H12WD4890-10 Solid State Relay SPST-NO 90A 48-660V

Part Overview

The H12WD4890-10 is a solid state relay (SSR) manufactured by Sensata-Crydom, configured as a single-pole single-throw normally open (SPST-NO) device rated for 90A load current at 48-660V AC output. The device features a hockey puck form factor with screw terminal connections and is designed for chassis mount applications. This part is currently active in production with 775 units in stock. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and regulatory compliance to support procurement flexibility and supply chain continuity.

Substiute Parts

H12WD4890-10

Sensata-CrydomIn Stock: 847H12WD4890-10 Datasheet

Current PartRFQ

84134340

Sensata-CrydomIn Stock: 86484134340 Datasheet

MFR RecommendedRFQ

84138150N

CrouzetIn Stock: 93184138150N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the H12WD4890-10 are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Circuit configuration: SPST-NO (1 Form A)
• Output type: AC
• Input voltage range: 4 ~ 32VDC
• Package form factor: Hockey Puck
• Termination style: Screw Terminal
• Mounting type: Chassis Mount
• RoHS compliance status

Acceptable Parameter Variations:

• Load current rating: Equal to or greater than 90A
• Load voltage range: Must encompass or exceed 48-660V specification
• Manufacturer: Alternative qualified manufacturers permitted
• Series designation: May differ from H12WD series

Two substitute parts meet these criteria: 84134340 (Sensata-Crydom, 100A rating) and 84138150N (Crouzet, 90A rating with zero-cross feature).

Parameter Comparison

Engineering Selection Recommendations

84134340 (Sensata-Crydom): This substitute maintains identical input and load voltage specifications (4-32VDC input, 48-660V load) while providing a higher load current rating of 100A versus the original 90A. Both parts are manufactured by Sensata-Crydom, share the same series lineage, and carry equivalent RoHS compliance. This part is suitable for direct substitution where higher current capacity is acceptable or beneficial.

84138150N (Crouzet): This substitute matches the 90A load current rating and input voltage specification (4-32VDC) but operates within a reduced load voltage range of 24-500V compared to the original 48-660V specification. The part includes zero-cross switching functionality and is manufactured by Crouzet under the GN+ series. This part is suitable for substitution only in applications where the load voltage requirement does not exceed 500V. RoHS compliance and active product status are confirmed.

Both substitute parts maintain the same circuit configuration, output type, package form factor, termination style, and mounting type as the original H12WD4890-10, ensuring mechanical and electrical compatibility within their respective voltage and current operating ranges.

Frequently Asked Questions (FAQ)

Q: Can 84134340 be used as a direct replacement for H12WD4890-10?

A: Yes. The 84134340 maintains identical input voltage (4-32VDC), load voltage range (48-660V), and circuit configuration (SPST-NO). The higher current rating (100A vs. 90A) does not prevent substitution. Both parts share the same hockey puck package, screw terminal connections, and chassis mount configuration.

Q: What is the key limitation of 84138150N as a substitute?

A: The 84138150N operates at a reduced load voltage range of 24-500V compared to the original 48-660V specification. This part is suitable only for applications where the load voltage does not exceed 500V. The 90A current rating and input voltage specification (4-32VDC) match the original part.

Q: Are all three parts RoHS compliant?

A: Yes. The H12WD4890-10, 84134340, and 84138150N are all RoHS compliant and carry active product status.

Q: Do the substitute parts use the same package and termination?

A: Yes. All three parts use the hockey puck form factor with screw terminal connections and are configured for chassis mount applications.

Q: What does zero-cross switching mean on the 84138150N?

A: Zero-cross switching is a feature that synchronizes relay switching with the AC voltage waveform zero crossing point. This is a functional characteristic of the 84138150N and does not affect mechanical or electrical compatibility for standard SPST-NO applications.