H12WD4850PGH Equivalent & Substitute Parts

Part Overview

The H12WD4850PGH is a solid state relay (SSR) manufactured by Sensata-Crydom, classified as a SPST-NO (1 Form A) hockey puck configuration. This component is designed for AC load switching applications with zero-cross detection capability. The part is currently in active production status with 858 units available in inventory. Alternative models may be required due to supply constraints, regional availability, or specific application voltage requirements within compatible parameter ranges.

Substiute Parts

H12WD4850PGH

Sensata-CrydomIn Stock: 926H12WD4850PGH Datasheet

Current PartRFQ

84138120N

CrouzetIn Stock: 95584138120N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the H12WD4850PGH is determined by the following critical parameters:

• Circuit configuration must be SPST-NO (1 Form A)
• Output type must be AC with zero-cross detection
• Input voltage range must accommodate 4 ~ 32 VDC
• Load current rating must be 50 A
• Mounting type must be chassis mount
• Termination style must be screw terminal
• Package must be hockey puck configuration

The substitute part 84138120N (Crouzet GN+ series) meets all these core requirements. The primary difference is the load voltage range: the substitute supports 24 V ~ 500 V compared to the main part's 48 V ~ 660 V. This difference defines the substitution boundary and must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the H12WD4850PGH and 84138120N are active production components with RoHS compliance certification. Selection between these parts is determined by load voltage requirements:

Use the H12WD4850PGH when load voltage exceeds 500 V or when the full 48 V ~ 660 V range is required.

Use the 84138120N (Crouzet) when load voltage operates within the 24 V ~ 500 V range and supply chain or cost considerations favor the Crouzet alternative.

Both components share identical input voltage specifications (4 ~ 32 VDC), load current rating (50 A), circuit configuration (SPST-NO), output type (AC, zero-cross), mounting type (chassis mount), termination style (screw terminal), and package format (hockey puck).

Frequently Asked Questions (FAQ)

Q: Can the 84138120N replace the H12WD4850PGH in all applications?

A: The 84138120N is a direct substitute only when the application load voltage remains within 24 V ~ 500 V. If the application requires load voltages above 500 V or below 24 V, the H12WD4850PGH must be used.

Q: Are the input voltage specifications identical between these parts?

A: Yes. Both the H12WD4850PGH and 84138120N accept input voltage in the range of 4 ~ 32 VDC.

Q: Do both parts support the same load current?

A: Yes. Both components are rated for 50 A load current.

Q: Are the physical packages compatible?

A: Yes. Both parts use the hockey puck chassis mount configuration with screw terminal termination, allowing direct mechanical substitution when electrical parameters are compatible.

Q: What is the primary difference between these two SSR relays?

A: The primary difference is the maximum load voltage rating. The H12WD4850PGH supports up to 660 V, while the 84138120N supports up to 500 V. The minimum load voltage also differs: 48 V for the H12WD4850PGH versus 24 V for the 84138120N.

Q: Are both parts RoHS compliant?

A: Yes. Both the H12WD4850PGH and 84138120N meet RoHS compliance requirements.