Omron MY4N 100/110VDC (S) Miniature Power Relay Guide

The Omron MY4N 100/110VDC (S) miniature power relay is a 4-pole plug-in relay intended for DC control systems using 100 VDC or 110 VDC coil supplies. It belongs to the Omron MY relay family, which is widely recognized in control panels, relay logic circuits, industrial machines, and automation interfaces. This version includes an LED operation indicator, helping users confirm coil status quickly during inspection and maintenance.

Technical Profile

The relay has coil ratings of 100 VDC at approximately 8.7 mA and 110 VDC at approximately 9.6 mA. Coil resistance is specified at 11,440 ohms, and the operate voltage is 80 percent maximum of rated voltage. These values make it suitable for higher-voltage DC control systems where low coil current is preferred and where the control architecture already provides 100 or 110 VDC.

The Omron MY4N 100/110VDC (S) uses a 4PDT contact form with single contacts. Contact material is Au-clad plus Ag alloy, supporting dependable electrical continuity for control-level switching. The relay is built with a closed cover and plug-in terminal structure, making it appropriate for organized panel layouts and serviceable relay banks.

Load Ratings and Use Cases

Rated loads include 220 VAC at 3 A for resistive loads, 220 VAC at 0.8 A for inductive AC loads, 24 VDC at 3 A for resistive DC loads, and 24 VDC at 1.5 A for inductive DC loads. This makes the relay appropriate for control circuit switching, signal multiplication, annunciator systems, relay logic, machine interlocks, and auxiliary command circuits.

Design and Maintenance Benefits

The LED indicator is one of the most useful field features of this relay. In live control panels, it allows maintenance personnel to see whether the coil is energized before checking downstream wiring. The socket-mounted design also supports faster replacement and cleaner wiring practices. Since this MY4N version does not rely on an integrated diode designation like D2 models, the control circuit should be reviewed separately if surge suppression is required.

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Omron MY4N 100/110VDC (S) FAQ

What is Omron MY4N 100/110VDC (S) used for?

It is used in DC control panels where a 100 or 110 VDC coil supply is available. Common uses include relay logic, industrial machine controls, interposing relay circuits, signaling, and auxiliary switching.

What does the LED indicator show?

The LED shows that the relay coil is energized. It does not prove that every contact is carrying current, but it is very helpful for confirming the input command state.

Omron MY4N 100/110VDC (S) Is this relay a 4PDT device?

Yes. It has four changeover contacts controlled by one coil, allowing several circuits to be switched simultaneously.

Can it be used with AC loads?

Yes, the contacts can switch AC loads within the rated limits. The coil itself, however, is designed for DC control voltage.

Does this relay include diode surge suppression?

This model is listed as an MY4N version with an operation indicator. If surge suppression is needed, the circuit design should include suitable external protection unless a specific suppression version is selected.