CWD4810P Solid State Relay - Equivalent & Substitute Parts

Part Overview

The CWD4810P is an active, RoHS-compliant solid state relay (SSR) manufactured by Sensata-Crydom. It functions as a SPST-NO (1 Form A) switching device with zero-cross AC output capability, designed for chassis mount applications with screw terminal connections. The device operates with a 4–32 VDC input and controls loads between 48–660 V at 10 A maximum current. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when inventory constraints require component alternatives that maintain equivalent electrical and mechanical specifications.

Substiute Parts

CWD4810P

Sensata-CrydomIn Stock: 1142CWD4810P Datasheet

Current PartRFQ

84138010N

CrouzetIn Stock: 86484138010N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CWD4810P are identified based on functional equivalence within the allowed parameter ranges for solid state relays. The primary substitution criteria are:

• Circuit configuration: SPST-NO (1 Form A) topology
• Output type: AC with zero-cross switching capability
• Input voltage range: 4–32 VDC compatibility
• Package form factor: Hockey Puck chassis mount design
• Termination method: Screw terminal connections
• Compliance status: RoHS compliance

The substitute part 84138010N (Crouzet GN+ series) meets these functional requirements. While the load current rating (25 A) and load voltage range (12–270 V) differ from the CWD4810P, these parameters remain within acceptable substitution boundaries for applications where the CWD4810P specifications are not fully utilized or where higher current capacity provides design margin.

Parameter Comparison

Engineering Selection Recommendations

Both the CWD4810P and 84138010N are active products with RoHS compliance certification, ensuring regulatory alignment for current manufacturing and procurement standards. Selection between these parts should be based on application-specific load voltage and current requirements:

• Use CWD4810P for applications requiring load voltages between 48–660 V at up to 10 A.
• Use 84138010N for applications with load voltages between 12–270 V where current capacity up to 25 A is required or beneficial.

Both devices share identical input voltage specifications (4–32 VDC), circuit topology (SPST-NO), output switching behavior (AC, zero-cross), and physical form factor (Hockey Puck, screw terminal, chassis mount). Substitution is valid when application load parameters fall within the operating range of the selected alternative.

Frequently Asked Questions (FAQ)

Q: Can the 84138010N replace the CWD4810P in all applications?

A: Substitution is valid only when the application load voltage remains within 12–270 V and the required current does not exceed 25 A. If the application requires load voltages above 270 V or operates at the upper end of the CWD4810P's 48–660 V range, the 84138010N is not suitable.

Q: What are the key compatibility factors between these two relays?

A: Both devices share SPST-NO circuit topology, AC zero-cross output switching, 4–32 VDC input voltage range, Hockey Puck package form factor, screw terminal connections, and chassis mount configuration. These parameters ensure mechanical and electrical interface compatibility.

Q: Are there any compliance or certification differences between these parts?

A: Both the CWD4810P and 84138010N are RoHS-compliant active products. The CWD4810P carries ECCN EAR99 and HTSUS 8536.49.0080 classifications. The 84138010N carries ECCN EAR99 and HTSUS 8536.41.0060 classifications. Both are suitable for current regulatory environments.

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

A: Zero-cross switching ensures the relay activates or deactivates only when the AC voltage waveform crosses zero, reducing electromagnetic interference and extending load life by minimizing inrush current stress.

Q: How do the load current ratings affect substitution decisions?

A: The CWD4810P is rated for 10 A maximum load current, while the 84138010N is rated for 25 A. The 84138010N can handle higher current loads, but substitution requires verification that the application load current does not exceed the CWD4810P's 10 A specification if reverse substitution (using CWD4810P for 84138010N applications) is considered.