HJ2-AC24V Equivalent & Substitute Parts

Part Overview

The Panasonic Electric Works HJ2-AC24V is a general purpose relay with DPDT (2 Form C) contact configuration, rated for 7A at 24VAC coil voltage. This socketable relay is designed for industrial control applications requiring reliable switching of AC and DC loads. The product is currently obsolete, making equivalent substitutes necessary for ongoing maintenance and new designs requiring compatible functionality.

Substiute Parts

HJ2-AC24V

Panasonic Electric WorksIn Stock: 951HJ2-AC24V Datasheet

Current PartRFQ

1393800-8

TE Connectivity Potter & Brumfield RelaysIn Stock: 9381393800-8 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HJ2-AC24V is determined by the following critical parameters:

• Coil Voltage: Must be 24VAC to ensure direct compatibility with existing control circuits
• Contact Form: Must be DPDT (2 Form C) to maintain identical switching capability
• Mounting Type: Must be socketable to fit existing relay bases and sockets
• Termination Style: Must be plug-in to ensure mechanical and electrical compatibility
• Coil Type: Must be non-latching for equivalent operational behavior
• Contact Rating: Must meet or exceed 7A to handle the same load requirements
• Switching Voltage: Must support at least 250VAC and 125VDC to cover the original application range

The TE Connectivity Potter & Brumfield Relays model 1393800-8 meets all critical substitution criteria. While it offers higher contact current rating (15A) and extended switching voltage capability (300VDC), these represent improvements that do not compromise compatibility with applications designed for the original 7A relay.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity Potter & Brumfield Relays 1393800-8 is a qualified substitute for the obsolete Panasonic HJ2-AC24V. Selection should be based on the following factors:

Product Status: The HJ2-AC24V is obsolete, necessitating substitution for new procurements and ongoing system maintenance. The 1393800-8 is active and available in production quantities.

Compliance and Certifications: Both parts carry identical MSL ratings (1 - Unlimited) and ECCN classification (EAR99). The 1393800-8 is RoHS3 compliant, meeting current regulatory requirements for electronic components.

Performance Margin: The substitute part provides higher contact current capacity (15A vs. 7A) and extended DC switching voltage capability (300VDC vs. 125VDC). These enhancements do not introduce incompatibility and provide additional design margin for applications operating near the original part's limits.

Temperature Consideration: The substitute operates to 65°C versus the original 70°C upper limit. Applications requiring operation above 65°C should be evaluated for thermal management or alternative solutions.

Frequently Asked Questions (FAQ)

Q: Can the 1393800-8 directly replace the HJ2-AC24V in existing sockets?

A: Yes. Both parts are socketable with plug-in termination, identical coil voltage (24VAC), and identical contact form (DPDT). Physical and electrical compatibility is confirmed.

Q: Does the higher current rating (15A vs. 7A) affect circuit operation?

A: No. The substitute's higher current rating does not affect circuits designed for 7A operation. The relay will function identically in applications within the original 7A specification.

Q: What is the difference between Silver (Ag) and Silver Nickel (AgNi) contact materials?

A: Both materials are suitable for general purpose relay applications. Silver Nickel provides enhanced wear resistance and is commonly used in modern relay designs. No functional difference exists for the specified switching voltages and currents.

Q: Is the 1°C difference in maximum operating temperature significant?

A: For most industrial applications, the difference between 70°C and 65°C is negligible. Applications with thermal margins below 65°C should be evaluated individually.

Q: Are there any compliance differences between the two parts?

A: The 1393800-8 is RoHS3 compliant, while the HJ2-AC24V status is not specified. Both carry identical MSL and ECCN classifications. The substitute meets current regulatory requirements for new designs.