CWD4825H Equivalent & Substitute Parts

Part Overview

The CWD4825H is a solid-state relay (SSR) manufactured by Sensata-Crydom, classified as SPST-NO (1 Form A) in a hockey puck package. This component is designed for AC load switching applications with zero-cross detection, operating from 4–32VDC input control voltage and supporting loads up to 25A at 48–660V. The part is currently active in production and RoHS compliant, making it suitable for industrial control and switching applications where mechanical relay alternatives are not preferred.

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility is required while maintaining functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

CWD4825H

Sensata-CrydomIn Stock: 1003CWD4825H Datasheet

Current PartRFQ

84138010N

CrouzetIn Stock: 86484138010N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CWD4825H is determined by the following critical parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A) to maintain identical switching logic
• Output Type: Must support AC with zero-cross detection for synchronized switching
• Load Current Rating: Must be rated for 25A minimum
• Input Control Voltage: Must accept 4–32VDC control signal
• Package / Case: Must be hockey puck form factor for mechanical compatibility
• Termination Style: Must use screw terminal connections
• Mounting Type: Must support chassis mount installation

The substitute part 84138010N (Crouzet GN+ series) meets these core functional requirements. However, the load voltage range differs: the substitute supports 12–270V versus the main part's 48–660V range. This difference restricts the substitute to applications within the 12–270V envelope and disqualifies it for higher-voltage applications requiring the full 48–660V capability of the CWD4825H.

Parameter Comparison

Engineering Selection Recommendations

Both the CWD4825H and 84138010N are active production components with RoHS compliance and equivalent regulatory status (ECCN: EAR99). Selection between these parts must be based on load voltage requirements:

• CWD4825H: Select for applications requiring load voltages from 48V to 660V. This part provides the extended voltage range necessary for high-voltage industrial switching applications.

• 84138010N: Select only for applications where the load voltage remains within the 12–270V range. This substitute is suitable for lower-voltage control circuits and industrial applications operating below 270V.

Both parts share identical input control voltage (4–32VDC), load current (25A), circuit configuration (SPST-NO), output type (AC, zero-cross), and mechanical form factor (hockey puck, screw terminal, chassis mount). The voltage range difference is the sole technical differentiator and must be the primary selection criterion.

Frequently Asked Questions (FAQ)

Q: Can the 84138010N replace the CWD4825H in all applications?

A: No. The 84138010N is limited to load voltages between 12–270V, while the CWD4825H supports 48–660V. The substitute is only compatible with applications operating within the 12–270V range. Applications requiring voltages above 270V or below 48V must use the CWD4825H.

Q: Are the input control voltage requirements identical?

A: Yes. Both parts accept 4–32VDC input control voltage and are functionally equivalent in this parameter.

Q: Do both parts support the same load current?

A: Yes. Both the CWD4825H and 84138010N are rated for 25A load current.

Q: Are the mechanical packages interchangeable?

A: Yes. Both parts use the hockey puck form factor with screw terminal connections and chassis mount installation, ensuring mechanical compatibility in the same mounting location.

Q: What is the significance of the zero-cross output type?

A: Zero-cross detection ensures the SSR switches at the AC voltage zero-crossing point, minimizing electromagnetic interference and reducing inrush current. Both parts incorporate this feature.

Q: Are there RoHS compliance differences?

A: No. Both the CWD4825H and 84138010N are RoHS compliant and meet equivalent environmental standards.

Q: Which part should be selected for a 400V AC load application?

A: The CWD4825H must be selected, as the 84138010N's maximum load voltage is 270V, which is insufficient for 400V operation.