MK3P-I AC240 Equivalent & Substitute Parts

Part Overview

The MK3P-I AC240 is a general purpose relay manufactured by Omron Automation and Safety, featuring a 3PDT (3 Form C) contact configuration with 10A contact rating and 240VAC coil voltage. This relay is designed for socketable mounting with an 11-pin octal termination style and includes a mechanical indicator for operational status.

The MK3P-I AC240 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain system functionality, ensure supply chain continuity, and support legacy equipment maintenance where direct replacement availability is limited.

Substiute Parts

MK3P-I AC240

Omron Automation and SafetyIn Stock: 1020MK3P-I AC240 Datasheet

Current PartRFQ

KRPA-14AG-240

TE Connectivity Potter & Brumfield RelaysIn Stock: 1308KRPA-14AG-240 Datasheet

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KRPA-14AN-24

TE Connectivity Potter & Brumfield RelaysIn Stock: 937KRPA-14AN-24 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the MK3P-I AC240 is determined by strict alignment of the following critical parameters:

• Coil voltage matching (240VAC requirement)
• Contact form equivalence (3PDT / 3 Form C)
• Contact current rating (10A minimum)
• Socketable mounting configuration
• 11-pin octal termination compatibility
• Non-latching coil type
• General purpose relay classification

Based on these criteria, the KRPA-14AG-240 qualifies as a direct substitute. It maintains identical coil voltage (240VAC), contact form (3PDT), current rating (10A), mounting type (socketable), and termination style (11-pin octal).

The KRPA-14AN-24 does not qualify as a direct substitute due to its 24VAC coil voltage, which differs from the required 240VAC specification.

Parameter Comparison

Engineering Selection Recommendations

The KRPA-14AG-240 is the qualified substitute for the MK3P-I AC240 based on matching coil voltage, contact configuration, current rating, and termination specifications. The KRPA-14AG-240 is currently in active production status with 1212 units available in inventory.

Selection consideration: The KRPA-14AG-240 is RoHS non-compliant, whereas the original MK3P-I AC240 is RoHS compliant. Applications subject to RoHS requirements should evaluate compliance implications before implementation.

The KRPA-14AN-24 operates at 24VAC coil voltage and is not suitable as a substitute for 240VAC applications.

Frequently Asked Questions (FAQ)

Q: Can the KRPA-14AG-240 directly replace the MK3P-I AC240 in existing circuits?

A: Yes. The KRPA-14AG-240 maintains identical coil voltage (240VAC), contact form (3PDT), current rating (10A), socketable mounting, and 11-pin octal termination. Physical and electrical compatibility is established.

Q: What is the difference between the KRPA-14AG-240 and KRPA-14AN-24?

A: The primary difference is coil voltage. The KRPA-14AG-240 operates at 240VAC, matching the original MK3P-I AC240 specification. The KRPA-14AN-24 operates at 24VAC and is not interchangeable for 240VAC applications.

Q: Are there compliance differences between the MK3P-I AC240 and KRPA-14AG-240?

A: Yes. The MK3P-I AC240 is RoHS compliant, while the KRPA-14AG-240 is RoHS non-compliant. Applications requiring RoHS compliance must account for this difference in material composition and regulatory status.

Q: What packaging options are available for substitute parts?

A: The KRPA-14AG-240 is supplied in tray packaging. The KRPA-14AN-24 is supplied in bulk packaging. Packaging selection should align with procurement and handling requirements.

Q: How do operating temperature ranges compare?

A: The MK3P-I AC240 operates from -10°C to 40°C. The KRPA-14AG-240 operates from -45°C to 55°C, providing extended temperature capability. Application temperature requirements should be verified against the selected substitute.