MK2P-S-AC6 Equivalent & Substitute Parts

Part Overview

The MK2P-S-AC6 is a general purpose relay manufactured by Omron Automation and Safety, featuring a DPDT (2 Form C) contact configuration with a 6VAC coil. This socketable, 8-pin octal relay is designed for applications requiring dual-pole, dual-throw switching at 10A contact rating. The product is currently obsolete, making identification of compatible substitute parts essential for maintenance, repair, and legacy system support.

Substiute Parts

MK2P-S-AC6

Omron Automation and SafetyIn Stock: 1123MK2P-S-AC6 Datasheet

Current PartRFQ

KRPA-11AY-6

TE Connectivity Potter & Brumfield RelaysIn Stock: 1234KRPA-11AY-6 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MK2P-S-AC6 is determined by the following critical parameters:

• Coil voltage matching: 6VAC requirement
• Contact configuration: DPDT (2 Form C) mandatory
• Mounting compatibility: Socketable, 8-pin octal termination required
• Coil type: Non-latching operation
• Contact material: Silver (Ag) for electrical performance consistency

The KRPA-11AY-6 qualifies as a substitute based on matching coil voltage (6VAC), contact form (DPDT), mounting type (socketable octal), and coil type (non-latching). However, the contact rating differs: the substitute provides 5A maximum versus the original 10A specification. This reduction in current capacity represents the primary limitation for direct substitution and must be evaluated against application requirements.

Parameter Comparison

Engineering Selection Recommendations

The KRPA-11AY-6 is functionally compatible with the MK2P-S-AC6 for applications where the reduced contact rating of 5A is acceptable. Both relays are obsolete products, indicating limited future availability through standard distribution channels.

Selection between these parts should be based on:

• Application current requirements: If the circuit operates at or below 5A, the KRPA-11AY-6 provides direct substitution with identical coil voltage, contact configuration, and mounting interface.
• Switching voltage requirements: The MK2P-S-AC6 supports 250VDC switching; the KRPA-11AY-6 is rated for 240VAC maximum. Verify application voltage compatibility.
• Temperature operating range: The KRPA-11AY-6 extends to -45°C and +55°C versus -10°C to +40°C for the original part. Select based on environmental requirements.
• Compliance status: The KRPA-11AY-6 carries ROHS3 compliance; the MK2P-S-AC6 status is not specified in available documentation.

Frequently Asked Questions (FAQ)

Q: Can the KRPA-11AY-6 directly replace the MK2P-S-AC6 in all applications?

A: Direct replacement is possible only when circuit current requirements do not exceed 5A. The KRPA-11AY-6 contact rating is 5A maximum, compared to 10A for the original part. Verify your application's actual current draw before substitution.

Q: Are the octal socket connections identical between these relays?

A: Both relays use 8-pin octal plug-in termination, providing mechanical and electrical compatibility at the socket interface. Pin configuration must be verified against the specific application schematic.

Q: What is the impact of the different switching voltage ratings?

A: The MK2P-S-AC6 supports 250VAC and 250VDC switching. The KRPA-11AY-6 is rated for 240VAC maximum. If your application requires 250VDC switching capability, the KRPA-11AY-6 may not be suitable. Confirm the actual switching voltage in your circuit.

Q: Why do both relays show obsolete status?

A: Both the MK2P-S-AC6 and KRPA-11AY-6 are discontinued products. Remaining inventory is limited. For new designs, evaluation of current-generation relay alternatives is recommended.

Q: How do the coil currents compare?

A: The MK2P-S-AC6 draws 360 mA; the KRPA-11AY-6 draws 335 mA. Both are within typical control circuit tolerances. The lower coil current of the substitute may provide marginal power savings in applications with multiple relays.