CSW2425 Solid State Relay - Equivalent & Substitute Parts

Part Overview

The CSW2425 is a solid state relay (SSR) manufactured by Sensata-Crydom, configured as a SPST-NO (Single Pole Single Throw - Normally Open) device with 25A load capacity and 24-280V output voltage range. This component operates with 3-32VDC input control voltage and features zero-cross switching for AC loads. The CSW2425 is classified as Last Time Buy, indicating discontinued production status. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications currently utilizing this component.

Key Parameters

Parameter	Value
Circuit Configuration	SPST-NO (1 Form A)
Load Current Rating	25 A
Output Voltage Range	24 V ~ 280 V
Input Control Voltage	3 ~ 32 VDC
Output Type	AC, Zero Cross
Mounting Type	Chassis Mount
Package Type	Hockey Puck
Termination Style	Screw Terminal

Substitute Part Grouping Explanation

Substitute parts for the CSW2425 are qualified based on the following critical parameters that must remain constant or compatible:

Circuit configuration must be SPST-NO (1 Form A)
Load current rating must be 25 A
Output voltage range must encompass or match 24-280V
Input control voltage must be compatible with 3-32VDC or higher minimum threshold
Output type must be AC with zero-cross switching capability
Package type must be Hockey Puck
Mounting type must be Chassis Mount
Termination must be Screw Terminal

Three substitute parts meet these criteria: D2425 (Sensata-Crydom), 84137010N (Crouzet), and ASR-SI240D25ZW-L (Altran Magnetics, LLC).

Parameter Comparison

Parameter	CSW2425	D2425	84137010N	ASR-SI240D25ZW-L
Manufacturer	Sensata-Crydom	Sensata-Crydom	Crouzet	Altran Magnetics, LLC
Circuit Configuration	SPST-NO (1 Form A)	SPST-NO (1 Form A)	SPST-NO (1 Form A)	SPST-NO (1 Form A)
Load Current Rating	25 A	25 A	25 A	25 A
Output Voltage Range	24 V ~ 280 V	24 V ~ 280 V	24 V ~ 280 V	48 V ~ 280 V
Input Control Voltage	3 ~ 32 VDC	3 ~ 32 VDC	4 ~ 32 VDC	4 ~ 32 VDC
Output Type	AC, Zero Cross	AC, Zero Cross	AC, Zero Cross	AC, Zero Cross
Mounting Type	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount
Package Type	Hockey Puck	Hockey Puck	Hockey Puck	Hockey Puck
Termination Style	Screw Terminal	Screw Terminal	Screw Terminal	Screw Terminal
Product Status	Last Time Buy	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant
REACH Status	REACH Affected	REACH Affected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

D2425 (Sensata-Crydom) is the primary direct substitute. It is manufactured by the same supplier as the CSW2425, maintains identical electrical specifications including input voltage range (3-32VDC) and output voltage range (24-280V), and carries Active product status. Both components are ROHS3 Compliant and REACH Affected. This part provides the highest compatibility with existing designs.

84137010N (Crouzet) is a qualified alternative with Active product status. It maintains the required 25A load current and 24-280V output voltage range. The input control voltage minimum threshold is 4VDC (versus 3VDC for CSW2425), which is compatible with standard control circuits. This component is RoHS Compliant and REACH Unaffected, offering regulatory advantages in certain supply chain contexts.

ASR-SI240D25ZW-L (Altran Magnetics, LLC) is a qualified alternative with Active product status and ROHS3 Compliance. The output voltage range begins at 48V (versus 24V for CSW2425). This part is suitable only for applications where the minimum load voltage is 48V or higher. The input control voltage minimum is 4VDC. This component is REACH Unaffected.

Frequently Asked Questions (FAQ)

Q: Can D2425 be used as a direct replacement for CSW2425?

A: Yes. D2425 maintains identical electrical specifications across all critical parameters: 25A load current, 24-280V output voltage range, 3-32VDC input control voltage, SPST-NO configuration, AC zero-cross output type, Hockey Puck package, and Screw Terminal termination. Both are manufactured by Sensata-Crydom.

Q: What is the key difference between 84137010N and CSW2425?

A: The input control voltage minimum threshold differs: 84137010N requires 4VDC minimum (versus 3VDC for CSW2425). All other electrical and mechanical parameters are identical. The component is manufactured by Crouzet and carries different regulatory status (REACH Unaffected versus REACH Affected).

Q: Can ASR-SI240D25ZW-L replace CSW2425 in all applications?

A: No. ASR-SI240D25ZW-L has a minimum output voltage of 48V, whereas CSW2425 operates from 24V. This part is suitable only for applications where the load voltage is 48V or higher. All other parameters including 25A load current, input control voltage (4-32VDC), and package type are compatible.

Q: Are all substitute parts available in the same packaging format?

A: D2425 and 84137010N are supplied in Bulk and Box packaging respectively. ASR-SI240D25ZW-L is supplied in Box packaging. All three maintain the Hockey Puck physical package type required for Chassis Mount applications with Screw Terminal connections.

Q: What regulatory compliance should be considered when selecting a substitute?

A: CSW2425 and D2425 are both ROHS3 Compliant and REACH Affected. 84137010N and ASR-SI240D25ZW-L are REACH Unaffected. Selection should align with end-product regulatory requirements and supply chain compliance obligations.

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