GN350ALR Equivalent & Substitute Parts

Part Overview

The GN350ALR is a solid-state relay (SSR) manufactured by Sensata-Crydom, configured as a 3PST-NO (3 Form A) module with 50A load capacity. This component is designed for AC output switching applications across industrial control systems. The part is currently Active in product status with 945 units in stock. Alternative models become necessary when specific mounting requirements, input voltage ranges, or supply chain constraints necessitate component substitution while maintaining functional equivalence.

Substiute Parts

GN350ALR

Sensata-CrydomIn Stock: 963GN350ALR Datasheet

Current PartRFQ

GN350ASZH

CrouzetIn Stock: 1070GN350ASZH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The GN350ASZH qualifies as a substitute for the GN350ALR based on the following critical parameters:

• Circuit Configuration: Both parts maintain 3PST-NO (3 Form A) topology, ensuring identical switching logic and contact arrangement.
• Load Current: Both rated at 50 A, providing equivalent current-handling capacity.
• Output Type: Both support AC output switching with zero-cross capability in the substitute.
• Termination Style: Both utilize screw terminal connections, maintaining identical installation methodology.
• Load Voltage Range: The GN350ASZH supports 24 V ~ 510 V, which encompasses the GN350ALR range of 48 V ~ 600 V with partial overlap (48 V ~ 510 V).
• Compliance: Both are RoHS compliant, meeting environmental regulatory requirements.

The primary differences are mounting type (DIN Rail vs. Chassis/Panel Mount) and input voltage range (180 ~ 280 VAC vs. 24 ~ 255 VAC/DC), which must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the GN350ALR and GN350ASZH are Active products with current manufacturing status and full RoHS compliance. Selection between these parts depends on application-specific constraints:

• GN350ALR is appropriate for DIN Rail-mounted installations requiring input voltage in the 180 ~ 280 VAC range and load voltages up to 600 V.
• GN350ASZH is appropriate for Chassis or Panel Mount installations where input voltage can be supplied as 24 ~ 255 VAC/DC and load voltages do not exceed 510 V.

The GN350ASZH provides additional functionality through zero-cross switching capability and accepts DC input, expanding application flexibility. Both parts maintain identical load current capacity and circuit topology.

Frequently Asked Questions (FAQ)

Q: Can the GN350ASZH replace the GN350ALR in all applications?

A: Substitution is valid only when the application meets all of the following conditions: input voltage is within 24 ~ 255 VAC/DC range, load voltage does not exceed 510 V, and the mounting configuration supports Chassis or Panel Mount installation. If the application requires DIN Rail mounting or input voltages above 255 VAC, the GN350ALR is the required component.

Q: What is the significance of the zero-cross feature in the GN350ASZH?

A: Zero-cross switching synchronizes relay activation with the AC waveform zero-crossing point, reducing electromagnetic interference and switching transients. This feature is present in the GN350ASZH but not specified for the GN350ALR.

Q: Are both parts compatible with the same screw terminal connections?

A: Yes. Both the GN350ALR and GN350ASZH utilize screw terminal termination, ensuring identical wiring methodology and installation procedures.

Q: What is the difference in load voltage capability between these parts?

A: The GN350ALR supports load voltages from 48 V to 600 V, while the GN350ASZH supports 24 V to 510 V. The GN350ASZH cannot be used in applications requiring load voltages above 510 V or below 24 V.

Q: Do both parts meet current environmental compliance standards?

A: Yes. The GN350ALR is RoHS Compliant, and the GN350ASZH is ROHS3 Compliant. Both meet current environmental regulatory requirements. The GN350ASZH additionally carries REACH Unaffected status.