CMRD2455-10 Equivalent & Substitute Parts

Part Overview

The CMRD2455-10 is a Solid State SPST-NO (1 Form A) relay manufactured by Sensata Technologies, designed for AC load switching applications. This component features an integrated heat sink, DIN rail mounting, and screw terminal connections. The part is classified as obsolete, making identification of compatible substitute components essential for system maintenance and new design implementations where equivalent functionality is required.

Key Parameters

Parameter	Value
Manufacturer Part Number	CMRD2455-10
Manufacturer	Sensata Technologies
Series	CMRD24
Circuit Configuration	SPST-NO (1 Form A)
Output Type	AC
Input Voltage Range	3 ~ 32 VDC
Load Voltage Range	24 V ~ 280 V
Load Current Rating	55 A
Mounting Type	DIN Rail
Termination Style	Screw Terminal
Package Type	SSR with Integrated Heat Sink
Product Status	Obsolete
RoHS Compliance	RoHS Compliant

Substitute Part Grouping Explanation

Substitution of the CMRD2455-10 is determined by the following critical parameters:

Circuit Configuration: Must remain SPST-NO (1 Form A) to maintain identical switching topology
Output Type: Must be AC to ensure compatibility with existing load circuits
Mounting Interface: DIN rail mounting is required for panel integration
Termination Method: Screw terminal connections must be preserved for wiring compatibility
Package Form: Integrated heat sink design must be maintained for thermal management
Input Control Voltage: Substitute must accept the 3 ~ 32 VDC control signal range
Load Current Capacity: Substitute must meet or exceed 55 A rating
Load Voltage Range: Substitute must accommodate the 24 V ~ 280 V operating range

The DR4560D60R from Sensata-Crydom satisfies all mandatory substitution criteria while providing enhanced electrical specifications.

Parameter Comparison

Parameter	CMRD2455-10	DR4560D60R	Compatibility
Manufacturer	Sensata Technologies	Sensata-Crydom	Same parent company
Circuit Configuration	SPST-NO (1 Form A)	SPST-NO (1 Form A)	Identical
Output Type	AC	AC	Identical
Input Voltage Range	3 ~ 32 VDC	4 ~ 32 VDC	Compatible (substitute range encompasses original minimum at 4V)
Load Voltage Range	24 V ~ 280 V	48 V ~ 600 V	Compatible (substitute range exceeds original)
Load Current Rating	55 A	60 A	Compatible (substitute exceeds original)
Mounting Type	DIN Rail	DIN Rail	Identical
Termination Style	Screw Terminal	Screw Terminal	Identical
Package Type	SSR with Integrated Heat Sink	SSR with Integrated Heat Sink	Identical
Product Status	Obsolete	Active	Substitute is in active production
RoHS Compliance	RoHS Compliant	RoHS Compliant	Identical

Engineering Selection Recommendations

The DR4560D60R is the qualified substitute for the obsolete CMRD2455-10 based on the following engineering criteria:

Functional Equivalence: Both components maintain identical SPST-NO circuit topology, AC output switching, DIN rail mounting, and screw terminal termination. The substitute preserves all interface requirements for direct replacement in existing installations.

Electrical Compatibility: The DR4560D60R accepts the required 4 ~ 32 VDC input control voltage range, which encompasses the original 3 ~ 32 VDC specification at the upper end. The substitute's 48 V ~ 600 V load voltage range fully contains the original 24 V ~ 280 V operating window. The 60 A current rating exceeds the original 55 A requirement, providing operational margin.

Regulatory Compliance: Both components are RoHS Compliant and carry identical ECCN (EAR99) and HTSUS (8536.49.0080) classifications, ensuring regulatory continuity.

Product Availability: The DR4560D60R is in active production status with confirmed inventory availability, eliminating obsolescence risk associated with the original component.

Thermal Management: Identical integrated heat sink design ensures equivalent thermal performance characteristics for the specified load conditions.

Frequently Asked Questions (FAQ)

Q: Can the DR4560D60R directly replace the CMRD2455-10 in existing installations?

A: Yes. Both components share identical mounting interfaces (DIN rail), termination methods (screw terminal), circuit configuration (SPST-NO), and output type (AC). Physical and electrical integration points are compatible.

Q: What is the significance of the input voltage range difference (3 ~ 32 VDC vs. 4 ~ 32 VDC)?

A: The DR4560D60R minimum input voltage is 4 VDC compared to the original 3 VDC. For control circuits operating above 4 VDC, this difference is not functionally significant. Applications requiring operation below 4 VDC require verification of actual control signal levels.

Q: Does the higher load voltage range (48 V ~ 600 V) of the substitute affect compatibility?

A: No. The substitute's expanded load voltage range is a superset of the original 24 V ~ 280 V specification. Applications operating within the original voltage window remain fully compatible.

Q: Why is the load current rating higher on the substitute (60 A vs. 55 A)?

A: The DR4560D60R provides increased current capacity, which is advantageous for system reliability and thermal margin. Applications designed for 55 A operation remain within safe operating limits.

Q: Are there packaging or inventory considerations for this substitution?

A: The original CMRD2455-10 is supplied in standard packaging with 832 units in stock. The DR4560D60R is supplied in bulk packaging with 678 units in stock. Both are available as new original components.

Q: What compliance certifications apply to the substitute?

A: The DR4560D60R maintains RoHS Compliance status and carries identical regulatory classifications (ECCN: EAR99, HTSUS: 8536.49.0080) as the original component.

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