CMRD2445P Equivalent & Substitute Parts

Part Overview

The CMRD2445P is a Solid State SPST-NO (1 Form A) relay manufactured by Sensata-Crydom, designed for AC load switching applications with integrated heat sink and DIN Rail mounting. This component operates with 24–280V load voltage and 45A load current capacity, controlled by 3–32VDC input signals with zero-cross switching capability.

The CMRD2445P is classified as Obsolete. Equivalent and substitute parts are necessary to maintain system functionality and ensure continued availability for new designs and field replacements where the original component is no longer in production.

Key Parameters

Parameter	Value
Manufacturer Part Number	CMRD2445P
Manufacturer	Sensata-Crydom
Series	CMRA24
Circuit Type	SPST-NO (1 Form A)
Output Type	AC, Zero Cross
Voltage - Input	3 ~ 32VDC
Voltage - Load	24 V ~ 280 V
Load Current	45 A
Mounting Type	DIN Rail
Termination Style	Screw Terminal
Package / Case	SSR with Integrated Heat Sink
Product Status	Obsolete
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the CMRD2445P is determined by the following critical parameters:

Circuit configuration: SPST-NO (1 Form A) topology
Output switching type: AC with zero-cross capability
Input control voltage range: 3–32VDC minimum compatibility
Load current capacity: 45A minimum
Load voltage range: Must encompass or exceed 24–280V operating window
Mounting interface: DIN Rail compatibility
Termination: Screw Terminal connection
Package form: SSR with integrated heat sink

Two substitute parts meet these criteria with documented manufacturer equivalence:

DR4560D45P (Sensata-Crydom, Active): Maintains identical circuit topology, output type, and load current. Extends load voltage range to 48–600V and input voltage to 4–32VDC. DIN Rail mounted with screw terminals and integrated heat sink.

GNR45DCZP (Crouzet, Active): Maintains identical circuit topology and output type. Supports dual mounting (Chassis Mount and DIN Rail). Load current is 32A (below the 45A requirement) and load voltage range is 24–500V. Input voltage is 4–32VDC.

Parameter Comparison

Parameter	CMRD2445P	DR4560D45P	GNR45DCZP
Manufacturer	Sensata-Crydom	Sensata-Crydom	Crouzet
Circuit Type	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
Voltage - Input	3 ~ 32VDC	4 ~ 32VDC	4 ~ 32VDC
Voltage - Load	24 V ~ 280 V	48 V ~ 600 V	24 V ~ 500 V
Load Current	45 A	45 A	32 A
Mounting Type	DIN Rail	DIN Rail	Chassis Mount, DIN Rail
Termination Style	Screw Terminal	Screw Terminal	Screw Terminal
Package / Case	SSR with Integrated Heat Sink	SSR with Integrated Heat Sink	Module
Product Status	Obsolete	Active	Active
RoHS Status	RoHS Compliant	RoHS Compliant	RoHS Compliant

Engineering Selection Recommendations

DR4560D45P is the primary substitute for CMRD2445P. Both components are manufactured by Sensata-Crydom, share identical circuit topology and load current rating, and maintain full compatibility with DIN Rail mounting and screw terminal termination. DR4560D45P is in Active production status, ensuring long-term availability. The extended load voltage range (48–600V versus 24–280V) provides broader application flexibility without compromising the original operating window. RoHS compliance is maintained.

GNR45DCZP is a secondary substitute suitable only for applications where load current does not exceed 32A. The 32A rating falls below the CMRD2445P specification of 45A and represents a functional limitation. GNR45DCZP is manufactured by Crouzet and is in Active production status. It supports both Chassis Mount and DIN Rail configurations, offering installation flexibility. Load voltage range (24–500V) covers the original specification window. RoHS compliance is maintained.

Selection between DR4560D45P and GNR45DCZP depends on load current requirements: DR4560D45P for applications requiring the full 45A capacity; GNR45DCZP only where load current is confirmed below 32A.

Frequently Asked Questions (FAQ)

Q: Can DR4560D45P directly replace CMRD2445P in existing installations?

A: Yes. Both components share identical SPST-NO circuit topology, 45A load current capacity, AC zero-cross output type, DIN Rail mounting, and screw terminal termination. The extended load voltage range of DR4560D45P (48–600V) encompasses the original 24–280V operating window. Physical form factor and electrical interface are compatible.

Q: What is the primary limitation of GNR45DCZP as a substitute?

A: GNR45DCZP has a maximum load current rating of 32A, compared to the CMRD2445P specification of 45A. This component is suitable only for applications where actual load current does not exceed 32A. If your application requires the full 45A capacity, GNR45DCZP is not appropriate.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both DR4560D45P and GNR45DCZP are RoHS Compliant, matching the compliance status of CMRD2445P.

Q: What is the difference in package form between the substitutes?

A: CMRD2445P and DR4560D45P both use SSR with Integrated Heat Sink packaging. GNR45DCZP uses Module packaging. Both forms are suitable for DIN Rail mounting, though GNR45DCZP additionally supports Chassis Mount configuration.

Q: Which substitute has the longest production availability?

A: Both DR4560D45P and GNR45DCZP are classified as Active products, indicating current production and long-term availability. CMRD2445P is Obsolete and no longer manufactured.

Q: Can I use GNR45DCZP if my application only requires 30A load current?

A: Yes. If your application load current is confirmed at or below 32A, GNR45DCZP is electrically and mechanically compatible with CMRD2445P. Verify that the load voltage range (24–500V) and input control voltage (4–32VDC) meet your system requirements.

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