H12WD48125-10 Equivalent & Substitute Parts

Part Overview

The H12WD48125-10 is a solid-state relay (SSR) manufactured by Sensata-Crydom, designed for high-current AC switching applications. This SPST-NO (1 Form A) device operates with a 4–32VDC control input and handles loads up to 125A at 48–660V AC. The hockey puck form factor and screw terminal configuration make it suitable for chassis-mounted industrial applications. The part is currently active in production and RoHS compliant, ensuring compliance with modern environmental standards. Equivalent parts may be required due to supply constraints, regional availability, or specific application requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

H12WD48125-10

Sensata-CrydomIn Stock: 899H12WD48125-10 Datasheet

Current PartRFQ

84138180N

CrouzetIn Stock: 116984138180N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the H12WD48125-10 is determined by the following critical parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A) to maintain identical switching functionality
• Load Current Rating: Must be rated for 125A minimum to handle the same load conditions
• Control Input Voltage: Must accept 4–32VDC control signals for direct integration with existing control systems
• Package / Case: Must be hockey puck form factor to ensure mechanical compatibility with chassis mounting
• Termination Style: Must use screw terminals for direct connection compatibility
• Output Type: Must support AC switching; zero-cross capability is permitted as an enhancement
• Load Voltage Range: Must cover at least the 48–660V AC range or a subset thereof that includes the application's operating voltage
• Mounting Type: Must be chassis mount to maintain installation compatibility
• Compliance: Must be RoHS compliant to meet regulatory requirements

The substitute part 84138180N (Crouzet GN+ series) meets these criteria with the following considerations: it maintains identical control input voltage, circuit configuration, current rating, package type, termination style, and mounting method. The load voltage range is 24–500V AC, which is a subset of the original specification. This substitution is valid for applications operating within the 48–500V AC range.

Parameter Comparison

Engineering Selection Recommendations

Both the H12WD48125-10 and 84138180N are active production parts with RoHS compliance, ensuring regulatory alignment and long-term availability. The primary distinction is the load voltage range: the H12WD48125-10 supports 48–660V AC, while the 84138180N supports 24–500V AC. Selection between these parts depends on the specific load voltage requirements of the application.

For applications operating at voltages between 48V and 500V AC, either part is electrically compatible. The Crouzet 84138180N includes zero-cross switching capability, which may provide additional benefits in noise reduction and component stress mitigation, though this is not a requirement for basic substitution.

For applications requiring operation above 500V AC or below 48V AC, the H12WD48125-10 is the only suitable option among these two parts.

Frequently Asked Questions (FAQ)

Q: Can the 84138180N replace the H12WD48125-10 in all applications?

A: The 84138180N is compatible with applications operating within the 48–500V AC range. Applications requiring operation above 500V AC or below 48V AC must use the H12WD48125-10.

Q: Are the physical dimensions and mounting interfaces identical?

A: Both parts use the hockey puck package with chassis mount configuration and screw terminal termination, ensuring mechanical and electrical interface compatibility.

Q: What is the significance of zero-cross switching in the 84138180N?

A: Zero-cross switching reduces electromagnetic interference and component stress by synchronizing relay closure with the AC voltage zero-crossing point. This is an enhancement feature and not required for basic substitution compatibility.

Q: Do both parts accept the same control input voltage?

A: Yes, both parts accept 4–32VDC control input, allowing direct integration with existing control circuits without modification.

Q: Are both parts RoHS compliant?

A: Yes, both the H12WD48125-10 and 84138180N are RoHS compliant, meeting environmental and regulatory requirements.

Q: What load current rating do both parts support?

A: Both parts are rated for 125A load current, maintaining identical current-handling capacity.