Sensata-Crydom 84134080 Solid State Relay SPST-NO 125A

Part Overview

The Sensata-Crydom 84134080 is an active solid state relay (SSR) with SPST-NO (1 Form A) configuration, rated for 125A load current and 24–280V AC output. This hockey puck-style relay is designed for chassis mount applications requiring zero-cross switching capability. The part is RoHS compliant and carries an MSL rating of 1 (unlimited moisture sensitivity). Finding equivalent substitute parts may be necessary due to inventory constraints, supply chain disruptions, or application-specific voltage requirements that exceed the standard operating range.

Substiute Parts

84134080

Sensata-CrydomIn Stock: 88884134080 Datasheet

Current PartRFQ

84137180N

CrouzetIn Stock: 121884137180N Datasheet

MFR RecommendedRFQ

84137180N

CrouzetIn Stock: 121884137180N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 84134080 is determined by the following critical parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A) to maintain functional equivalence
• Load Current Rating: Must be rated for minimum 125 A continuous operation
• Package / Case: Must be hockey puck form factor for mechanical compatibility with chassis mount applications
• Termination Style: Must use screw terminal connections
• Output Type: Must support AC output with zero-cross switching capability
• Input Voltage Range: Must accommodate 3–32 VDC control signal
• RoHS Compliance: Must meet RoHS requirements for regulatory alignment

The substitute part 84137180N meets all these criteria while offering an extended output voltage range (48–660V) compared to the original specification (24–280V). This extended range provides greater flexibility for applications requiring higher voltage switching capability while maintaining identical load current capacity, circuit topology, and mechanical form factor.

Parameter Comparison

Engineering Selection Recommendations

Both the 84134080 and 84137180N are active products with full RoHS compliance and identical MSL ratings. The primary distinction is the output voltage operating range. The 84134080 operates within 24–280V, while the 84137180N extends to 48–660V. Selection between these parts depends on the application's load voltage requirements. For systems operating within the 24–280V window, either part is functionally equivalent. For applications requiring output voltages exceeding 280V or below 48V, the voltage range difference becomes a determining factor. Both parts maintain identical load current capacity (125A), control input voltage compatibility (3–32VDC minimum), and mechanical form factor (hockey puck chassis mount with screw terminals).

Frequently Asked Questions (FAQ)

Q: Can the 84137180N directly replace the 84134080 in all applications?

A: Direct replacement is possible when the application's load voltage falls within both parts' operating ranges (48–280V). For applications using load voltages below 48V or above 280V, voltage compatibility must be verified before substitution.

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

A: The hockey puck form factor is a standardized mechanical package for high-current solid state relays designed for direct chassis mounting with screw terminal connections. Both the 84134080 and 84137180N use this identical package, ensuring mechanical interchangeability in chassis mount applications.

Q: Are there differences in control signal requirements between these parts?

A: The 84134080 accepts input voltage from 3–32VDC, while the 84137180N requires 4–32VDC minimum. Applications using control signals below 4V must use the 84134080 to ensure reliable operation.

Q: Do both parts support zero-cross switching?

A: Yes. Both the 84134080 and 84137180N feature AC output with zero-cross switching capability, which reduces electromagnetic interference and extends load component life by switching at AC voltage zero crossings.

Q: What does RoHS compliance indicate for these relays?

A: RoHS compliance confirms that both parts meet restrictions on hazardous substances, including lead, cadmium, mercury, and certain flame retardants. This certification is required for many industrial and commercial applications subject to environmental regulations.