CSW2490 Solid State Relay SPST-NO 90A 24-280V Equivalent & Substitute Parts

Part Overview

The CSW2490 is a solid state relay (SSR) with SPST-NO (1 Form A) configuration, rated for 90A load current at 24-280V AC output. Manufactured by Sensata Technologies, this hockey puck-style relay operates with 3-32VDC input and features zero-cross switching for AC loads. The part is designated as Last Time Buy, making identification of equivalent and substitute components essential for ongoing procurement and system continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	CSW2490
Manufacturer	Sensata Technologies
Circuit Configuration	SPST-NO (1 Form A)
Output Type	AC, Zero Cross
Voltage - Input	3 ~ 32VDC
Voltage - Load	24 V ~ 280 V
Load Current	90 A
Mounting Type	Chassis Mount
Termination Style	Screw Terminal
Package / Case	Hockey Puck
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the CSW2490 is determined by the following critical parameters:

Primary Substitution Criteria:

Circuit configuration: SPST-NO (1 Form A)
Output type: AC with zero-cross switching
Input voltage range: 3-32VDC minimum
Load voltage range: Must encompass or exceed 24-280V
Load current: Minimum 90A
Mounting type: Chassis Mount
Termination: Screw Terminal

Substitute Categories:

Direct Equivalent (D2490): Identical electrical specifications and mechanical form factor. Same manufacturer (Sensata Technologies), same series designation, same hockey puck package. Active product status ensures continued availability.

Manufacturer-Recommended Substitutes: Parts meeting or exceeding the CSW2490 electrical specifications while maintaining mechanical compatibility. These include the Crouzet 84137480N (higher voltage rating, same current) and Altran Magnetics ASR-SN240D100ZW-L (higher current rating, same voltage range).

Parameter Comparison

Parameter	CSW2490 (Sensata)	D2490 (Sensata)	84137480N (Crouzet)	ASR-SN240D100ZW-L (Altran)
Circuit Configuration	SPST-NO (1 Form A)	SPST-NO (1 Form A)	SPST-NO (1 Form A)	SPST-NO (1 Form A)
Output Type	AC, Zero Cross	AC, Zero Cross	AC, Zero Cross	AC, Zero Cross
Voltage - Input	3 ~ 32VDC	3 ~ 32VDC	4 ~ 32VDC	3 ~ 32VDC
Voltage - Load	24 V ~ 280 V	24 V ~ 280 V	48 V ~ 660 V	24 V ~ 280 V
Load Current	90 A	90 A	90 A	100 A
Mounting Type	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount
Termination Style	Screw Terminal	Screw Terminal	Screw Terminal	Screw Terminal
Package / Case	Hockey Puck	Hockey Puck	Hockey Puck	Module
Product Status	Last Time Buy	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant

Engineering Selection Recommendations

D2490 (Sensata Technologies): This is the primary direct equivalent. Identical electrical and mechanical specifications with Active product status ensure long-term availability. ROHS3 compliance matches the original part. Recommended as the first choice for direct replacement.

84137480N (Crouzet GNA Series): Suitable for applications requiring higher load voltage capability (48-660V vs. 24-280V). Maintains 90A current rating and all mechanical compatibility parameters. RoHS compliant. Input voltage minimum of 4VDC (versus 3VDC) represents a minor operational constraint. Active product status supports procurement continuity.

ASR-SN240D100ZW-L (Altran Magnetics SN Series): Appropriate for applications where load current headroom is beneficial (100A vs. 90A). Maintains identical voltage specifications (24-280V load, 3-32VDC input) and ROHS3 compliance. Package designation as "Module" rather than "Hockey Puck" requires mechanical form factor verification for mounting compatibility. Active product status ensures availability.

Frequently Asked Questions (FAQ)

Q: Can D2490 be used as a direct replacement for CSW2490? A: Yes. D2490 is electrically and mechanically identical to CSW2490, with matching SPST-NO circuit configuration, 90A load current, 24-280V load voltage range, 3-32VDC input, and hockey puck package. Both are ROHS3 compliant. D2490 has Active product status, ensuring continued supply.

Q: What is the key difference between 84137480N and CSW2490? A: The 84137480N supports higher load voltage (48-660V versus 24-280V) while maintaining the same 90A current rating and SPST-NO configuration. Input voltage minimum is 4VDC instead of 3VDC. Both use screw terminals and chassis mount configuration. The 84137480N is suitable only for applications operating within its specified voltage range.

Q: Is ASR-SN240D100ZW-L mechanically compatible with CSW2490? A: ASR-SN240D100ZW-L maintains identical electrical specifications (24-280V load, 3-32VDC input, SPST-NO, zero-cross AC output) and mounting type (chassis mount, screw terminal). However, the package is designated as "Module" rather than "Hockey Puck." Physical form factor must be verified against available mounting space before selection.

Q: Why is CSW2490 designated Last Time Buy? A: Last Time Buy status indicates the manufacturer is discontinuing production. D2490 (same manufacturer, Active status) is the recommended transition path for ongoing procurement requirements.

Q: Are all substitute parts ROHS3 compliant? A: D2490 and ASR-SN240D100ZW-L are ROHS3 compliant. 84137480N is RoHS compliant but not specifically designated ROHS3. Compliance requirements should be verified against application specifications.

Q: Can these relays be used interchangeably in existing designs? A: D2490 is a direct interchange. 84137480N and ASR-SN240D100ZW-L require application-specific voltage and mechanical compatibility verification. Load voltage range and package form factor must match system requirements.

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