Equivalent & Substitute Parts for MJN3C-AC24

Part Overview

The MJN3C-AC24 is a general purpose relay manufactured by Omron Automation and Safety. This 3PDT (3 Form C) relay operates on a 24VAC coil and is rated for 10A switching capacity. The device features socketable mounting with quick-connect termination, making it suitable for industrial control applications requiring reliable electromagnetic switching. As an active product with RoHS compliance and unlimited moisture sensitivity rating, the MJN3C-AC24 remains in production. Equivalent substitute parts may be required due to supply constraints, regional availability, or specific application requirements for alternative contact materials or switching voltage ratings.

Substiute Parts

MJN3C-AC24

Omron Automation and SafetyIn Stock: 969MJN3C-AC24 Datasheet

Current PartRFQ

KUP-14A15-24

TE Connectivity Potter & Brumfield RelaysIn Stock: 1078KUP-14A15-24 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The KUP-14A15-24 manufactured by TE Connectivity Potter & Brumfield Relays qualifies as a direct substitute for the MJN3C-AC24 based on the following critical parameters:

• Coil Voltage: Both parts operate on 24VAC
• Contact Form: Both provide 3PDT (3 Form C) configuration
• Contact Rating: Both are rated for 10A switching capacity
• Mounting Type: Both feature socketable mounting
• Termination Style: Both use Plug In, Quick Connect - 0.187" (4.7mm) termination
• Coil Type: Both are non-latching relays
• Operating Temperature Range: Both operate across -45°C ~ 45°C
• Coil Resistance: Both have 72 Ohms coil resistance
• Must Operate Voltage: Both require 20.4 VAC minimum

These aligned parameters ensure functional and mechanical compatibility for direct substitution in applications designed for the MJN3C-AC24.

Parameter Comparison

Engineering Selection Recommendations

Both the MJN3C-AC24 and KUP-14A15-24 are active products suitable for general purpose relay applications. The MJN3C-AC24 offers RoHS compliance and a higher maximum switching voltage rating (600VAC, 28VDC) compared to the KUP-14A15-24 (240VAC maximum). The KUP-14A15-24 features a faster operate time (15 ms versus 20 ms) and uses Silver Cadmium Oxide contact material, though it is RoHS non-compliant and REACH-affected.

Selection between these parts should be based on regulatory requirements and application voltage specifications. Applications requiring RoHS compliance or operating above 240VAC should use the MJN3C-AC24. Applications where faster switching response is prioritized and voltage requirements do not exceed 240VAC may use the KUP-14A15-24, provided regulatory restrictions on RoHS and REACH do not apply.

Frequently Asked Questions (FAQ)

Q: Can the KUP-14A15-24 replace the MJN3C-AC24 in all applications?

A: The KUP-14A15-24 is mechanically and electrically compatible for applications operating at 240VAC or below. Applications requiring switching voltages above 240VAC must use the MJN3C-AC24. RoHS compliance requirements must also be evaluated.

Q: What is the difference in switching voltage ratings?

A: The MJN3C-AC24 supports 600VAC and 28VDC maximum switching voltage. The KUP-14A15-24 supports 240VAC maximum. Selection depends on the voltage levels present in the application circuit.

Q: Are the socketable mounting and termination styles identical?

A: Yes. Both relays feature socketable mounting and Plug In, Quick Connect - 0.187" (4.7mm) termination, ensuring mechanical interchangeability in relay sockets designed for these specifications.

Q: What is the impact of different contact materials?

A: The MJN3C-AC24 uses Silver Alloy contacts, while the KUP-14A15-24 uses Silver Cadmium Oxide (AgCdO) contacts. Contact material selection affects arc suppression, contact wear, and application-specific performance characteristics. Application requirements determine which material is appropriate.

Q: Does coil current difference affect circuit design?

A: The MJN3C-AC24 draws 83.3 mA while the KUP-14A15-24 draws 115 mA. Circuit designs must accommodate the higher coil current of the KUP-14A15-24 if substituted. Verify that power supply and control circuitry can supply the required current.

Q: What are the RoHS compliance implications?

A: The MJN3C-AC24 is RoHS compliant. The KUP-14A15-24 is RoHS non-compliant and REACH-affected. Applications subject to RoHS or REACH regulations must use the MJN3C-AC24.