GN350ALZ Equivalent & Substitute Parts

Part Overview

The GN350ALZ is a solid-state relay (SSR) manufactured by Sensata-Crydom, configured as a 3PST-NO (3 Form A) module with 50A load current capacity. This component is designed for AC switching applications with zero-cross detection, operating across input voltages of 180–280VAC and load voltages from 48V to 600V. The part is currently active in production and RoHS compliant, making it suitable for industrial control and automation systems requiring reliable AC switching without mechanical contacts.

Finding equivalent or substitute parts becomes necessary when the primary part is unavailable, when alternative mounting configurations are required, or when load voltage specifications differ from application requirements.

Substiute Parts

GN350ALZ

Sensata-CrydomIn Stock: 1197GN350ALZ Datasheet

Current PartRFQ

GN350ASZH

CrouzetIn Stock: 1070GN350ASZH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The GN350ASZH qualifies as a substitute for the GN350ALZ based on the following critical parameters:

• Circuit Configuration: Both parts are 3PST-NO (3 Form A) solid-state relays, ensuring identical switching topology and control logic compatibility.
• Load Current: Both parts support 50A load current, maintaining equivalent power handling capacity.
• Output Type: Both employ AC switching with zero-cross detection, ensuring compatible switching characteristics.
• Termination Style: Both use screw terminals, allowing direct connection compatibility.
• Series Designation: Both belong to the GN3 series, confirming design family alignment.
• RoHS Compliance: Both meet RoHS standards, satisfying environmental and regulatory requirements.

Key Differences Requiring Evaluation:

• Input Voltage Range: GN350ALZ operates at 180–280VAC; GN350ASZH operates at 24–255VAC/DC. The substitute has a lower maximum input voltage and adds DC input capability.
• Load Voltage Range: GN350ALZ supports 48–600V; GN350ASZH supports 24–510V. The substitute has a lower maximum load voltage.
• Mounting Type: GN350ALZ uses DIN Rail mounting; GN350ASZH uses Chassis Mount or Panel Mount configuration.

Parameter Comparison

Engineering Selection Recommendations

GN350ALZ remains the primary choice when:

• Input voltage requirements exceed 255VAC
• Load voltage requirements exceed 510V
• DIN Rail mounting is mandatory for the installation environment
• The application operates exclusively on AC input power

GN350ASZH is suitable as a substitute when:

• Input voltage does not exceed 255VAC and DC input capability is acceptable
• Load voltage does not exceed 510V
• Chassis Mount or Panel Mount configuration is compatible with the installation environment
• Both parts are active in production and meet current RoHS compliance standards

Both parts maintain identical switching performance characteristics (50A, 3PST-NO, AC zero-cross output) and are suitable for industrial control applications requiring solid-state relay functionality.

Frequently Asked Questions (FAQ)

Q: Can GN350ASZH directly replace GN350ALZ in all applications?

A: No. The substitute has lower maximum input voltage (255VAC vs. 280VAC) and lower maximum load voltage (510V vs. 600V). Verify that your application operates within the GN350ASZH voltage specifications before substitution. Additionally, the mounting configuration differs (Chassis/Panel Mount vs. DIN Rail), requiring mechanical redesign of the installation.

Q: What is the significance of the input voltage difference?

A: The GN350ALZ accepts input voltages up to 280VAC, while the GN350ASZH accepts up to 255VAC. If your control circuit operates at 280VAC, the GN350ASZH will not function. Confirm your actual input voltage before selecting a substitute.

Q: Does the GN350ASZH support DC input?

A: Yes. The GN350ASZH input specification is 24–255VAC/DC, meaning it accepts both AC and DC input signals. The GN350ALZ accepts only AC input (180–280VAC). This expanded input capability may be advantageous in certain control architectures.

Q: Are the load voltage ranges compatible?

A: No. The GN350ALZ supports load voltages from 48V to 600V, while the GN350ASZH supports 24V to 510V. If your application requires load voltages above 510V, the GN350ASZH cannot be used. Both parts support the lower range (48–510V), making substitution viable only within this overlap.

Q: What mounting considerations apply to substitution?

A: The GN350ALZ is designed for DIN Rail mounting, a standard industrial form factor. The GN350ASZH requires Chassis Mount or Panel Mount installation. Substitution requires mechanical redesign of the mounting structure and may affect installation time and cost.

Q: Are both parts currently available?

A: Yes. Both the GN350ALZ (1105 pcs) and GN350ASZH (985 pcs) are listed as active products with current inventory. Availability should be confirmed with your supplier before finalizing component selection.

Q: Do both parts meet current environmental compliance standards?

A: Yes. The GN350ALZ is RoHS Compliant, and the GN350ASZH is ROHS3 Compliant. Both meet current environmental and regulatory requirements for industrial applications. The GN350ASZH also carries REACH Unaffected status.