H12WD48125G Equivalent & Substitute Parts

Part Overview

The H12WD48125G is a solid-state relay (SSR) manufactured by Sensata-Crydom, configured as a SPST-NO (1 Form A) device in a hockey puck package. This component is designed for AC load switching applications with zero-cross detection, operating with a 4–32VDC control input and supporting loads up to 125A at 48–660V. The part is currently active in production and RoHS compliant. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and compliance certifications align with the original specification.

Substiute Parts

H12WD48125G

Sensata-CrydomIn Stock: 1173H12WD48125G Datasheet

Current PartRFQ

84137180N

CrouzetIn Stock: 121884137180N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the H12WD48125G are identified based on functional equivalence across the following critical parameters:

• Circuit Configuration: SPST-NO (1 Form A) topology
• Output Characteristics: AC switching with zero-cross detection
• Electrical Ratings: 4–32VDC input, 48–660V load voltage, 125A current capacity
• Mechanical Form Factor: Hockey puck package with chassis mount configuration
• Termination: Screw terminal interface
• Compliance: RoHS compliant status and MSL rating

The substitute part 84137180N (Crouzet GN series) meets all these criteria, enabling direct functional replacement in applications requiring equivalent AC load switching performance.

Parameter Comparison

Engineering Selection Recommendations

Both the H12WD48125G and 84137180N are active production components with identical electrical ratings, mechanical configurations, and compliance certifications. Selection between these parts is based on availability, lead time, and supply chain requirements rather than technical performance differences. Both devices are RoHS compliant with MSL 1 rating, suitable for standard industrial AC switching applications. The Crouzet 84137180N is designated as the manufacturer-recommended substitute for the Sensata-Crydom H12WD48125G.

Frequently Asked Questions (FAQ)

Q: Can the Crouzet 84137180N directly replace the Sensata-Crydom H12WD48125G?

A: Yes. Both parts share identical electrical specifications (4–32VDC input, 48–660V load voltage, 125A capacity), circuit configuration (SPST-NO with zero-cross AC output), mechanical form factor (hockey puck chassis mount), and termination style (screw terminal). RoHS compliance and MSL ratings are equivalent.

Q: Are there differences in package dimensions or mounting footprint?

A: Both parts use the hockey puck package with chassis mount configuration. No dimensional data was provided in the specification; physical verification is required if space constraints are critical to the application.

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

A: Zero-cross detection ensures the relay switches at the AC voltage zero-crossing point, minimizing electromagnetic interference and reducing stress on connected loads. Both substitute parts incorporate this feature.

Q: Do both parts support the full 4–32VDC control voltage range?

A: Yes. Both the H12WD48125G and 84137180N operate across the complete 4–32VDC input range with identical performance characteristics.

Q: Are there compliance or certification differences between the two parts?

A: Both parts are RoHS compliant with MSL 1 (Unlimited) rating. The Crouzet part includes REACH Unaffected status. No other compliance differences are specified.