CSW2450 Solid State Relay - Equivalent & Substitute Parts

Part Overview

The CSW2450 is a solid state relay (SSR) manufactured by Sensata-Crydom, classified as a SPST-NO (Single Pole Single Throw - Normally Open) device with a 50A load capacity and 24-280V output voltage range. This component operates with a 3-32VDC input and features zero-cross switching for AC loads. The CSW2450 is designated as Last Time Buy, indicating discontinued production status. Identifying equivalent and substitute parts is necessary to ensure continued availability for maintenance, repair, and new design implementations.

Substiute Parts

CSW2450

Sensata-CrydomIn Stock: 870CSW2450 Datasheet

Current PartRFQ

D2450

Sensata-CrydomIn Stock: 1058D2450 Datasheet

DirectRFQ

84137460N

CrouzetIn Stock: 99884137460N Datasheet

MFR RecommendedRFQ

ASR-SN240D60ZW-L

Altran Magnetics, LLCIn Stock: 744ASR-SN240D60ZW-L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CSW2450 is determined by the following critical parameters:

• Circuit configuration must be SPST-NO (1 Form A)
• Output type must be AC with zero-cross switching capability
• Input voltage range must accommodate 3-32VDC
• Load current rating must be equal to or greater than 50A
• Load voltage range must encompass or exceed 24-280V
• Mounting type must be Chassis Mount
• Termination style must be Screw Terminal
• Package form factor must be compatible with Hockey Puck or equivalent mechanical envelope

Based on these criteria, the following parts are identified as substitutes:

Direct Substitute (Sensata-Crydom D2450): Identical electrical specifications and mechanical form factor. Active product status provides long-term availability.

Cross-Manufacturer Substitute (Crouzet 84137460N): Meets core electrical requirements with extended load voltage range (48-660V). Different package designation (Box) requires mechanical verification.

Extended-Capacity Substitute (Altran Magnetics ASR-SN240D60ZW-L): Provides higher load current rating (60A) with compatible input voltage. Load voltage specification (24V) represents a constraint relative to the original 24-280V range. Module form factor differs from Hockey Puck.

Parameter Comparison

Engineering Selection Recommendations

D2450 (Sensata-Crydom): This part is the primary substitute for the CSW2450. It maintains identical electrical and mechanical specifications while offering Active product status, ensuring long-term supply chain availability. Both parts are ROHS3 compliant and share the same series lineage within Sensata-Crydom's product portfolio. This substitution requires no design modifications.

84137460N (Crouzet): This part satisfies all core electrical requirements with an extended load voltage range (48-660V), providing additional operational margin in high-voltage applications. The input voltage minimum is 4VDC rather than 3VDC, which may be a constraint in low-voltage control circuits. The packaging is designated as Box rather than Hockey Puck, requiring mechanical envelope verification before implementation. RoHS compliance status differs (RoHS Compliant vs. ROHS3 Compliant). This substitution is suitable for applications where the extended voltage range provides design benefit.

ASR-SN240D60ZW-L (Altran Magnetics): This part offers increased load current capacity (60A vs. 50A) but operates with a restricted load voltage range (24V fixed output). This specification represents a significant departure from the original 24-280V range and limits applicability to fixed 24V AC load circuits only. The Module form factor differs from Hockey Puck, requiring mechanical redesign. This substitution is applicable only in applications where the load voltage is fixed at 24V AC and the higher current rating provides system benefit.

Frequently Asked Questions (FAQ)

Q: Can the D2450 be used as a direct replacement for the CSW2450 without any modifications?

A: Yes. The D2450 is electrically and mechanically identical to the CSW2450. Both parts share the same input voltage range (3-32VDC), load voltage range (24-280V), current rating (50A), circuit configuration (SPST-NO), and Hockey Puck form factor. No design or layout modifications are required.

Q: What are the key differences between the CSW2450 and the Crouzet 84137460N?

A: The primary difference is the load voltage range. The 84137460N operates from 48-660V, compared to the CSW2450's 24-280V range. The input voltage minimum is also slightly higher (4VDC vs. 3VDC). Both maintain 50A load current and SPST-NO configuration. The packaging designation differs (Box vs. Hockey Puck), requiring mechanical verification. The 84137460N is suitable for applications requiring higher voltage operation.

Q: Why is the Altran Magnetics ASR-SN240D60ZW-L listed as a substitute if its load voltage is only 24V?

A: The ASR-SN240D60ZW-L is included as a substitute option for applications where the load is fixed at 24V AC and the higher current capacity (60A) provides system benefit. This part is not suitable for applications requiring variable load voltages across the 24-280V range. The Module form factor also differs from the Hockey Puck, requiring mechanical redesign.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts meet RoHS requirements. The CSW2450 and D2450 are ROHS3 compliant. The Crouzet 84137460N is RoHS compliant. The Altran Magnetics ASR-SN240D60ZW-L is ROHS3 compliant. All parts are suitable for applications with RoHS compliance requirements.

Q: What should I consider when selecting between these substitutes?

A: Selection depends on application requirements. For direct replacement with no design changes, use the D2450. For applications requiring extended load voltage capability (48-660V), use the 84137460N with mechanical verification. For fixed 24V AC loads requiring higher current capacity, use the ASR-SN240D60ZW-L with mechanical redesign. Product status (Active vs. Last Time Buy) should also be considered for long-term supply chain planning.

Q: Can these parts be used interchangeably in existing designs?

A: The D2450 can be used interchangeably with the CSW2450 without modifications. The 84137460N and ASR-SN240D60ZW-L require application-specific evaluation due to differences in load voltage range and form factor. Mechanical envelope compatibility must be verified before implementation in existing designs.