GNR45BHZ Solid State Relay - Equivalent & Substitute Parts

Part Overview

The GNR45BHZ is a Solid State Relay (SSR) with SPST-NO (1 Form A) configuration, rated for 45A load current at 48V to 600V output voltage range. This module features DIN Rail mounting and screw terminal connections, designed for AC applications with zero-cross switching capability. The GNR45BHZ is classified as obsolete, making identification of active equivalent parts essential for ongoing system maintenance and new procurement requirements.

Substiute Parts

GNR45BHZ

Sensata-CrydomIn Stock: 877GNR45BHZ 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

Substitution of the GNR45BHZ is based on strict equivalence of the following critical parameters:

• Circuit configuration: SPST-NO (1 Form A) topology
• Load current rating: 45A minimum
• Load voltage range: 48V to 600V minimum span
• Output type: AC with zero-cross switching
• Mounting interface: DIN Rail compatibility
• Termination: Screw Terminal connections
• Compliance: RoHS Compliant status

The substitute parts DR4560A45 and DR4560A45P meet all functional and mechanical requirements for direct replacement. Both are active products from the same manufacturer (Sensata-Crydom) with identical circuit topology, current rating, and voltage specifications. The primary difference between substitutes is the input voltage range expansion and integrated heat sink design, which provides enhanced thermal management without affecting load-side compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both DR4560A45 and DR4560A45P are qualified replacements for the obsolete GNR45BHZ. Selection between the two active substitutes should be based on procurement availability and packaging requirements, as both maintain identical electrical specifications and RoHS compliance status.

The DR4560A45 and DR4560A45P feature expanded input voltage range (90 ~ 280VAC/DC versus the original 90 ~ 140VAC), providing broader operational flexibility in control circuit applications. The integrated heat sink design in both substitutes improves thermal dissipation characteristics compared to the original module configuration, supporting reliable operation in demanding thermal environments.

Both substitute parts are manufactured by Sensata-Crydom and carry active product status, ensuring long-term availability and supply chain continuity for system maintenance and new installations.

Frequently Asked Questions (FAQ)

Q: Can DR4560A45 and DR4560A45P be used interchangeably with GNR45BHZ?

A: Both DR4560A45 and DR4560A45P are direct functional equivalents for GNR45BHZ. They maintain identical load current rating (45A), load voltage range (48V ~ 600V), circuit topology (SPST-NO), and mounting interface (DIN Rail with screw terminals). Both are active products with RoHS compliance.

Q: What is the primary difference between DR4560A45 and DR4560A45P?

A: Both parts share identical electrical specifications and load ratings. The DR4560A45P includes moisture sensitivity level designation, while DR4560A45 specifies MSL 1 (Unlimited). Both feature integrated heat sink design and expanded input voltage range compared to the original GNR45BHZ.

Q: Does the integrated heat sink in substitute parts affect mechanical compatibility?

A: The integrated heat sink design in DR4560A45 and DR4560A45P maintains DIN Rail mounting compatibility and screw terminal connections identical to GNR45BHZ. The enhanced thermal management does not compromise mechanical fit or electrical interface requirements.

Q: Are the substitute parts RoHS compliant?

A: Both DR4560A45 and DR4560A45P are RoHS Compliant, matching the compliance status of the original GNR45BHZ.

Q: What is the advantage of the expanded input voltage range in substitute parts?

A: The substitute parts accept 90 ~ 280VAC/DC input versus the original 90 ~ 140VAC specification. This expanded range provides operational flexibility across broader control circuit voltage standards without requiring additional interface components.