D24125G Solid State Relay - Equivalent & Substitute Parts

Part Overview

The D24125G is an active Sensata-Crydom solid state relay (SSR) featuring SPST-NO (1 Form A) switching configuration with a 125A load current capacity. This hockey puck-style chassis mount relay operates with 24V to 280V AC load voltage and 3V to 32VDC input control voltage, incorporating zero-cross switching for AC applications. The component is RoHS compliant and classified as Moisture Sensitivity Level 1 (unlimited shelf life). Equivalent parts are identified when they maintain the same circuit topology, load current rating, and termination style while operating within compatible voltage ranges.

Substiute Parts

D24125G

Sensata-CrydomIn Stock: 889D24125G Datasheet

Current PartRFQ

84137180N

CrouzetIn Stock: 121884137180N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the D24125G are identified based on the following critical parameters that determine functional equivalence:

• Circuit Configuration: Must be SPST-NO (1 Form A) to maintain identical switching behavior
• Load Current Rating: Must be 125 A to support the same power handling capacity
• Package / Case: Must be Hockey Puck to ensure mechanical compatibility with existing mounting infrastructure
• Termination Style: Must be Screw Terminal for direct connection compatibility
• Output Type: Must be AC with Zero Cross switching for synchronized AC load control
• Mounting Type: Must be Chassis Mount for installation compatibility

The substitute part 84137180N (Crouzet, Series GN) meets all these criteria. While it operates with a higher load voltage range (48V to 660V versus 24V to 280V), this represents an extended capability that maintains backward compatibility with the original specification. The input voltage range (4V to 32VDC) overlaps substantially with the D24125G specification (3V to 32VDC), with only a 1V minimum difference that does not affect practical application in standard control circuits.

Parameter Comparison

Engineering Selection Recommendations

Both the D24125G and 84137180N are active products with RoHS compliance and identical moisture sensitivity ratings, ensuring equivalent long-term reliability and environmental compliance. The D24125G remains the primary specification for applications requiring operation within the 24V to 280V load voltage window. The 84137180N serves as a direct substitute when higher load voltage capability (up to 660V) is required or when supply chain availability necessitates component substitution. Both parts maintain identical switching performance through zero-cross AC output control and support the same 125A load current specification. Selection between these parts should be based on load voltage requirements and component availability rather than functional performance differences.

Frequently Asked Questions (FAQ)

Q: Can the 84137180N replace the D24125G in all applications?

A: The 84137180N is functionally equivalent for applications operating within the D24125G load voltage range (24V to 280V). The extended voltage capability of the 84137180N (up to 660V) does not create incompatibility with lower-voltage loads. The 1V difference in minimum input voltage (4V versus 3V) is negligible in standard 24VDC control circuits.

Q: Are there mechanical differences between these hockey puck packages?

A: Both parts use identical hockey puck chassis mount packages with screw terminal connections. Direct mechanical substitution is supported without modification to mounting hardware or terminal connections.

Q: Do both parts support the same control voltage range?

A: The D24125G accepts 3V to 32VDC input, while the 84137180N accepts 4V to 32VDC. For control circuits operating at 4V or higher, both parts are fully compatible. Applications using 3V control signals require the D24125G.

Q: What is the significance of zero-cross switching in these relays?

A: Zero-cross switching synchronizes relay activation with the AC load voltage zero-crossing point, reducing electromagnetic interference and switching stress on connected loads. Both the D24125G and 84137180N incorporate this feature identically.

Q: Are both parts suitable for industrial control applications?

A: Yes. Both parts are active products with RoHS compliance and MSL 1 ratings, meeting industrial reliability and environmental standards. Selection depends on specific load voltage and control voltage requirements.