HC4ED-L-AC24V Equivalent & Substitute Parts

Part Overview

The HC4ED-L-AC24V is a general purpose relay manufactured by Panasonic Electric Works, featuring a 4PDT (4 Form C) contact configuration with 24VAC coil voltage and 1A contact rating. This socketable relay includes a lighted indicator and is designed for general-purpose switching applications. The product is currently obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new designs requiring compatible functionality.

Substiute Parts

HC4ED-L-AC24V

Panasonic Electric WorksIn Stock: 927HC4ED-L-AC24V Datasheet

Current PartRFQ

MY4Z AC24 (S)

Omron Automation and SafetyIn Stock: 753MY4Z AC24 (S) Datasheet

SimilarRFQ

MY4ZN AC24 (S)

Omron Automation and SafetyIn Stock: 978MY4ZN AC24 (S) Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the HC4ED-L-AC24V is based on the following critical parameters that must match or exceed the original specification:

• Contact Form: 4PDT (4 Form C) configuration required for equivalent switching capability
• Coil Voltage: 24VAC operation mandatory for direct replacement in existing circuits
• Mounting Type: Socketable configuration required for mechanical compatibility
• Termination Style: Plug In termination required for socket compatibility
• Coil Type: Non Latching operation required for functional equivalence
• Must Operate Voltage: 19.2 VAC minimum
• Must Release Voltage: 7.2 VAC maximum
• Operate/Release Time: 20 ms for both parameters

The substitute parts identified (MY4Z AC24 (S) and MY4ZN AC24 (S)) meet all critical parameters. While these Omron alternatives feature higher contact ratings (3A versus 1A), this represents an upgrade that maintains full backward compatibility. The socketable mounting and plug-in termination ensure mechanical interchangeability.

Parameter Comparison

Engineering Selection Recommendations

MY4ZN AC24 (S) is the primary recommended substitute. This part maintains functional equivalence with the HC4ED-L-AC24V while offering the following advantages:

• Active product status ensures ongoing availability and supply chain continuity
• RoHS compliance meets current environmental and regulatory requirements
• Lighted indicator feature matches the original design
• Extended operating temperature range (-55°C ~ 70°C) provides broader environmental compatibility
• Higher contact rating (3A) supports applications with increased current demands without circuit modification

MY4Z AC24 (S) serves as an alternative substitute when lighted indicator functionality is not required. This part is functionally equivalent in all switching and coil parameters and maintains active product status with RoHS compliance.

Both substitutes are socketable with plug-in termination, ensuring direct mechanical and electrical compatibility with existing HC4ED-L-AC24V socket installations.

Frequently Asked Questions (FAQ)

Q: Can MY4Z AC24 (S) or MY4ZN AC24 (S) directly replace HC4ED-L-AC24V in existing applications?

A: Yes. Both substitute parts feature identical contact form (4PDT), coil voltage (24VAC), mounting type (socketable), and termination style (plug-in). Electrical and mechanical compatibility is maintained. The higher contact rating (3A versus 1A) represents an upgrade that does not compromise backward compatibility.

Q: What is the difference between MY4Z AC24 (S) and MY4ZN AC24 (S)?

A: The primary difference is the lighted indicator feature. MY4ZN AC24 (S) includes a lighted indicator matching the HC4ED-L-AC24V original design. MY4Z AC24 (S) does not include this feature. Both parts are electrically and mechanically equivalent in all other parameters.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both MY4Z AC24 (S) and MY4ZN AC24 (S) are RoHS compliant. The original HC4ED-L-AC24V RoHS status was not specified in available documentation.

Q: Will the substitute relays fit in the existing socket designed for HC4ED-L-AC24V?

A: Yes. Both substitute parts are socketable with plug-in termination, matching the original mounting configuration. No socket modification is required.

Q: What is the operating temperature range for the substitute parts?

A: Both MY4Z AC24 (S) and MY4ZN AC24 (S) operate across -55°C to 70°C, which exceeds the original HC4ED-L-AC24V range of -40°C to 60°C.

Q: Can I use these substitutes in applications requiring the lighted indicator?

A: MY4ZN AC24 (S) includes the lighted indicator feature and is the appropriate choice for such applications. MY4Z AC24 (S) does not include this feature and should not be used where indicator functionality is required.