CWA2450P Equivalent & Substitute Parts

Part Overview

The CWA2450P is a solid-state relay (SSR) manufactured by Sensata-Crydom, classified as SPST-NO (1 Form A) with a hockey puck form factor. This component is designed for AC load switching applications with a 50A capacity and operates across input voltages of 90–280VAC and load voltages of 24–280V. The part is currently active in production and RoHS compliant, making it suitable for modern industrial control and switching applications where mechanical relay alternatives are insufficient.

Equivalent and substitute parts are identified when they share the same functional circuit topology (SPST-NO), output type (AC with zero-cross switching), load current rating (50A), compatible termination style (screw terminal), and package form factor (hockey puck). Substitutes must maintain compatibility within the specified voltage ranges and operational parameters.

Substiute Parts

CWA2450P

Sensata-CrydomIn Stock: 859CWA2450P Datasheet

Current PartRFQ

84137121N

CrouzetIn Stock: 101484137121N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CWA2450P are identified based on the following critical parameters that determine functional interchangeability:

• Circuit Configuration: SPST-NO (1 Form A) topology
• Output Switching Type: AC with zero-cross detection
• Load Current Rating: 50A nominal capacity
• Termination Interface: Screw terminal connection
• Physical Form Factor: Hockey puck package for chassis mounting
• Voltage Compatibility: Input and load voltage ranges that overlap or exceed the original specification

The substitute part 84137121N (Crouzet, GN series) meets these criteria with compatible electrical characteristics and identical mechanical packaging, enabling direct functional replacement in applications where the CWA2450P is specified.

Parameter Comparison

Engineering Selection Recommendations

Both the CWA2450P and 84137121N are active production components with RoHS compliance and identical ECCN/HTSUS classifications, confirming regulatory alignment for industrial applications. The selection between these parts depends on specific application voltage requirements:

• CWA2450P: Suitable for applications with input voltage requirements between 90–280VAC and load voltages between 24–280V.
• 84137121N: Suitable for applications with input voltage requirements between 20–265VAC and load voltages between 48–660V. The extended load voltage range (up to 660V) accommodates higher-voltage switching applications.

Both components share identical circuit topology, output switching characteristics, current rating, termination style, and physical packaging. Selection should be based on the specific input and load voltage requirements of the target application.

Frequently Asked Questions (FAQ)

Q: Can the 84137121N directly replace the CWA2450P in all applications?

A: Direct replacement is possible only when the application's input voltage falls within 20–265VAC and load voltage falls within 48–660V. The CWA2450P supports input voltages down to 90VAC; applications requiring lower input voltages must retain the original part.

Q: What are the key compatibility factors for SSR substitution?

A: Circuit type (SPST-NO), output switching method (AC zero-cross), load current rating (50A), termination interface (screw terminal), and physical package (hockey puck) must be identical. Voltage ranges must be compatible with the application requirements.

Q: Are there packaging differences between these parts?

A: Both parts use hockey puck form factor with screw terminal connections and chassis mount configuration. Packaging format differs (CWA2450P: Bulk; 84137121N: Box), but this does not affect functional compatibility.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both parts are RoHS compliant, classified under ECCN EAR99, and assigned HTSUS code 8536.49.0080, confirming equivalent regulatory status for industrial control applications.

Q: What is the significance of zero-cross switching in these relays?

A: Zero-cross switching synchronizes relay activation with AC voltage zero-crossing points, reducing electromagnetic interference and extending load component life by minimizing inrush current stress.