CMRD6045 Solid State Relay SPST-NO 45A 48-660V Equivalent & Substitute Parts

Part Overview

The CMRD6045 is a Solid State Relay (SSR) with SPST-NO (1 Form A) configuration, manufactured by Sensata-Crydom. This component features an integrated heat sink and DIN Rail mounting capability, designed for AC load switching applications with zero-cross detection. The CMRD6045 is designated as Last Time Buy, indicating discontinued production status. Equivalent and substitute parts are necessary to maintain system functionality and ensure continued availability for replacement and new applications.

Substiute Parts

CMRD6045

Sensata-CrydomIn Stock: 945CMRD6045 Datasheet

Current PartRFQ

GNR45DHZ

Sensata-CrydomIn Stock: 1278GNR45DHZ Datasheet

DirectRFQ

DR4560D45

Sensata TechnologiesIn Stock: 788DR4560D45 Datasheet

MFR RecommendedRFQ

GNR45DCZP

CrouzetIn Stock: 722GNR45DCZP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CMRD6045 is determined by electrical and mechanical compatibility across the following parameters:

• Circuit Configuration: All substitute parts must maintain SPST-NO (1 Form A) topology
• Output Type: AC switching with zero-cross detection is required
• Input Voltage: Control voltage range of 4 ~ 32VDC must be supported
• Load Current: Minimum 45 A rating required for direct substitution
• Load Voltage Range: Substitute parts must support the operating voltage window of the application
• Mounting Type: DIN Rail mounting capability is required
• Termination Style: Screw terminal connection is required
• RoHS Compliance: All substitute parts must maintain RoHS compliance status

Substitute parts are grouped into two categories: direct electrical equivalents (matching all key parameters) and functional alternatives (meeting core electrical requirements with minor parameter variations).

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: DR4560D45

The DR4560D45 is the manufacturer-recommended substitute for the CMRD6045. This part maintains Active product status, ensuring long-term availability and continued manufacturing support. The DR4560D45 matches all critical electrical parameters: 45 A load current, 4 ~ 32VDC input voltage, AC zero-cross output, and SPST-NO circuit configuration. Load voltage range is 48 V ~ 600 V, which covers the majority of applications within the CMRD6045 operating window. Both parts feature integrated heat sink packaging and DIN Rail mounting. RoHS compliance is maintained.

Secondary Substitute: GNR45DHZ

The GNR45DHZ is a direct electrical equivalent manufactured by Sensata-Crydom, matching the CMRD6045 across all key parameters except load voltage range (48 V ~ 600 V versus 48 V ~ 660 V). This part is designated Not For New Designs, indicating limited future availability. The GNR45DHZ is suitable for replacement applications where the load voltage does not exceed 600 V.

Functional Alternative: GNR45DCZP

The GNR45DCZP, manufactured by Crouzet, provides functional substitution with the following parameter variations: load current is 32 A (versus 45 A) and load voltage range is 24 V ~ 500 V (versus 48 V ~ 660 V). This part is suitable only for applications where load current does not exceed 32 A and load voltage remains within the 24 V ~ 500 V window. The GNR45DCZP maintains Active product status and supports both Chassis Mount and DIN Rail mounting configurations.

Frequently Asked Questions (FAQ)

Q: Can the GNR45DHZ directly replace the CMRD6045?

A: The GNR45DHZ is electrically compatible with the CMRD6045 for applications where load voltage does not exceed 600 V. The CMRD6045 supports operation up to 660 V. If your application requires the full 660 V capability, the GNR45DHZ is not suitable. For all other parameters, the parts are equivalent.

Q: What is the difference between the DR4560D45 and CMRD6045 packages?

A: Both parts feature integrated heat sink packaging and DIN Rail mounting. The primary difference is product status: the CMRD6045 is Last Time Buy (discontinued), while the DR4560D45 is Active (currently manufactured). Load voltage range differs slightly: DR4560D45 supports 48 V ~ 600 V versus CMRD6045 at 48 V ~ 660 V.

Q: Is the GNR45DCZP suitable as a substitute for the CMRD6045?

A: The GNR45DCZP is a functional alternative only for applications meeting both of these conditions: load current does not exceed 32 A and load voltage remains within 24 V ~ 500 V. The CMRD6045 is rated for 45 A and supports up to 660 V. If your application requires the full 45 A current rating or operates above 500 V, the GNR45DCZP is not suitable.

Q: Do all substitute parts maintain RoHS compliance?

A: Yes. The CMRD6045, GNR45DHZ, DR4560D45, and GNR45DCZP are all RoHS Compliant.

Q: What is the significance of the "Not For New Designs" status on the GNR45DHZ?

A: This designation indicates that the GNR45DHZ is no longer recommended for new product designs. While the part remains available for replacement and legacy applications, the manufacturer does not guarantee continued production. For new designs, the DR4560D45 (Active status) is the recommended choice.

Q: Can I use the GNR45DCZP in a 45 A application?

A: No. The GNR45DCZP is rated for a maximum load current of 32 A. Using this part in a 45 A application exceeds its electrical rating and is not permitted.