Honeywell BZ-2RW876T Snap Action Switch: Equivalent & Substitute Parts

Part Overview

The Honeywell BZ-2RW876T is an active-status SPDT snap action switch designed for chassis mount applications. This switch delivers 15A AC and 500mA DC switching capacity at 125V AC/DC ratings, featuring a straight lever actuator with screw terminal connections. The component is specified for industrial control and switching applications requiring reliable on-momentary operation across an operating temperature range of -55°C to 85°C.

Substitute parts become necessary when inventory constraints exist, when specific actuator types or mechanical characteristics better suit application requirements, or when alternative manufacturers' components meet the electrical and mechanical parameters of the target application.

Substiute Parts

BZ-2RW876T

Honeywell Sensing and Productivity SolutionsIn Stock: 843BZ-2RW876T 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 eligibility for the BZ-2RW876T is determined by the following critical parameters:

Primary Electrical Compatibility Criteria:

• Circuit configuration must be SPDT
• Switch function must be On-Momentary
• Voltage rating must support minimum 125V AC operation
• Current rating must accommodate the application's maximum current demand

Secondary Mechanical Compatibility Criteria:

• Mounting type must be Chassis Mount
• Termination style must be Screw Terminal
• Actuator type may vary (lever, plunger, or pin configurations are acceptable alternatives)
• Operating temperature range must encompass the application's thermal requirements

Regulatory and Compliance Criteria:

• RoHS compliance status must be active or equivalent
• Product status must be Active

The substitute parts identified—Omron TZ-1G and Omron Z-01HD55-B—share the core SPDT circuit, On-Momentary function, 125V AC rating, chassis mount configuration, and screw terminal termination. However, both substitutes operate at reduced current ratings compared to the main part, requiring application-level current demand verification before selection.

Parameter Comparison

Engineering Selection Recommendations

BZ-2RW876T (Primary Selection): The Honeywell BZ-2RW876T remains the primary component for applications requiring 15A AC switching capacity. Active product status and RoHS compliance confirm ongoing manufacturer support and regulatory alignment. This part is suitable for general-purpose industrial switching applications within the specified temperature and voltage parameters.

TZ-1G (Omron) - Limited Substitution: The Omron TZ-1G is electrically compatible only for applications with maximum current demand of 1A AC or 1A DC. The reduced current rating represents a significant limitation compared to the main part. ROHS3 compliance and active product status confirm regulatory standing. The extended operating temperature range (-65°C to 400°C) provides thermal capability beyond the main part, but this advantage is offset by substantially lower current capacity and reduced mechanical life (100,000 cycles versus 20,000,000 cycles).

Z-01HD55-B (Omron) - Severely Limited Substitution: The Omron Z-01HD55-B is electrically compatible only for applications with maximum current demand of 100mA AC or 100mA DC. This represents a 150:1 reduction in AC current capacity relative to the main part. RoHS compliance and active product status are confirmed. Mechanical life matches the main part at 20,000,000 cycles. The DC voltage rating is limited to 30V, creating incompatibility with 125V DC applications. Operating temperature range (-15°C to 80°C) is narrower than the main part.

Selection Logic:

• For applications requiring ≥15A AC capacity: Use BZ-2RW876T
• For applications requiring 1A AC capacity with extended temperature tolerance: Use TZ-1G
• For applications requiring ≤100mA AC capacity with high mechanical cycle requirements: Use Z-01HD55-B

Frequently Asked Questions (FAQ)

Q: Can the Omron TZ-1G replace the Honeywell BZ-2RW876T in all applications?

A: No. The TZ-1G current rating of 1A AC is insufficient for applications requiring the BZ-2RW876T's 15A AC capacity. Substitution is valid only when the application's maximum current demand does not exceed 1A AC.

Q: What is the primary difference between the TZ-1G and Z-01HD55-B substitutes?

A: The TZ-1G provides 1A AC/DC current capacity, while the Z-01HD55-B provides 100mA AC/DC capacity. The TZ-1G also supports higher DC voltage (30V) and offers extended operating temperature range (-65°C to 400°C). The Z-01HD55-B provides superior electrical life (500,000 cycles) but lower mechanical life (100,000 cycles).

Q: Are all three parts compatible with 125V AC applications?

A: Yes. All three parts—BZ-2RW876T, TZ-1G, and Z-01HD55-B—are rated for 125V AC operation. However, for 125V DC applications, only the BZ-2RW876T is rated. Both Omron substitutes are limited to 30V DC maximum.

Q: Does the actuator type difference affect substitution eligibility?

A: Actuator type differences (lever versus pin plunger) do not prevent electrical substitution. However, mechanical integration into the application enclosure or control panel may require design modification. The straight lever actuator of the BZ-2RW876T differs mechanically from the round pin plunger design of both Omron parts.

Q: What packaging formats are available for these parts?

A: BZ-2RW876T is supplied in standard packaging (format not specified). TZ-1G is supplied in Tray packaging. Z-01HD55-B is supplied in Bulk packaging. Packaging format may affect procurement quantity minimums and handling requirements.

Q: Are all three parts RoHS compliant?

A: Yes. BZ-2RW876T and Z-01HD55-B are RoHS Compliant. TZ-1G is ROHS3 Compliant. Both compliance levels satisfy current regulatory requirements for electronic component manufacturing and distribution.

Q: Which substitute part has the longest mechanical life?

A: Both BZ-2RW876T and Z-01HD55-B are rated for 20,000,000 mechanical cycles. TZ-1G is rated for only 100,000 cycles, making it unsuitable for high-cycle-count applications.