PJR24AD Impulse Relay - Equivalent & Substitute Parts

Part Overview

The PJR24AD is a socketable impulse relay manufactured by Crouzet, featuring a single coil latching design with SPDT (1 Form C) contact configuration. This component is rated for 10A at 24VAC/DC coil voltage with a maximum switching capacity of 250VAC/250VDC. The part is classified as obsolete, making identification of compatible substitutes essential for ongoing system maintenance and new design implementations where this relay type is specified.

Substiute Parts

PJR24AD

CrouzetIn Stock: 1170PJR24AD Datasheet

Current PartRFQ

PJRS110A

CrouzetIn Stock: 949PJRS110A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PJR24AD is constrained by the following critical parameters that must remain consistent:

• Relay Type: Must be impulse relay with latching, single coil design
• Contact Configuration: SPDT (1 Form C) contact form required
• Contact Rating: 10A minimum current capacity
• Switching Voltage: 250VAC/250VDC maximum switching capability
• Mounting Interface: Socketable design with 8 Pin (Octal) plug-in termination
• Contact Material: Silver Cadmium Oxide (AgCdO) composition
• Operating Temperature: -10°C ~ 60°C range
• Compliance: RoHS compliant status

The PJRS110A is identified as a substitute part within the Crouzet impulse relay product family. While this part maintains identical contact form, current rating, switching voltage, mounting type, termination style, contact material, and operating temperature specifications, it differs in coil voltage specification (110VAC versus 24VAC/DC). This difference requires explicit circuit voltage compatibility verification during selection.

Parameter Comparison

Engineering Selection Recommendations

The PJRS110A serves as a functional substitute for the obsolete PJR24AD within applications where coil voltage compatibility can be accommodated. Both parts maintain identical contact switching characteristics, current capacity, and mechanical interface specifications. The PJRS110A holds active product status with RoHS compliance certification, providing supply continuity for impulse relay applications requiring SPDT switching at 10A capacity.

Selection of the PJRS110A requires verification that the application circuit supplies 110VAC coil voltage. The substitute part is not suitable for direct replacement in circuits designed for 24VAC/DC coil excitation without corresponding power supply modification.

Frequently Asked Questions (FAQ)

Q: Can the PJRS110A directly replace the PJR24AD in existing equipment?

A: Direct mechanical replacement is possible due to identical 8 Pin (Octal) socketable mounting. However, the coil voltage difference (110VAC versus 24VAC/DC) requires the application circuit to supply 110VAC to the relay coil. If the original circuit provides 24VAC/DC, the PJRS110A will not operate without power supply modification.

Q: Are the contact switching specifications identical between these parts?

A: Yes. Both parts feature SPDT (1 Form C) contact configuration, 10A current rating, 250VAC/250VDC maximum switching voltage, and Silver Cadmium Oxide contact material. Contact switching performance is equivalent.

Q: What is the significance of the obsolete status for the PJR24AD?

A: Obsolete status indicates the PJR24AD is no longer manufactured by Crouzet. The PJRS110A, with active product status, represents the current equivalent within the Crouzet impulse relay product line, ensuring ongoing availability for new designs and system maintenance.

Q: Are both parts RoHS compliant?

A: Yes. Both the PJR24AD and PJRS110A meet RoHS compliance requirements, suitable for applications subject to RoHS regulations.

Q: What is the difference in product status between these parts?

A: The PJR24AD is classified as obsolete, while the PJRS110A maintains active product status. Active status indicates current manufacturing and availability through Crouzet distribution channels.