CWU4850-10 Equivalent & Substitute Parts

Part Overview

The CWU4850-10 is a solid state relay (SSR) manufactured by Sensata Technologies, configured as a single-pole single-throw normally open (SPST-NO) device rated for 50A load current. This active product operates with AC output and supports input voltages from 20–280VAC or 20–48VDC, with load voltage capability spanning 48–660V. The hockey puck form factor with screw terminal connections is designed for chassis mount applications. Equivalent parts are identified when they maintain functional compatibility across critical electrical parameters and mechanical form factor requirements.

Substiute Parts

CWU4850-10

Sensata TechnologiesIn Stock: 742CWU4850-10 Datasheet

Current PartRFQ

84138123N

CrouzetIn Stock: 108984138123N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CWU4850-10 is determined by the following critical parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A) to maintain identical switching topology
• Load Current Rating: Must be rated for 50A minimum to handle specified load requirements
• Package Type: Must be hockey puck form factor to ensure mechanical compatibility with existing mounting infrastructure
• Termination Style: Must use screw terminal connections for direct connection compatibility
• Mounting Type: Must support chassis mount orientation
• RoHS Compliance: Must maintain RoHS compliance status for regulatory consistency

The substitute part 84138123N (Crouzet GN+ series) meets these core substitution criteria while operating within compatible electrical ranges.

Parameter Comparison

Engineering Selection Recommendations

The 84138123N (Crouzet GN+ series) is an active, RoHS-compliant substitute for the CWU4850-10. Both devices maintain identical circuit topology, load current rating, package form factor, and termination methodology. The Crouzet part incorporates zero-cross switching functionality in its AC output stage, which provides additional operational characteristics without compromising baseline substitution compatibility.

The primary electrical difference is the load voltage range: the CWU4850-10 supports 48–660V, while the 84138123N supports 24–500V. Applications requiring load voltages exceeding 500V are outside the operating envelope of the Crouzet substitute and require retention of the original Sensata part.

Both parts carry identical ECCN (EAR99) and HTSUS (8536.49.0080) classifications, confirming regulatory alignment for trade and export purposes.

Frequently Asked Questions (FAQ)

Q: Can the 84138123N replace the CWU4850-10 in all applications?

A: The 84138123N is mechanically and electrically compatible for applications where the load voltage does not exceed 500V. The CWU4850-10 supports load voltages up to 660V, which exceeds the Crouzet substitute's rating. Verify your application's load voltage requirement before substitution.

Q: Are the input voltage ranges compatible between these parts?

A: Yes. The CWU4850-10 accepts 20–280VAC or 20–48VDC input. The 84138123N accepts 20–260VAC/DC input. Both ranges overlap sufficiently for standard control circuit applications operating within 20–260V.

Q: What is the significance of zero-cross switching in the Crouzet part?

A: Zero-cross switching is a control feature that synchronizes relay activation with the AC voltage waveform zero-crossing point. This reduces electromagnetic interference and switching transients. It does not affect the fundamental substitution compatibility but may alter switching behavior in sensitive applications.

Q: Are the physical dimensions and mounting footprints identical?

A: Both parts use the hockey puck package type with chassis mount orientation and screw terminal connections. The provided specifications confirm mechanical compatibility. Consult detailed mechanical drawings if precise dimensional verification is required for your application.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the CWU4850-10 and 84138123N are RoHS compliant and carry identical ECCN and HTSUS classifications, confirming regulatory alignment for procurement and deployment.