H12WD48125 Solid State Relay - Equivalent & Substitute Parts

Part Overview

The H12WD48125 is a solid state relay (SSR) manufactured by Sensata Technologies, designed for industrial switching applications requiring high current capacity and wide voltage range compatibility. This SPST-NO (Single Pole Single Throw - Normally Open) relay operates with AC output and zero-cross switching capability, making it suitable for resistive and inductive load applications in power distribution and control systems.

The H12WD48125 maintains active product status with robust inventory availability. Identifying equivalent substitute parts is essential for supply chain continuity, procurement flexibility, and ensuring uninterrupted availability across manufacturing and maintenance operations.

Substiute Parts

H12WD48125

Sensata TechnologiesIn Stock: 841H12WD48125 Datasheet

Current PartRFQ

84137180N

CrouzetIn Stock: 121884137180N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the H12WD48125 are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Circuit configuration: SPST-NO (1 Form A)
• Output type: AC with zero-cross switching
• Input voltage range: 4 ~ 32 VDC
• Load voltage range: 48 V ~ 660 V
• Load current capacity: 125 A
• Termination style: Screw Terminal
• Package type: Hockey Puck
• Mounting type: Chassis Mount

The substitute part 84137180N (Crouzet, GN series) meets all critical electrical and mechanical parameters, ensuring direct functional equivalence in applications requiring SPST-NO solid state relay switching with 125 A capacity across the specified voltage ranges.

Parameter Comparison

Engineering Selection Recommendations

Both the H12WD48125 and 84137180N are active products with RoHS compliance certification, meeting current environmental and regulatory requirements for industrial applications. The H12WD48125 (Sensata Technologies) and 84137180N (Crouzet) demonstrate identical electrical specifications and mechanical form factors, enabling direct substitution in SPST-NO solid state relay applications.

Selection between these parts should be based on procurement availability, lead time requirements, and supply chain logistics. Both manufacturers maintain active product status and provide equivalent performance characteristics for 125 A AC switching applications across 48 V to 660 V load voltage ranges with 4 ~ 32 VDC control input.

Frequently Asked Questions (FAQ)

Q: Can the 84137180N (Crouzet) directly replace the H12WD48125 (Sensata) in existing installations?

A: Yes. Both parts share identical circuit configuration (SPST-NO), output type (AC, zero-cross), input voltage range (4 ~ 32 VDC), load voltage range (48 V ~ 660 V), load current capacity (125 A), termination style (screw terminal), and package type (hockey puck). Direct substitution is electrically and mechanically compatible.

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

A: Both the H12WD48125 and 84137180N are RoHS Compliant, meeting current environmental standards for industrial component applications.

Q: What is the significance of the hockey puck package type?

A: The hockey puck package is a standardized form factor for high-current solid state relays, providing consistent mounting interfaces and thermal characteristics. Both substitute parts use this identical package type, ensuring mechanical compatibility in chassis-mount applications.

Q: Do both parts support zero-cross switching?

A: Yes. Both the H12WD48125 and 84137180N feature AC output with zero-cross switching capability, which reduces electromagnetic interference and extends load component life in resistive and inductive applications.

Q: What input voltage range do these relays require?

A: Both parts operate with input voltage range of 4 ~ 32 VDC, providing flexibility for integration with standard industrial control systems and low-voltage DC power supplies.