Omron MY4I4 AC24 General Purpose Relay - Equivalent & Substitute Parts

Part Overview

The Omron MY4I4 AC24 is a general purpose relay featuring a 4PDT (4 Form C) contact configuration with a 24VAC coil. This relay is classified as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations. The MY4I4 AC24 provides switching capability up to 250VAC and 220VDC maximum, serving applications requiring multiple independent switching circuits from a single coil energization.

Substiute Parts

MY4I4 AC24

Omron Automation and SafetyIn Stock: 1192MY4I4 AC24 Datasheet

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MY4IN AC24 (S)

Omron Automation and SafetyIn Stock: 1160MY4IN AC24 (S) Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MY4I4 AC24 is determined by the following critical parameters that must remain consistent:

• Contact Configuration: 4PDT (4 Form C) - provides four independent switching circuits
• Coil Voltage: 24VAC - ensures compatibility with existing control circuits
• Relay Type: General Purpose - maintains functional classification
• Coil Type: Non Latching - ensures momentary operation characteristics
• Switching Voltage Rating: Must support minimum 250VAC and 220VDC maximum

The MY4IN AC24 (S) qualifies as a direct substitute within the Omron MY series, maintaining all critical electrical parameters while offering enhanced features and active product status.

Parameter Comparison

Engineering Selection Recommendations

The MY4IN AC24 (S) is the designated substitute for the obsolete MY4I4 AC24. Selection of this substitute is supported by the following factors:

• Product Status: The MY4IN AC24 (S) maintains active product status, ensuring continued availability and manufacturer support
• Regulatory Compliance: Both components share identical ECCN classification (EAR99) and moisture sensitivity rating (MSL 1)
• RoHS Compliance: The MY4IN AC24 (S) is RoHS compliant, meeting current environmental standards
• Electrical Compatibility: The substitute maintains the critical 4PDT contact configuration, 24VAC coil voltage, and non-latching operation required for functional equivalence
• Enhanced Features: The MY4IN AC24 (S) includes socketable mounting and plug-in termination, providing improved installation flexibility compared to the obsolete predecessor

Frequently Asked Questions (FAQ)

Q: Can the MY4IN AC24 (S) directly replace the MY4I4 AC24 in existing applications?

A: Yes. Both relays maintain identical contact configuration (4PDT), coil voltage (24VAC), and coil type (non-latching). The MY4IN AC24 (S) offers socketable mounting and plug-in termination, which may require mechanical adaptation depending on the original installation method.

Q: What is the difference in switching voltage ratings between these two relays?

A: The MY4I4 AC24 supports 250VAC and 220VDC maximum switching voltage. The MY4IN AC24 (S) supports 250VAC and 125VDC maximum switching voltage. For applications requiring 220VDC switching, the original specification must be verified against actual load requirements.

Q: Why is the MY4I4 AC24 classified as obsolete?

A: Omron has transitioned this model to end-of-life status. The MY4IN AC24 (S) represents the active product line continuation within the MY series, offering equivalent functionality with enhanced features and ongoing manufacturer support.

Q: Are there packaging differences between these relays?

A: The MY4I4 AC24 packaging is not specified in available documentation. The MY4IN AC24 (S) is supplied in bulk packaging with socketable mounting and plug-in termination, providing standardized handling and installation procedures.

Q: Do both relays meet the same regulatory requirements?

A: Yes. Both components share identical ECCN classification (EAR99) and moisture sensitivity level (MSL 1 - Unlimited). The MY4IN AC24 (S) additionally carries RoHS compliance certification.