Equivalent & Substitute Parts for MK2P-S-AC24

Part Overview

The Omron MK2P-S-AC24 is a general purpose relay with DPDT (2 Form C) contact configuration, rated for 10A at 24VAC coil voltage. This relay features socketable mounting with 8-pin octal termination, mechanical indicator, and test button functionality. The MK2P-S-AC24 is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new designs requiring compatible relay functionality.

Substiute Parts

MK2P-S-AC24

Omron Automation and SafetyIn Stock: 812MK2P-S-AC24 Datasheet

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MKS2PI AC24

Omron Automation and SafetyIn Stock: 1183MKS2PI AC24 Datasheet

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KRPA-11AG-24

TE Connectivity Potter & Brumfield RelaysIn Stock: 1068KRPA-11AG-24 Datasheet

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KRPA-11AN-24

TE Connectivity Potter & Brumfield RelaysIn Stock: 1243KRPA-11AN-24 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MK2P-S-AC24 is determined by the following critical parameters:

• Coil voltage must be 24VAC
• Contact form must be DPDT (2 Form C)
• Contact rating must be 10A minimum
• Mounting type must be socketable
• Termination must be 8-pin octal plug-in configuration
• Coil type must be non-latching

The three substitute parts listed below meet these core electrical and mechanical requirements. Variations in coil current, coil resistance, contact material composition, and operating temperature ranges are permissible within the scope of general purpose relay substitution, as these parameters do not affect the fundamental switching capability or socket compatibility.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are functionally compatible with the MK2P-S-AC24 based on core electrical and mechanical parameters. Selection should be based on the following criteria:

MKS2PI AC24 (Omron Automation and Safety): This substitute maintains manufacturer continuity with the original MK2P-S-AC24. It is currently in active production status and carries ROHS3 compliance certification. The MKS2PI AC24 offers an extended operating temperature range (-40°C to 60°C) compared to the original part, providing greater environmental flexibility. Contact material composition differs (AgSnIn versus Ag), which is acceptable for general purpose relay applications.

KRPA-11AG-24 (TE Connectivity Potter & Brumfield Relays): This substitute is an active production part with ROHS3 compliance. It provides a wider operating temperature range (-45°C to 55°C). The KRPA-11AG-24 features standard mechanical indicator functionality without additional features. Coil current is slightly lower at 84 mA compared to the original 88 mA.

KRPA-11AN-24 (TE Connectivity Potter & Brumfield Relays): This substitute is an active production part with ROHS3 compliance and identical electrical specifications to the KRPA-11AG-24. The distinguishing feature is the inclusion of a lighted indicator, which may be advantageous in applications requiring visual feedback. Operating temperature range and coil specifications match the KRPA-11AG-24.

Frequently Asked Questions (FAQ)

Q: Can the MKS2PI AC24 be used as a direct replacement for the MK2P-S-AC24?

A: Yes. Both parts share identical coil voltage (24VAC), contact form (DPDT), current rating (10A), and 8-pin octal socketable termination. The MKS2PI AC24 is the Omron successor product and maintains full compatibility.

Q: What is the significance of the different contact materials (Ag, AgSnIn, AgCdO)?

A: Contact material composition affects contact resistance and wear characteristics under specific load conditions. For general purpose relay applications at the specified 10A rating, all three material compositions are functionally equivalent. Material selection should be based on the specific switching load profile of the application.

Q: Are there any compatibility concerns with the TE Connectivity KRPA series relays?

A: No. The KRPA-11AG-24 and KRPA-11AN-24 meet all core substitution criteria: 24VAC coil, DPDT contact form, 10A rating, and 8-pin octal socketable termination. Both are active production parts with current compliance certifications.

Q: What is the difference between KRPA-11AG-24 and KRPA-11AN-24?

A: The primary difference is the inclusion of a lighted indicator on the KRPA-11AN-24. All other electrical and mechanical specifications are identical. Selection between these two should be based on whether visual indication is required in the application.

Q: How do the operating temperature ranges affect substitution decisions?

A: The original MK2P-S-AC24 operates from -10°C to 40°C. All three substitutes offer equal or extended temperature ranges. If the application operates within the original temperature specification, any substitute is suitable. For applications requiring extended temperature operation, the MKS2PI AC24, KRPA-11AG-24, or KRPA-11AN-24 provide superior environmental performance.

Q: Are all substitutes RoHS compliant?

A: The MKS2PI AC24, KRPA-11AG-24, and KRPA-11AN-24 are all ROHS3 compliant. The original MK2P-S-AC24 does not carry RoHS certification status in the provided data.