Omron MY2N-CR 110/120VAC (S) Miniature Power Relay
The Omron MY2N-CR 110/120VAC (S) miniature power relay is a plug-in DPDT relay with built-in CR surge absorption for the coil circuit. It is designed for 110/120 VAC control systems and includes an LED operation indicator, making it suitable for industrial control panels where visibility and coil surge reduction are important.
The “CR” designation refers to a capacitor-resistor surge suppression circuit. This feature helps reduce voltage spikes generated when the relay coil is de-energized. In AC control panels, this can support cleaner switching behavior and help reduce electrical noise affecting nearby control components.
Technical Specifications
The Omron MY2N-CR 110/120VAC (S) miniature power relay uses a 110/120 VAC coil. Coil ratings include 110 VAC at 50 Hz and 60 Hz, as well as 120 VAC at 50 Hz and 60 Hz. Official data lists approximately 9.9 mA at 110 VAC 50 Hz, 8.4 mA at 110 VAC 60 Hz, 10.8 mA at 120 VAC 50 Hz, and 9.2 mA at 120 VAC 60 Hz. The coil resistance is listed as 4,430 ohms, and the operate voltage is 80% maximum of rated voltage.
The relay has a DPDT contact form, plug-in terminals, silver contacts, closed cover construction, and socket mounting. Contact ratings include 220 VAC 5 A for resistive loads, 220 VAC 2 A for inductive loads, 24 VDC 5 A for resistive loads, and 24 VDC 2 A for inductive loads.
Why Built-In CR Suppression Matters
When a relay coil is switched off, stored energy in the coil can produce a voltage spike. In control panels with many relays, these spikes may contribute to electrical noise. The built-in CR circuit in the MY2N-CR model helps absorb coil surge energy, making it a better choice than a standard relay in applications where noise reduction is part of the design requirement.
This does not remove the need for good panel design. Proper grounding, cable routing, load suppression, and separation of power and signal wiring are still important. However, choosing a relay with built-in coil surge suppression can simplify the design and reduce the number of external components.
Applications
The MY2N-CR 110/120VAC (S) is commonly used in control panels powered by 110 or 120 VAC auxiliary circuits. Typical applications include machine control, HVAC equipment, packaging systems, relay logic panels, auxiliary switching, alarms, and interface circuits.
The LED indicator helps maintenance teams confirm coil energization. The DPDT contacts allow two control paths to be switched at the same time, which is useful for interlocks, feedback circuits, and parallel control functions.
Omron MY2N-CR 110/120VAC (S) Installation Notes
Before installation, confirm that the control supply is 110/120 VAC and that the load does not exceed the relay’s contact rating. The relay should be used with compatible MY series sockets. Since this is a CR suppression model, it is especially relevant where AC coil surge absorption is preferred over external suppressor wiring.
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Omron MY2N-CR 110/120VAC (S) FAQ
What does CR mean in Omron MY2N-CR 110/120VAC (S)?
CR means the relay includes a capacitor-resistor surge suppression circuit for the coil.
What is the coil voltage?
The relay is designed for 110/120 VAC coil operation at 50 Hz or 60 Hz.
Does it have an LED indicator?
Yes. It includes an LED operation indicator for easier visual inspection.
When should a CR relay be selected?
A CR relay is useful when coil surge suppression is desired in AC control circuits, especially in panels with sensitive control electronics.
Can this relay replace a standard MY2N 110/120VAC relay?
It may replace a standard version if the coil voltage, socket, contact ratings, and circuit requirements match. The added CR circuit should also be suitable for the application.