CMD2475 Solid State Relay SPST-NO 75A 24-280V Equivalent & Substitute Parts

Part Overview

The CMD2475 is a solid state relay (SSR) manufactured by Sensata-Crydom, configured as a single-pole single-throw normally open (SPST-NO) device with a rated load current of 75A and operating voltage range of 24V to 280V AC. The device features zero-cross switching for AC loads and operates with a 3V to 32VDC input control signal. The CMD2475 is classified as Last Time Buy, indicating production discontinuation. Equivalent and substitute parts are necessary to maintain system functionality and ensure continued availability for new designs and field replacements.

Key Parameters

Parameter	Value
Manufacturer Part Number	CMD2475
Manufacturer	Sensata-Crydom
Circuit Configuration	SPST-NO (1 Form A)
Output Type	AC, Zero Cross
Voltage - Input	3 ~ 32VDC
Voltage - Load	24 V ~ 280 V
Load Current	75 A
Mounting Type	Chassis Mount
Termination Style	Screw Terminal
Package / Case	Hockey Puck
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the CMD2475 is determined by the following critical parameters:

Circuit Configuration: Must be SPST-NO (1 Form A)
Output Type: Must be AC with zero-cross switching
Input Voltage Range: Must accommodate 3 ~ 32VDC
Load Voltage Range: Must accommodate 24 V ~ 280 V
Load Current Rating: Must be equal to or greater than 75A
Mounting Type: Must be Chassis Mount
Termination Style: Must be Screw Terminal

Substitute parts are grouped into two categories based on load current capacity:

Direct Equivalents (75A Rating): Parts with identical 75A load current rating maintain full functional parity with the CMD2475.

Higher Capacity Substitutes (80A and 90A Ratings): Parts with load current ratings of 80A or 90A provide enhanced current handling capability while maintaining all other critical electrical and mechanical parameters. These substitutes are suitable for applications where the CMD2475 is specified, as they operate within the same voltage ranges and control signal specifications.

Parameter Comparison

Part Number	Manufacturer	Load Current (A)	Input Voltage	Load Voltage	Circuit	Output Type	Package	Product Status
CMD2475	Sensata-Crydom	75	3 ~ 32VDC	24 ~ 280V	SPST-NO	AC, Zero Cross	Hockey Puck	Last Time Buy
D2475	Sensata-Crydom	75	3 ~ 32VDC	24 ~ 280V	SPST-NO	AC, Zero Cross	Hockey Puck	Active
84137030	Sensata-Crydom	75	3 ~ 32VDC	24 ~ 280V	SPST-NO	AC, Zero Cross	Hockey Puck	Active
ASR-SN240D80ZW-L	Altran Magnetics, LLC	80	3 ~ 32VDC	24 ~ 280V	SPST-NO	AC, Zero Cross	Module	Active
CWD2490	Sensata-Crydom	90	3 ~ 32VDC	24 ~ 280V	SPST-NO	AC, Zero Cross	Hockey Puck	Active

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents)

D2475 and 84137030 are direct functional equivalents to the CMD2475, maintaining identical electrical specifications and load current rating of 75A. Both parts are in Active product status, ensuring long-term availability. D2475 carries ROHS3 Compliant certification and REACH Affected status. 84137030 carries RoHS Compliant status with MSL rating of 1 (Unlimited).

Secondary Substitutes (Higher Capacity)

CWD2490 (90A) and ASR-SN240D80ZW-L (80A) provide increased load current capacity while maintaining all critical electrical parameters. CWD2490 is a Sensata-Crydom product in Active status with RoHS Compliant certification. ASR-SN240D80ZW-L is manufactured by Altran Magnetics, LLC, in Active status with ROHS3 Compliant certification and REACH Unaffected status. The ASR-SN240D80ZW-L uses a Module package configuration rather than Hockey Puck, which may require mechanical integration verification.

Frequently Asked Questions (FAQ)

Q: Can D2475 be used as a direct replacement for CMD2475?

A: Yes. D2475 maintains identical electrical specifications, load current rating, input/output voltage ranges, circuit configuration, and termination style. Both are SPST-NO devices with AC zero-cross switching and Chassis Mount configuration.

Q: What is the difference between 75A, 80A, and 90A rated substitutes?

A: Load current rating indicates the maximum continuous AC current the relay can switch. The CMD2475 is rated for 75A. Substitutes rated at 80A or 90A can handle higher current loads while maintaining the same voltage specifications and control signal requirements. Selection depends on application current requirements.

Q: Can CWD2490 (90A) replace CMD2475 (75A) in all applications?

A: CWD2490 is electrically compatible with CMD2475 across all specified voltage ranges and control signal parameters. The higher current rating provides additional capacity margin. Mechanical integration must be verified, as both use Hockey Puck packaging.

Q: What is the significance of the Hockey Puck versus Module package?

A: Hockey Puck and Module are different physical form factors for Chassis Mount solid state relays. Both use Screw Terminal connections. ASR-SN240D80ZW-L uses Module packaging, which may require different mounting hardware or mechanical clearance verification compared to Hockey Puck devices.

Q: Are all substitutes RoHS compliant?

A: All listed substitutes meet RoHS compliance requirements. D2475 and ASR-SN240D80ZW-L carry ROHS3 Compliant certification. CMD2475, 84137030, and CWD2490 carry RoHS Compliant certification.

Q: Why is CMD2475 marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued production. D2475, 84137030, CWD2490, and ASR-SN240D80ZW-L are all in Active production status and represent the recommended alternatives for new designs and ongoing supply requirements.

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