Equivalent & Substitute Parts for MY4 AC6 (S)

Part Overview

The MY4 AC6 (S) is a general purpose relay manufactured by Omron Automation and Safety, featuring a 4PDT (4 Form C) contact configuration with a 6VAC coil. This socketable relay is designed for applications requiring switching of up to 3A at 250VAC or 125VDC maximum. The part is currently active in production with 974 units in stock. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when supply chain flexibility is required.

Substiute Parts

MY4 AC6 (S)

Omron Automation and SafetyIn Stock: 1034MY4 AC6 (S) Datasheet

Current PartRFQ

KHAU-17A11-6

TE Connectivity Potter & Brumfield RelaysIn Stock: 1103KHAU-17A11-6 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MY4 AC6 (S) is determined by the following critical parameters:

• Coil Voltage: Must be 6VAC to ensure direct compatibility with existing control circuits
• Contact Form: Must be 4PDT (4 Form C) to maintain the same switching capability and circuit topology
• Contact Rating: Must support minimum 3A at the specified switching voltages
• Mounting Type: Must be socketable to fit existing relay sockets
• Termination Style: Must be plug-in compatible with standard relay bases

The substitute part KHAU-17A11-6 from TE Connectivity Potter & Brumfield Relays meets these core requirements, enabling functional equivalence in applications where the MY4 AC6 (S) is specified.

Parameter Comparison

Engineering Selection Recommendations

Both the MY4 AC6 (S) and KHAU-17A11-6 are active production parts with full RoHS compliance and unlimited moisture sensitivity ratings, making them suitable for standard industrial applications. The MY4 AC6 (S) provides a wider operating temperature range (-55°C to 70°C) compared to the KHAU-17A11-6 (-45°C to 70°C), making it preferable for applications requiring extended low-temperature operation. The KHAU-17A11-6 exhibits faster switching characteristics (13 ms operate, 6 ms release versus 20 ms for both parameters on the MY4 AC6 (S)), which may be advantageous in time-critical applications. The KHAU-17A11-6 has a maximum AC switching voltage rating of 240VAC, which is lower than the MY4 AC6 (S) rating of 250VAC; applications requiring the full 250VAC switching capability should retain the MY4 AC6 (S). Both parts share identical coil voltage, contact form, current rating, mounting type, and termination style, ensuring mechanical and electrical compatibility in standard relay socket applications.

Frequently Asked Questions (FAQ)

Q: Can KHAU-17A11-6 be used as a direct replacement for MY4 AC6 (S) in all applications?

A: KHAU-17A11-6 is functionally equivalent for most applications due to matching coil voltage, contact form, current rating, and socketable mounting. However, applications requiring operation at 250VAC should use the MY4 AC6 (S), as KHAU-17A11-6 is rated to 240VAC maximum. Applications requiring operation below -45°C should use the MY4 AC6 (S) due to its extended temperature range.

Q: What are the key differences in switching performance?

A: KHAU-17A11-6 operates faster (13 ms versus 20 ms) and releases faster (6 ms versus 20 ms) than the MY4 AC6 (S). This difference may affect timing-sensitive circuits and should be evaluated for specific applications.

Q: Are both parts RoHS compliant?

A: Yes. The MY4 AC6 (S) is RoHS Compliant, and the KHAU-17A11-6 is ROHS3 Compliant. Both meet current environmental compliance requirements.

Q: Do both relays fit the same socket?

A: Yes. Both parts are socketable with plug-in termination style, designed for standard relay bases. Mechanical compatibility is confirmed.

Q: What is the difference in coil current requirements?

A: The MY4 AC6 (S) requires 183 mA coil current, while KHAU-17A11-6 requires 200 mA. Control circuits must supply sufficient current for the selected relay. The KHAU-17A11-6 has lower coil resistance (10.5 Ohms versus 12.2 Ohms), resulting in higher current draw at the same voltage.