4ZN-D2 24VDC (S) Relay Technical Overview
The Omron MY4ZN-D2 24VDC (S) relay is a compact plug-in electromechanical relay designed for control panels, automation circuits, signal switching, and industrial interface applications where clear status feedback and stable contact performance are important. As a 14-pin 4PDT relay, it allows four separate changeover circuits to be controlled by one 24 VDC coil, making it useful in systems where multiple control signals must switch together.
A defining feature of this model is its bifurcated contact structure. Bifurcated contacts help improve switching reliability in low-level signal circuits because each contact point is divided into two contact paths. This design can support more consistent electrical continuity in control and monitoring applications. The contact material uses gold-clad silver alloy, which is suitable for applications that require dependable signal transfer and reduced contact instability.
Key Technical Characteristics
The Omron MY4ZN-D2 24VDC (S) relay uses a 24 VDC coil with built-in diode surge absorption. The integrated diode helps manage reverse voltage generated when the relay coil is de-energized, supporting cleaner operation in DC control systems. The relay also includes an LED operation indicator and a mechanical indicator, allowing maintenance personnel to check operating status quickly without relying only on electrical testing.
The relay has a 4PDT contact form and is intended for plug-in socket installation. This format simplifies replacement and service work in control panels because the relay can be removed from its socket without rewiring the entire circuit. For machinery builders, panel designers, and maintenance teams, this structure supports efficient troubleshooting and reduced downtime.
Where This Relay Is Commonly Used
This relay is suitable for industrial automation panels, machine control circuits, alarm systems, interlock circuits, and signal routing applications. Because it combines four changeover contacts in one unit, it is often useful where several electrical paths need to respond to the same control signal. The 24 VDC coil rating also fits many PLC-based control systems and low-voltage automation architectures.
Omron MY4ZN-D2 24VDC (S) For product selection across related industrial relay models, see Omron relay information.
Omron MY4ZN-D2 24VDC (S) FAQ
What type of relay is the Omron MY4ZN-D2 24VDC (S)?
It is a plug-in electromechanical power relay with a 4PDT contact configuration, 14-pin terminal format, bifurcated contacts, LED indication, mechanical indication, and a 24 VDC coil.
What does 4PDT mean?
4PDT means four-pole double-throw. The relay can switch four independent circuits, and each circuit has both normally open and normally closed contact paths.
Why are bifurcated contacts important?
Bifurcated contacts provide two contact points for each switching path. This can improve reliability in signal-level switching and control circuits where stable contact behavior is required.
Does this relay include coil protection?
Yes. The D2 designation indicates built-in diode surge suppression, which helps control coil-generated reverse voltage in DC circuits.
Is the relay easy to maintain?
Yes. Its plug-in structure, transparent-style relay format, LED indicator, and mechanical indicator make inspection and replacement easier in panel environments.