BZ-RW8422-A2 Equivalent & Substitute Parts

Part Overview

The BZ-RW8422-A2 is a snap action SPDT switch manufactured by Honeywell Sensing and Productivity Solutions. This chassis-mounted switch is rated for 15A at 125V AC with lever and roller actuator options and screw terminal connections. The product is currently classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing maintenance, repair, and design continuity in applications requiring SPDT snap action switching at this current and voltage rating.

Substiute Parts

BZ-RW8422-A2

Honeywell Sensing and Productivity SolutionsIn Stock: 908BZ-RW8422-A2 Datasheet

Current PartRFQ

TZ-1GV22

Omron Automation and SafetyIn Stock: 906TZ-1GV22 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZ-RW8422-A2 requires strict alignment with the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Circuit configuration must be SPDT
• Switch function must be On-Momentary
• Voltage rating must support 125V AC minimum
• Actuator type must include lever and/or roller options
• Mounting type must be chassis mount
• Termination style must be screw terminal

Secondary Compatibility Factors:

• Current rating must equal or exceed 15A AC
• Operating temperature range must encompass or exceed -55°C to 85°C
• Mechanical life must support 20,000,000 cycles or greater
• RoHS compliance status must be maintained

The substitute part TZ-1GV22 (Omron Automation and Safety) shares the core SPDT circuit, On-Momentary function, 125V AC voltage rating, lever and roller actuator, chassis mount configuration, and screw terminal termination. However, the current rating of TZ-1GV22 is specified as 1A AC/DC, which is significantly lower than the 15A AC requirement of the BZ-RW8422-A2. This current rating differential represents a fundamental incompatibility for applications requiring the full 15A switching capacity.

Parameter Comparison

Engineering Selection Recommendations

The TZ-1GV22 cannot serve as a direct functional equivalent to the BZ-RW8422-A2 for applications requiring 15A AC switching capacity. The current rating differential (1A versus 15A) represents a critical incompatibility that precludes substitution in circuits designed for the full 15A specification.

The TZ-1GV22 is suitable only for applications with current requirements of 1A AC or less. While the TZ-1GV22 offers advantages including active product status, extended operating temperature range (-65°C to 400°C), and ROHS3 compliance, these benefits do not offset the fundamental current rating mismatch.

For applications requiring 15A AC SPDT snap action switching with chassis mount configuration and screw terminal termination, alternative sources must be consulted to identify substitute parts with current ratings equal to or exceeding 15A AC while maintaining compatibility with the remaining electrical and mechanical parameters of the BZ-RW8422-A2.

Frequently Asked Questions (FAQ)

Q: Can the TZ-1GV22 replace the BZ-RW8422-A2 in my application?

A: The TZ-1GV22 cannot replace the BZ-RW8422-A2 if your application requires 15A AC switching. The TZ-1GV22 is rated for 1A AC/DC maximum. Using an undersized switch creates risk of thermal damage, contact degradation, and circuit failure.

Q: What makes these switches similar if the current ratings differ so significantly?

A: Both switches share identical circuit topology (SPDT), switch function (On-Momentary), voltage rating (125V AC), actuator type (Lever, Roller), mounting configuration (Chassis Mount), and termination style (Screw Terminal). However, electrical similarity in circuit function does not establish substitutability when current handling capacity differs by an order of magnitude.

Q: Is the BZ-RW8422-A2 still available?

A: The BZ-RW8422-A2 is classified as obsolete. Current inventory of 871 pieces is available through existing stock channels, but new production is not anticipated. Long-term availability cannot be guaranteed.

Q: What should I do if I need a replacement for the BZ-RW8422-A2?

A: Identify a substitute part that meets all critical parameters: SPDT circuit, On-Momentary function, 125V AC minimum voltage rating, 15A AC minimum current rating, lever and/or roller actuator, chassis mount configuration, and screw terminal termination. Consult with component distributors or manufacturers specializing in snap action switches to identify active alternatives meeting these specifications.

Q: Does the TZ-1GV22 offer any advantages over the BZ-RW8422-A2?

A: The TZ-1GV22 offers active product status, extended operating temperature range (-65°C to 400°C versus -55°C to 85°C), and ROHS3 compliance. However, these advantages apply only to applications with current requirements of 1A AC or less.

Q: What is the packaging difference between these parts?

A: The BZ-RW8422-A2 packaging is not specified in available documentation. The TZ-1GV22 is supplied in tray packaging. Packaging format does not affect electrical or mechanical compatibility but may influence handling, storage, and installation procedures.