H12WD4825G Solid State Relay SPST-NO 25A 48-660V Equivalent & Substitute Parts

Part Overview

The H12WD4825G is a Sensata-Crydom solid state relay (SSR) with SPST-NO (1 Form A) configuration, rated for 25A load current at 48-660V AC output. This active product operates with 4-32VDC input control voltage and features zero-cross switching for AC loads. The hockey puck form factor with screw terminal connections is designed for chassis mount applications. Equivalent and substitute parts are identified to provide procurement flexibility while maintaining functional and electrical compatibility.

Substiute Parts

H12WD4825G

Sensata-CrydomIn Stock: 1125H12WD4825G Datasheet

Current PartRFQ

84137110N

CrouzetIn Stock: 110684137110N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the H12WD4825G are identified based on electrical and mechanical parameter equivalence. The substitution criteria include:

• Circuit Configuration: SPST-NO (1 Form A) topology
• Output Characteristics: AC switching with zero-cross functionality
• Input Control Voltage: 4-32VDC range
• Load Voltage Range: 48-660V AC
• Load Current Rating: 25A
• Physical Form Factor: Hockey puck package
• Termination: Screw terminal connections
• Mounting: Chassis mount capability

Parts meeting all these parameters are classified as direct equivalents and may be substituted without circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

Both the H12WD4825G and 84137110N are active products with equivalent electrical and mechanical specifications. Selection between these parts may be based on:

• Compliance Requirements: The H12WD4825G carries ROHS3 Compliant status, while the 84137110N is RoHS Compliant. Both meet regulatory requirements for their respective markets.
• REACH Status: The H12WD4825G is REACH Affected; the 84137110N is REACH Unaffected. Applications subject to REACH regulations should consider this distinction.
• Packaging: H12WD4825G is supplied in bulk packaging; 84137110N is supplied in box packaging. Procurement and inventory management practices may influence selection.
• Availability: Both parts maintain active inventory status with comparable stock levels.

Frequently Asked Questions (FAQ)

Q: Can the 84137110N replace the H12WD4825G in existing designs?

A: Yes. Both parts share identical electrical specifications (25A at 48-660V AC output, 4-32VDC input), circuit configuration (SPST-NO), output type (AC zero-cross), and physical form factor (hockey puck with screw terminals). No circuit modifications are required.

Q: What are the key parameters that determine substitutability?

A: Substitutability is determined by matching: circuit configuration (SPST-NO), load current rating (25A), input voltage range (4-32VDC), output voltage range (48-660V), output type (AC zero-cross), package form factor (hockey puck), termination style (screw terminal), and mounting type (chassis mount).

Q: Are there differences in compliance certifications between these parts?

A: Yes. The H12WD4825G is ROHS3 Compliant and REACH Affected. The 84137110N is RoHS Compliant and REACH Unaffected. Applications with specific regulatory requirements should verify compliance status against applicable standards.

Q: Does packaging type affect electrical performance?

A: No. Packaging type (bulk versus box) does not affect electrical performance or functional compatibility. Packaging selection is based on procurement, storage, and inventory management requirements.

Q: Are both parts suitable for zero-cross AC switching applications?

A: Yes. Both the H12WD4825G and 84137110N feature AC zero-cross output type, making them suitable for applications requiring synchronized switching at AC line zero-crossing points.