HA4875H Solid State Relay - Equivalent & Substitute Parts

Part Overview

The HA4875H is an active Solid State Relay (SSR) manufactured by Sensata-Crydom, configured as a SPST-NO (1 Form A) device in a Hockey Puck package. This component functions as an electronic switch for AC load control with zero-crossing capability, designed for chassis mount applications requiring high current switching at industrial voltage levels. The part is RoHS compliant and maintains unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges.

Substiute Parts

HA4875H

Sensata-CrydomIn Stock: 914HA4875H Datasheet

Current PartRFQ

84138153N

CrouzetIn Stock: 92784138153N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HA4875H is determined by strict equivalence across the following critical parameters:

Circuit Configuration: Must be SPST-NO (1 Form A) topology to maintain identical switching behavior.

Output Type: Must support AC switching with zero-crossing detection to ensure compatible control characteristics.

Load Current Rating: Substitute must meet or exceed 75 A continuous current capacity.

Voltage Ranges: Input voltage range must encompass or exceed 90 ~ 280 VAC. Load voltage range must encompass or exceed 48 V ~ 530 V.

Package & Mounting: Must use Hockey Puck form factor with chassis mount configuration and screw terminal termination for mechanical and electrical interface compatibility.

Compliance: Must maintain RoHS compliance and MSL 1 rating.

The part 84138153N (Crouzet GN+ series) qualifies as a substitute based on these criteria.

Parameter Comparison

Engineering Selection Recommendations

Both the HA4875H and 84138153N are active products with RoHS compliance and identical MSL ratings, qualifying them for equivalent application use. The 84138153N provides higher load current capacity (90 A versus 75 A), offering additional margin in high-current switching scenarios. Load voltage range on the 84138153N extends to 500 V (versus 530 V on the HA4875H), which remains suitable for most industrial AC switching applications within standard voltage classes. Input voltage specification on the 84138153N includes DC capability (20 ~ 260 VAC/DC) in addition to AC, providing broader control signal compatibility. Selection between these parts should be based on specific application voltage and current requirements, availability, and supply chain considerations.

Frequently Asked Questions (FAQ)

Q: Can the 84138153N directly replace the HA4875H in existing designs?

A: Yes, provided the application operates within the 84138153N parameter ranges. The Hockey Puck package, screw terminal configuration, and SPST-NO circuit topology are identical. Verify that load voltage does not exceed 500 V and that input control voltage falls within 20 ~ 260 VAC/DC range.

Q: What is the significance of the 90 A rating on the 84138153N versus 75 A on the HA4875H?

A: The 84138153N supports higher continuous load current, providing additional thermal and electrical margin. Applications requiring exactly 75 A or less can use either part; applications approaching or exceeding 75 A benefit from the 84138153N's higher rating.

Q: Are there voltage range limitations when substituting?

A: The 84138153N load voltage maximum is 500 V compared to the HA4875H at 530 V. Applications operating above 500 V require the HA4875H. Input voltage on the 84138153N includes DC capability, expanding control signal options beyond the HA4875H's AC-only specification.

Q: Do packaging and termination differences affect substitution?

A: No. Both parts use identical Hockey Puck form factor, chassis mount configuration, and screw terminal termination, ensuring mechanical and electrical interface compatibility without design modification.

Q: Are both parts compliant with current regulatory requirements?

A: Yes. Both HA4875H and 84138153N are RoHS compliant with MSL 1 (unlimited moisture sensitivity), meeting current industrial component standards.