A2490E Solid State Relay SPST-NO 90A Equivalent & Substitute Parts

Part Overview

The A2490E is a Sensata-Crydom solid state relay (SSR) featuring SPST-NO (1 Form A) configuration in a hockey puck package. This active product is designed for chassis mount applications requiring AC zero-cross switching at 90A load current with input voltage range of 18–36VAC and load voltage range of 24–280V. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits higher voltage ratings within compatible electrical and mechanical parameters.

Substiute Parts

A2490E

Sensata-CrydomIn Stock: 663A2490E Datasheet

Current PartRFQ

84138153N

CrouzetIn Stock: 92784138153N Datasheet

MFR RecommendedRFQ

84138153N

CrouzetIn Stock: 92784138153N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A2490E is determined by the following critical parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A) to maintain identical switching topology
• Load Current: Must be rated for 90A minimum to handle specified load without derating
• Output Type: Must be AC with zero-cross switching for compatible control behavior
• Package / Case: Must be hockey puck form factor for mechanical fit in chassis mount applications
• Termination Style: Must use screw terminal for direct connection compatibility
• Load Voltage Range: Substitute must encompass or exceed the 24–280V range of the main part
• Input Voltage Compatibility: Substitute input voltage range must be compatible with 18–36VAC control signal

The Crouzet 84138153N meets all substitution criteria. It maintains identical circuit configuration, load current, output type, package form factor, and termination style. The substitute provides an extended load voltage range (24–500V), which encompasses the main part's 24–280V specification. Input voltage range (20–260VAC/DC) is compatible with the main part's 18–36VAC requirement.

Parameter Comparison

Engineering Selection Recommendations

Both the A2490E and 84138153N are active products with RoHS compliance, ensuring regulatory alignment for current manufacturing and deployment. The A2490E remains the primary selection when Sensata-Crydom supply is available and load voltage requirements do not exceed 280V. The Crouzet 84138153N (84138153N) is a direct functional substitute when A2490E availability is constrained. The extended load voltage rating (24–500V) of the substitute provides additional design margin and does not introduce incompatibility with applications operating within the A2490E's 24–280V specification. Both parts share identical circuit topology, current rating, switching behavior, and mechanical form factor, ensuring drop-in compatibility in chassis mount SSR applications.

Frequently Asked Questions (FAQ)

Q: Can the Crouzet 84138153N replace the A2490E in all applications?

A: Yes, within the specified electrical parameters. Both parts are SPST-NO relays rated for 90A load current with AC zero-cross switching and hockey puck chassis mount packaging. The Crouzet part's extended load voltage range (24–500V) encompasses the A2490E's 24–280V specification, and its input voltage range (20–260VAC/DC) is compatible with the A2490E's 18–36VAC control signal.

Q: What are the key differences between these parts?

A: The primary differences are manufacturer (Sensata-Crydom vs. Crouzet), load voltage rating (280V vs. 500V maximum), and input voltage specification (18–36VAC vs. 20–260VAC/DC). All other electrical and mechanical parameters are identical.

Q: Are both parts RoHS compliant?

A: Yes, both the A2490E and 84138153N are RoHS compliant, meeting regulatory requirements for lead-free manufacturing and hazardous substance restrictions.

Q: Does the higher voltage rating of the substitute affect performance in lower-voltage applications?

A: No. The Crouzet 84138153N is rated for load voltages up to 500V, which means it is suitable for applications operating at the A2490E's 24–280V range. Higher voltage rating does not degrade performance at lower operating voltages.

Q: Are the physical dimensions and mounting interfaces identical?

A: Yes, both parts use the hockey puck package form factor with chassis mount configuration and screw terminal termination, ensuring mechanical compatibility in existing designs.