Sensata-Crydom 84134020 SSR Relay SPST-NO 50A 24-280V Equivalent & Substitute Parts

Part Overview

The Sensata-Crydom 84134020 is an active solid-state relay (SSR) with SPST-NO (1 Form A) configuration, rated for 50A load current and 24V to 280V output voltage range. This hockey puck-style chassis mount relay operates with 3-32VDC input and features zero-cross AC output switching. The part is RoHS3 compliant and REACH affected. Finding equivalent or substitute parts may be necessary due to inventory constraints, lead time requirements, or specific application voltage range needs.

Substiute Parts

84134020

Sensata-CrydomIn Stock: 104484134020 Datasheet

Current PartRFQ

84137120N

CrouzetIn Stock: 84984137120N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 84134020 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 minimum 50A to support the same load capacity
• Package / Case: Must be Hockey Puck form factor to ensure mechanical compatibility with existing mounting
• Mounting Type: Must be Chassis Mount for installation compatibility
• Termination Style: Must use Screw Terminal for connection compatibility
• Output Type: Must be AC with Zero Cross switching capability
• Input Voltage Range: Must accommodate the 3-32VDC control signal range

The substitute part 84137120N (Crouzet) meets all critical substitution criteria. While it features an extended output voltage range (48V-660V versus 24V-280V), this represents a superset capability that does not compromise compatibility with the original part's voltage specifications.

Parameter Comparison

Engineering Selection Recommendations

The Crouzet 84137120N qualifies as a direct substitute for the Sensata-Crydom 84134020 based on matching circuit configuration, load current rating, package form factor, and mounting specifications. Both parts maintain active product status and comply with RoHS standards, ensuring long-term availability and regulatory compliance.

The 84137120N exhibits a marginally lower input voltage floor (4VDC minimum versus 3VDC) and an extended output voltage range. These differences do not restrict compatibility in applications designed for the original 84134020 specifications. The extended output voltage capability of the 84137120N provides additional flexibility for applications requiring higher voltage switching without compromising performance at the original voltage levels.

Frequently Asked Questions (FAQ)

Q: Can the Crouzet 84137120N replace the Sensata-Crydom 84134020 in existing applications?

A: Yes. Both parts share identical circuit configuration (SPST-NO), load current rating (50A), package form factor (Hockey Puck), mounting type (Chassis Mount), and termination style (Screw Terminal). The 84137120N's extended output voltage range does not affect compatibility with applications designed for 24-280V operation.

Q: What is the difference in input voltage range between these parts?

A: The 84134020 accepts 3-32VDC input, while the 84137120N accepts 4-32VDC input. This 1VDC difference at the lower threshold is negligible for most control circuit applications and does not affect practical substitution in standard industrial control systems.

Q: Why does the 84137120N have a higher maximum output voltage rating?

A: The 84137120N is rated for 48-660V output, compared to the 84134020's 24-280V range. This extended capability allows the Crouzet part to serve a broader range of applications. In applications limited to 24-280V operation, the higher rating does not introduce any compatibility issues.

Q: Are both parts RoHS compliant?

A: Yes. The 84134020 is RoHS3 compliant, and the 84137120N is RoHS compliant. Both meet current environmental and regulatory standards for electronic components.

Q: What packaging is available for each part?

A: The 84134020 is supplied in Bulk packaging, while the 84137120N is supplied in Box packaging. Both maintain identical electrical and mechanical specifications; packaging differences reflect supplier logistics only.