BZ-2RW8761-A2 Equivalent & Substitute Parts

Part Overview

The BZ-2RW8761-A2 is a snap action SPDT switch manufactured by Honeywell Sensing and Productivity Solutions. This chassis mount switch is rated for 15A AC at 125V and 500mA DC at 125V, featuring a straight lever actuator with screw terminal connections. The product is Active status and RoHS Compliant, designed for applications requiring reliable switching with mechanical life rated at 20,000,000 cycles. Substitute parts are identified when equivalent electrical and mechanical specifications are required but original inventory is unavailable or alternative sourcing is necessary.

Substiute Parts

BZ-2RW8761-A2

Honeywell Sensing and Productivity SolutionsIn Stock: 1250BZ-2RW8761-A2 Datasheet

Current PartRFQ

TZ-1G

Omron Automation and SafetyIn Stock: 1058TZ-1G Datasheet

SimilarRFQ

Z-01HD55-B

Omron Automation and SafetyIn Stock: 1035Z-01HD55-B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZ-2RW8761-A2 is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Circuit configuration must be SPDT
• Switch function must be On-Mom
• Mounting type must be Chassis Mount
• Termination style must be Screw Terminal
• Voltage rating must support minimum 125V AC operation
• Product status must be Active

Secondary Compatibility Factors:

• Current rating compatibility with application requirements
• Operating temperature range suitability
• Mechanical life cycle requirements
• Actuator type and operating force characteristics
• Packaging format (Bulk or Tray)

The identified substitute parts TZ-1G and Z-01HD55-B share the core SPDT circuit, On-Mom function, chassis mount configuration, and screw terminal termination. However, each substitute exhibits different current ratings, temperature ranges, and mechanical characteristics that must be evaluated against specific application demands.

Parameter Comparison

Engineering Selection Recommendations

BZ-2RW8761-A2 Primary Selection: The BZ-2RW8761-A2 remains the specified component for applications requiring 15A AC switching at 125V with straight lever actuation. This part is Active status, RoHS Compliant, and rated for 20,000,000 mechanical cycles. Selection is appropriate for high-current AC switching applications with standard operating temperature ranges.

TZ-1G Substitution Constraints: The TZ-1G is suitable only for applications with reduced current requirements (1A AC maximum at 125V). The significantly lower mechanical life (100,000 cycles versus 20,000,000 cycles) and different actuator type (round pin plunger versus straight lever) restrict its use to low-current switching scenarios. Extended temperature capability (-65°C to 400°C) may benefit specialized thermal environments. ROHS3 Compliant status meets current regulatory requirements.

Z-01HD55-B Substitution Constraints: The Z-01HD55-B is limited to very low-current applications (100mA AC maximum at 125V). Mechanical life matches the main part at 20,000,000 cycles, but the round pin plunger actuator and IP62 ingress protection indicate a different mechanical interface. Operating temperature range (-15°C to 80°C) is narrower than the main part. RoHS Compliant status is maintained. This substitute is applicable only when current requirements are below 100mA.

Compliance Summary: All three parts maintain RoHS compliance and MSL 1 rating. Selection between main part and substitutes must be driven by specific current, temperature, and mechanical life requirements of the target application.

Frequently Asked Questions (FAQ)

Q: Can TZ-1G replace BZ-2RW8761-A2 in a 15A AC circuit?

A: No. The TZ-1G is rated for maximum 1A AC at 125V, while the BZ-2RW8761-A2 is rated for 15A AC. Using TZ-1G in a 15A circuit will result in component failure and potential safety hazards.

Q: What is the primary difference in actuator design between the main part and substitutes?

A: The BZ-2RW8761-A2 uses a straight lever actuator, while both TZ-1G and Z-01HD55-B use round pin plunger actuators. This affects mechanical interface, mounting orientation, and actuation force characteristics.

Q: Are all three parts suitable for the same operating temperature range?

A: No. The BZ-2RW8761-A2 operates from -55°C to 85°C. The TZ-1G extends to -65°C to 400°C, while the Z-01HD55-B is limited to -15°C to 80°C. Application temperature requirements must be verified before substitution.

Q: What is the mechanical life difference between the main part and TZ-1G?

A: The BZ-2RW8761-A2 is rated for 20,000,000 mechanical cycles, while the TZ-1G is rated for only 100,000 cycles. This 200-fold difference makes TZ-1G unsuitable for high-cycle applications.

Q: Do packaging differences affect electrical performance?

A: No. The BZ-2RW8761-A2 and Z-01HD55-B are supplied in Bulk packaging, while TZ-1G is supplied in Tray packaging. Packaging format does not affect electrical or mechanical specifications, only handling and storage considerations.

Q: Can Z-01HD55-B substitute for BZ-2RW8761-A2 in a 5A AC application?

A: No. The Z-01HD55-B is rated for maximum 100mA AC at 125V, which is insufficient for a 5A application. Current rating is a non-negotiable substitution criterion.

Q: What does IP62 ingress protection on Z-01HD55-B indicate?

A: IP62 rating indicates protection against limited dust ingress and water spray from any direction. The BZ-2RW8761-A2 does not specify ingress protection, suggesting standard industrial enclosure requirements. Z-01HD55-B is suitable for applications requiring enhanced environmental protection.

Q: Are all parts RoHS compliant?

A: Yes. The BZ-2RW8761-A2 and Z-01HD55-B are RoHS Compliant. The TZ-1G is ROHS3 Compliant, which represents the current regulatory standard. All three parts meet RoHS requirements.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 indicates the component has unlimited shelf life under standard storage conditions and requires no special moisture control during handling or storage. All three parts carry this rating.