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

Part Overview

The H12WD4890 is a solid state relay (SSR) with SPST-NO (1 Form A) configuration, rated for 90A load current at 48-660V AC output. This chassis-mount hockey puck package device operates with 4-32VDC input control voltage and features zero-cross switching for AC loads. The part is currently active in production with ROHS3 compliance and REACH affected status. Equivalent and substitute parts may be required due to inventory availability, application-specific load current requirements, or voltage range specifications that differ from the original design parameters.

Substiute Parts

H12WD4890

Sensata-CrydomIn Stock: 910H12WD4890 Datasheet

Current PartRFQ

84134140

Sensata-CrydomIn Stock: 112284134140 Datasheet

MFR RecommendedRFQ

84137140N

CrouzetIn Stock: 69284137140N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the H12WD4890 is determined by the following critical parameters:

• Circuit configuration must remain SPST-NO (1 Form A)
• Output type must be AC with zero-cross switching capability
• Input voltage range must accommodate 4-32VDC control signals
• Package must be hockey puck with screw terminal termination
• Mounting type must be chassis mount
• Load current rating must equal or exceed 90A
• Load voltage range must encompass or exceed 48-660V specification

The substitute parts listed below meet these criteria with variations in load current capacity and output voltage ranges. Both substitutes maintain identical input control voltage, circuit topology, output switching characteristics, and physical packaging requirements.

Parameter Comparison

Engineering Selection Recommendations

Part 84134140 (Sensata-Crydom GN series) is a direct functional equivalent with increased load current capacity of 100A versus the original 90A specification. This part maintains identical voltage ratings (48-660V load, 4-32VDC input), circuit topology, and physical packaging. ROHS3 compliance and REACH affected status align with the original part specifications.

Part 84137140N (Crouzet GN series) provides substitution capability with the same 100A load current rating and identical control voltage range. However, the load voltage range is restricted to 20-265V, which does not encompass the full 48-660V specification of the original part. This substitute is suitable only for applications operating within the 20-265V load voltage window. RoHS compliance is maintained, though REACH status differs from the original part.

Selection between substitutes depends on application load voltage requirements. For systems requiring the full 48-660V load voltage range, part 84134140 is the appropriate selection. For applications limited to 20-265V operation, part 84137140N is acceptable.

Frequently Asked Questions (FAQ)

Q: Can 84134140 be used as a direct replacement for H12WD4890?

A: Yes. Part 84134140 maintains all critical parameters including SPST-NO circuit configuration, AC zero-cross output type, 4-32VDC input voltage, 48-660V load voltage range, hockey puck package, and screw terminal termination. The increased 100A load current rating provides additional capacity margin.

Q: What is the key limitation of 84137140N as a substitute?

A: The load voltage range of 84137140N is limited to 20-265V, compared to the original 48-660V specification. This part is suitable only for applications operating within this reduced voltage window. If your system requires operation above 265V or below 20V, this substitute is not compatible.

Q: Are all three parts compatible with the same control circuit?

A: Yes. All three parts accept 4-32VDC input control voltage and feature identical SPST-NO switching topology. Control circuit modifications are not required when substituting between these parts.

Q: Does packaging differ between the substitute parts?

A: No. All three parts use hockey puck chassis-mount packages with screw terminal connections. Physical mounting and electrical termination are identical.

Q: What compliance differences exist between the substitutes?

A: H12WD4890 and 84134140 are both ROHS3 compliant with REACH affected status. Part 84137140N is RoHS compliant but REACH unaffected. Verify compliance requirements for your specific application before selection.