GNR20AHZ Solid State Relay - Equivalent & Substitute Parts

Part Overview

The GNR20AHZ is a Solid State Relay (SSR) with SPST-NO (1 Form A) configuration, rated for 20A load current across 48V to 600V output range. Manufactured by Sensata Technologies, this component features DIN Rail mounting and screw terminal connections for AC applications with zero-cross switching capability.

The GNR20AHZ is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain system functionality and ensure continued availability for new designs and field replacements.

Key Parameters

Parameter	Value
Circuit Configuration	SPST-NO (1 Form A)
Load Current Rating	20 A
Output Voltage Range	48 V ~ 600 V
Input Voltage Range	180 ~ 280 VAC
Output Type	AC, Zero Cross
Mounting Type	DIN Rail
Termination Style	Screw Terminal
Package Type	Module

Substitute Part Grouping Explanation

Substitute parts for the GNR20AHZ are qualified based on the following critical parameters:

Circuit Configuration: Must be SPST-NO (1 Form A) to maintain identical switching functionality
Load Current Rating: Must be rated for 20 A minimum
Output Voltage Range: Must support the full 48 V to 600 V range or higher
Input Voltage Compatibility: Must operate within or encompass the 180 ~ 280 VAC input range
Output Type: Must feature AC switching with zero-cross capability
Termination: Must use screw terminal connections for direct installation compatibility
Mounting: Must support DIN Rail mounting for form-factor compatibility

Two substitute parts meet these criteria: DR2260A20U (Sensata-Crydom) and GNR20ACZH (Crouzet).

Parameter Comparison

Parameter	GNR20AHZ (Main)	DR2260A20U (Substitute)	GNR20ACZH (Substitute)
Manufacturer	Sensata Technologies	Sensata-Crydom	Crouzet
Product Status	Obsolete	Active	Active
Circuit Configuration	SPST-NO (1 Form A)	SPST-NO (1 Form A)	SPST-NO (1 Form A)
Load Current Rating	20 A	20 A	20 A
Output Voltage Range	48 V ~ 600 V	48 V ~ 600 V	48 V ~ 660 V
Input Voltage Range	180 ~ 280 VAC	90 ~ 280 VAC/DC	180 ~ 280 VAC
Output Type	AC, Zero Cross	AC, Zero Cross	AC, Zero Cross
Mounting Type	DIN Rail	DIN Rail	Chassis Mount, DIN Rail
Termination Style	Screw Terminal	Screw Terminal	Screw Terminal
Package Type	Module	SSR with Integrated Heat Sink	Module
RoHS Status	RoHS Compliant	ROHS3 Compliant	RoHS Compliant

Engineering Selection Recommendations

DR2260A20U is the manufacturer-recommended substitute. This part is actively produced by Sensata-Crydom and maintains full electrical compatibility with the GNR20AHZ. The DR2260A20U features an integrated heat sink, which provides enhanced thermal management compared to the original part. Input voltage range extends to 90 VAC/DC, offering broader operational flexibility. ROHS3 compliance and REACH affected status reflect current regulatory standards.

GNR20ACZH is a direct manufacturer alternative produced by Crouzet. This part maintains identical input voltage specifications (180 ~ 280 VAC) and supports an extended output voltage range (48 V ~ 660 V). The GNR20ACZH is actively produced and RoHS compliant. Mounting flexibility includes both chassis mount and DIN Rail options. This part is REACH unaffected.

Both substitutes are actively produced and provide direct functional equivalence to the obsolete GNR20AHZ. Selection between them depends on thermal management requirements (DR2260A20U with integrated heat sink) and mounting flexibility preferences (GNR20ACZH with dual mounting options).

Frequently Asked Questions (FAQ)

Q: Can DR2260A20U replace GNR20AHZ in existing installations?

A: Yes. The DR2260A20U maintains identical circuit configuration, load current rating, output voltage range, and termination style. The integrated heat sink provides equivalent or improved thermal performance. Input voltage range compatibility is maintained within the 180 ~ 280 VAC operating window.

Q: What is the difference between the two substitute parts?

A: DR2260A20U includes an integrated heat sink for enhanced thermal dissipation and accepts DC input (90 ~ 280 VAC/DC). GNR20ACZH offers dual mounting options (chassis mount and DIN Rail) and supports a slightly higher output voltage ceiling (660 V vs. 600 V). Both maintain identical switching characteristics and load ratings.

Q: Are there packaging differences between the main part and substitutes?

A: The GNR20AHZ and GNR20ACZH are both standard modules. The DR2260A20U is packaged as an SSR with integrated heat sink. All three use screw terminal connections and support DIN Rail mounting. Physical dimensions may vary; verify mounting clearance in your application.

Q: Do the substitutes meet current compliance standards?

A: Yes. Both DR2260A20U (ROHS3 compliant, REACH affected) and GNR20ACZH (RoHS compliant, REACH unaffected) meet current regulatory requirements. The original GNR20AHZ is RoHS compliant but obsolete.

Q: Can these parts be used interchangeably in new designs?

A: Yes. Both substitute parts are actively produced and provide full functional equivalence. DR2260A20U is the manufacturer-recommended option. GNR20ACZH offers alternative sourcing and mounting flexibility. Select based on thermal management needs and supply chain availability.

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