GNR45DCZ Equivalent & Substitute Parts

Part Overview

The GNR45DCZ is a Solid State Relay (SSR) SPST-NO module manufactured by Sensata-Crydom, rated for 45A load current with input voltage range of 4–32VDC and output voltage range of 48–600V. The device features AC zero-cross switching, screw terminal connections, and DIN Rail mounting. This part is classified as Not For New Designs, making identification of active equivalent and substitute parts essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

GNR45DCZ

Sensata-CrydomIn Stock: 797GNR45DCZ Datasheet

Current PartRFQ

DR4560D45P

Sensata-CrydomIn Stock: 1054DR4560D45P Datasheet

MFR RecommendedRFQ

GNR45DCZP

CrouzetIn Stock: 722GNR45DCZP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GNR45DCZ is determined by the following critical parameters:

• Circuit Configuration: SPST-NO (1 Form A) — substitute parts must maintain identical switching topology
• Input Voltage Range: 4–32VDC — substitute parts must accommodate this control signal range
• Output Voltage Range: 48–600V — substitute parts must support this load voltage specification
• Load Current Rating: 45A — substitute parts must meet or exceed this current capacity
• Switching Characteristic: AC, Zero Cross — substitute parts must employ identical zero-cross detection
• Mounting Interface: DIN Rail — substitute parts must support DIN Rail installation
• Termination: Screw Terminal — substitute parts must use compatible terminal connections

Two substitute parts meet these criteria with noted parameter variations:

1. DR4560D45P (Sensata-Crydom) — Identical electrical specifications with integrated heat sink; Active product status
2. GNR45DCZP (Crouzet) — Reduced load current (32A vs. 45A) and reduced maximum output voltage (500V vs. 600V); Active product status with dual mounting options

Parameter Comparison

Engineering Selection Recommendations

DR4560D45P is the primary substitute for GNR45DCZ applications. Both parts are manufactured by Sensata-Crydom and share identical electrical specifications: 45A load current, 48–600V output voltage range, and 4–32VDC input range. DR4560D45P holds Active product status and includes an integrated heat sink, providing thermal management advantages in high-duty-cycle applications. Both parts are RoHS compliant and suitable for direct replacement in existing designs.

GNR45DCZP is a secondary substitute with parameter limitations. Manufactured by Crouzet, this part reduces load current capacity to 32A and maximum output voltage to 500V. GNR45DCZP is suitable only for applications where load current does not exceed 32A and output voltage remains below 500V. This part offers dual mounting flexibility (Chassis Mount and DIN Rail) and holds Active product status with RoHS compliance.

Selection between DR4560D45P and GNR45DCZP depends on application load requirements. For applications requiring the full 45A capacity and 600V output voltage range, DR4560D45P is the only viable substitute. For applications with reduced current and voltage demands, GNR45DCZP provides an alternative from an established manufacturer.

Frequently Asked Questions (FAQ)

Q: Can DR4560D45P directly replace GNR45DCZ in all applications?

A: Yes. DR4560D45P maintains identical electrical specifications (45A, 48–600V, 4–32VDC, AC zero-cross) and mounting interface (DIN Rail, screw terminal). The integrated heat sink provides additional thermal management without affecting electrical compatibility.

Q: What are the limitations of GNR45DCZP as a substitute?

A: GNR45DCZP reduces load current to 32A and maximum output voltage to 500V. It is suitable only for applications where load current does not exceed 32A and output voltage remains below 500V. Applications requiring 45A or voltages above 500V must use DR4560D45P.

Q: Are all substitute parts RoHS compliant?

A: Yes. GNR45DCZ is ROHS3 compliant. Both DR4560D45P and GNR45DCZP are RoHS compliant, meeting environmental regulatory requirements.

Q: Does the integrated heat sink on DR4560D45P affect installation?

A: No. DR4560D45P maintains DIN Rail mounting compatibility and screw terminal connections identical to GNR45DCZ. The integrated heat sink does not alter the mounting footprint or electrical interface.

Q: Can GNR45DCZP be used in applications currently using GNR45DCZ?

A: Only if the application load current does not exceed 32A and output voltage remains below 500V. Applications operating at the full 45A rating or above 500V output voltage require DR4560D45P.

Q: What is the difference between Module and SSR with Integrated Heat Sink packaging?

A: Both are DIN Rail-mountable modules with screw terminals. The SSR with Integrated Heat Sink (DR4560D45P) includes passive thermal management for improved heat dissipation in high-current applications. The standard Module (GNR45DCZ, GNR45DCZP) relies on ambient cooling or external heat management.