GNR45AHZ Solid State Relay - Equivalent & Substitute Parts

Part Overview

The GNR45AHZ is a Solid State Relay (SSR) manufactured by Sensata-Crydom, configured as a SPST-NO (Single Pole Single Throw - Normally Open) module with 45A load current capacity and 48V to 600V output voltage range. This component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing system maintenance and new design implementations.

The GNR45AHZ operates with AC zero-cross switching and accepts input voltage from 180V to 280VAC. Its DIN Rail mounting configuration and screw terminal termination style make it suitable for industrial control applications requiring solid-state switching without mechanical contacts.

Substiute Parts

GNR45AHZ

Sensata-CrydomIn Stock: 1144GNR45AHZ Datasheet

Current PartRFQ

DR4560A45

Sensata-CrydomIn Stock: 876DR4560A45 Datasheet

MFR RecommendedRFQ

DR4560A45P

Sensata-CrydomIn Stock: 976DR4560A45P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the GNR45AHZ are qualified based on strict electrical and mechanical parameter alignment:

Critical Matching Parameters:

• Circuit configuration: SPST-NO (1 Form A)
• Load current capacity: 45 A
• Output voltage range: 48 V ~ 600 V
• Output switching type: AC, Zero Cross
• Mounting interface: DIN Rail
• Termination method: Screw Terminal
• RoHS compliance status

The substitute parts DR4560A45 and DR4560A45P both satisfy these core requirements. Both are active-status components from the same manufacturer (Sensata-Crydom), ensuring design continuity and supply chain reliability. The primary distinction between substitutes lies in input voltage range capability and package configuration, detailed in the comparison table below.

Parameter Comparison

Engineering Selection Recommendations

Both DR4560A45 and DR4560A45P are qualified substitutes for the obsolete GNR45AHZ based on electrical parameter equivalence and active product status from the original manufacturer.

DR4560A45 is the manufacturer-recommended primary substitute. It maintains full electrical compatibility with the GNR45AHZ while offering expanded input voltage capability (90V to 280VAC/DC versus 180V to 280VAC). The integrated heat sink design provides improved thermal management compared to the original module configuration. This part carries active product status and RoHS compliance certification.

DR4560A45P provides an alternative substitute with identical electrical specifications to DR4560A45. The primary distinction is packaging designation (Bulk versus standard packaging). This part also maintains active product status and RoHS compliance.

Both substitutes are suitable for direct replacement in applications where the GNR45AHZ was originally specified, provided that the expanded input voltage range of the DR series does not introduce incompatibility with existing control circuitry. The integrated heat sink feature of both substitutes may require evaluation of mounting clearance in existing installations.

Frequently Asked Questions (FAQ)

Q: Can DR4560A45 and DR4560A45P be used interchangeably?

A: Yes. Both parts are electrically and mechanically equivalent. The distinction between them is packaging designation. Selection between the two depends on procurement and inventory management requirements rather than functional performance.

Q: What is the primary advantage of the substitute parts over the GNR45AHZ?

A: The DR4560A45 and DR4560A45P offer active product status, ensuring ongoing availability and manufacturer support. Both incorporate integrated heat sink design for improved thermal performance. The expanded input voltage range (90V to 280VAC/DC) provides greater flexibility in control circuit design compared to the original 180V to 280VAC specification.

Q: Are there any mechanical installation differences between the GNR45AHZ and substitute parts?

A: All three parts share DIN Rail mounting and screw terminal termination. The integrated heat sink on the DR series may require additional mounting clearance verification in existing installations. Physical dimensions should be confirmed against the specific application layout.

Q: Do the substitute parts maintain RoHS compliance?

A: Yes. Both DR4560A45 and DR4560A45P are RoHS Compliant, matching the compliance status of the original GNR45AHZ.

Q: Is the expanded input voltage range of the DR series a concern for existing applications?

A: The expanded input range (90V to 280VAC/DC) is a superset of the original GNR45AHZ specification (180V to 280VAC). This expansion does not create incompatibility with existing control circuits designed for the original part. The substitute parts will operate correctly within the original voltage specification range.