H12WD4825 Solid State Relay SPST-NO 25A 48-660V

Part Overview

The H12WD4825 is a solid state relay (SSR) manufactured by Sensata-Crydom, configured as a single-pole single-throw normally open (SPST-NO) device with a 25A load current rating and 48V to 660V output voltage range. This hockey puck-style relay operates with 4-32VDC input control voltage and features zero-cross AC output switching. The part is currently active in production and RoHS compliant. Equivalent and substitute parts are identified when inventory constraints, supply chain disruptions, or application-specific requirements necessitate alternative sourcing while maintaining identical electrical and mechanical specifications.

Substiute Parts

H12WD4825

Sensata-CrydomIn Stock: 704H12WD4825 Datasheet

Current PartRFQ

84137110N

CrouzetIn Stock: 110684137110N Datasheet

MFR RecommendedRFQ

ASR-SI600D25ZW-L

Altran Magnetics, LLCIn Stock: 687ASR-SI600D25ZW-L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the H12WD4825 are qualified based on strict electrical and mechanical parameter matching. The following criteria determine substitutability:

Critical Parameters for Substitution:

• Circuit configuration: SPST-NO (1 Form A)
• Output type: AC, Zero Cross
• Input voltage range: 4 ~ 32VDC
• Load voltage range: 48 V ~ 660 V
• Load current rating: 25 A
• Mounting type: Chassis Mount
• Termination style: Screw Terminal
• Package type: Hockey Puck

All identified substitute parts meet these electrical and mechanical requirements, enabling direct functional replacement in applications designed for the H12WD4825.

Parameter Comparison

Engineering Selection Recommendations

All three parts—H12WD4825, 84137110N, and ASR-SI600D25ZW-L—are active production components with full RoHS compliance. The H12WD4825 and 84137110N are both RoHS Compliant, while the ASR-SI600D25ZW-L meets ROHS3 Compliant standards. Selection between these parts should be based on availability, supply chain lead times, and packaging preferences (Bulk versus Box). All parts satisfy identical electrical and mechanical requirements for SPST-NO 25A solid state relay applications operating within 48-660V load voltage ranges.

Frequently Asked Questions (FAQ)

Q: Can the 84137110N (Crouzet) be used as a direct replacement for the H12WD4825?

A: Yes. Both parts share identical electrical specifications (SPST-NO, 4-32VDC input, 48-660V load, 25A current, AC zero-cross output) and mechanical form factor (hockey puck, chassis mount, screw terminal). The primary difference is packaging: H12WD4825 is supplied in Bulk, while 84137110N is supplied in Box.

Q: What is the difference between RoHS Compliant and ROHS3 Compliant?

A: Both designations indicate compliance with Restriction of Hazardous Substances regulations. ROHS3 represents a more recent iteration of the standard. All three parts meet current RoHS requirements and are suitable for applications with RoHS compliance mandates.

Q: Are there any mechanical compatibility issues when substituting these parts?

A: No. All three parts are identical in mounting type (Chassis Mount), termination style (Screw Terminal), and package form factor (Hockey Puck), ensuring mechanical interchangeability in existing designs.

Q: Which part should be selected if inventory is the primary concern?

A: Inventory availability varies by supplier and time. The H12WD4825 has 664 units in stock, 84137110N has 1048 units, and ASR-SI600D25ZW-L has 667 units. Selection should be based on current supplier inventory status and delivery requirements.

Q: Do all parts support the same input and output voltage ranges?

A: Yes. All three parts operate with 4-32VDC input control voltage and support 48-660V load voltage ranges, enabling direct substitution in applications designed for any of these part numbers.