PT52ALN4B General Purpose Relay 4PDT 24VDC Equivalent & Substitute Parts

Part Overview

The PT52ALN4B is a general purpose relay manufactured by TE Connectivity Potter & Brumfield Relays, featuring a 4PDT (4 Form C) contact configuration with 24VDC coil voltage and 6A contact rating. This relay is designed for socketable mounting applications with plug-in termination and includes integrated diode and lighted indicator features.

The PT52ALN4B is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain system functionality, ensure continued availability for replacement applications, and support ongoing maintenance requirements for installed equipment.

Substiute Parts

PT52ALN4B

TE Connectivity Potter & Brumfield RelaysIn Stock: 984PT52ALN4B Datasheet

Current PartRFQ

7760056105

WeidmüllerIn Stock: 7267760056105 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PT52ALN4B is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Coil Voltage: 24VDC
• Contact Form: 4PDT (4 Form C)
• Mounting Type: Socketable
• Termination Style: Plug In
• Coil Type: Non Latching
• Features: Diode, Lighted Indicator
• Switching Voltage: 250VAC - Max
• Must Operate Voltage: 18 VDC
• Must Release Voltage: 2.4 VDC
• Operate Time: 20 ms
• Release Time: 20 ms

Allowable Variation Parameters:

• Contact Rating (Current): The substitute part may exceed the 6A rating of the PT52ALN4B, provided all other electrical and mechanical parameters align
• Operating Temperature Range: The substitute part may have a narrower or different temperature range, provided it encompasses the operational requirements of the application
• Coil Current: Minor variations are acceptable within the socketable relay design constraints
• Coil Resistance: Variations are acceptable provided coil voltage and current characteristics remain compatible

The Weidmüller 7760056105 qualifies as a substitute based on matching all mandatory parameters while providing an increased contact rating of 10A.

Parameter Comparison

Engineering Selection Recommendations

The Weidmüller 7760056105 is a direct substitute for the obsolete PT52ALN4B based on electrical and mechanical parameter alignment. The following factors support this substitution:

Product Status Consideration: The PT52ALN4B is classified as obsolete, while the 7760056105 is active in production. This ensures long-term availability and supply chain continuity for replacement and new applications.

Compliance and Certification: Both parts maintain REACH Unaffected status and EAR99 ECCN classification, ensuring regulatory compliance across equivalent applications. The 7760056105 carries cURus approval agency certification, providing additional third-party validation.

Electrical Compatibility: The 7760056105 maintains identical coil voltage (24VDC), contact form (4PDT), switching voltage (250VAC), and timing characteristics (20ms operate and release times) as the PT52ALN4B. The increased contact rating of 10A provides enhanced current-carrying capacity while maintaining backward compatibility with applications designed for the 6A rating.

Mechanical Compatibility: Both relays feature socketable mounting with plug-in termination, enabling direct physical replacement without modification to existing socket or wiring infrastructure.

Temperature Range Consideration: The 7760056105 operates within -40°C to 60°C, which is narrower than the PT52ALN4B range of -45°C to 70°C. Applications requiring operation below -40°C or above 60°C require evaluation against specific system requirements.

Frequently Asked Questions (FAQ)

Q: Can the Weidmüller 7760056105 directly replace the PT52ALN4B in existing applications?

A: Yes. The 7760056105 matches all mandatory electrical and mechanical parameters of the PT52ALN4B, including coil voltage, contact form, switching voltage, timing characteristics, and socketable mounting configuration. Direct replacement is supported without circuit modification.

Q: What is the significance of the increased 10A contact rating on the 7760056105 compared to the 6A rating of the PT52ALN4B?

A: The 10A rating indicates the 7760056105 can safely switch higher currents than the original 6A specification. Applications designed for 6A operation remain fully compatible. Applications requiring current capacity between 6A and 10A benefit from the increased rating without requiring alternative relay selection.

Q: Are there temperature range limitations when substituting the 7760056105 for the PT52ALN4B?

A: The 7760056105 operates within -40°C to 60°C, compared to the PT52ALN4B range of -45°C to 70°C. Applications requiring operation below -40°C or above 60°C must be evaluated against the specific environmental requirements of the system. For applications within the -40°C to 60°C range, no temperature-related limitations apply.

Q: Do both relays include the same features?

A: Yes. Both the PT52ALN4B and 7760056105 include integrated diode and lighted indicator features. Feature parity ensures functional equivalence in applications utilizing these capabilities.

Q: What is the difference in contact material between the two relays?

A: The PT52ALN4B uses Silver Nickel (AgNi) contact material, while the 7760056105 uses Silver Alloy. Both materials are suitable for general purpose relay applications with 250VAC maximum switching voltage. Contact material selection does not affect substitution compatibility for standard switching applications.

Q: Are there any compliance or regulatory differences between the two relays?

A: Both relays maintain REACH Unaffected status and EAR99 ECCN classification. The 7760056105 carries cURus approval agency certification. No regulatory barriers exist to substitution. The additional certification on the 7760056105 provides supplementary validation for applications requiring third-party approval documentation.

Q: What is the packaging difference between the PT52ALN4B and 7760056105?

A: The PT52ALN4B is supplied in standard packaging, while the 7760056105 is supplied in bulk packaging. Both are socketable relays with plug-in termination suitable for identical mounting applications. Packaging format does not affect electrical or mechanical compatibility.

Q: Can the 7760056105 be used in applications where the PT52ALN4B was previously specified?

A: Yes. The 7760056105 meets all electrical and mechanical requirements of the PT52ALN4B specification. Applications previously designed for the PT52ALN4B operate identically with the 7760056105 without circuit or installation modifications, provided operating temperature requirements fall within -40°C to 60°C.