BZ-7RW855T-S Equivalent & Substitute Parts

Part Overview

The BZ-7RW855T-S 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 features a straight lever actuator with screw terminal connections. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing maintenance, repair, and system support applications. The BZ-7 series design provides reliable on-momentary switching functionality with mechanical life rated at 20,000,000 cycles.

Substiute Parts

BZ-7RW855T-S

Honeywell Sensing and Productivity SolutionsIn Stock: 962BZ-7RW855T-S Datasheet

Current PartRFQ

V3L-1084

Honeywell Sensing and Productivity SolutionsIn Stock: 978V3L-1084 Datasheet

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GPTBLS11

ZF ElectronicsIn Stock: 979GPTBLS11 Datasheet

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GPTCLS11

ZF ElectronicsIn Stock: 1170GPTCLS11 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZ-7RW855T-S is determined by strict equivalence in the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Circuit configuration: SPDT
• Switch function: On-Momentary
• Current rating: 15A AC minimum
• Voltage rating: 125V AC minimum
• Actuator type: Lever, Straight
• Mounting type: Chassis Mount
• Termination style: Screw Terminal (for direct replacement)

Secondary Compatibility Factors:

• Operating force and release force characteristics
• Mechanical life rating
• RoHS compliance status
• Moisture sensitivity level

The substitute parts identified (V3L-1084, GPTBLS11, GPTCLS11) share the core electrical specifications and mounting configuration. However, variations exist in mechanical parameters such as operating position, pretravel, differential travel, and overtravel distances. These variations must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

V3L-1084 (Honeywell): This substitute maintains identical electrical ratings (15A AC, 500mA DC, 125V AC/DC) and mechanical force characteristics (113gf operating force, 14gf release force) as the BZ-7RW855T-S. Both parts are RoHS Compliant with MSL 1 rating. The primary difference is termination style: V3L-1084 uses solder lug termination versus screw terminal on the original part. This substitute is suitable for applications where solder lug connection is acceptable and where operating temperature range is within standard industrial limits. Product status is Active, ensuring continued availability.

GPTCLS11 (ZF Electronics): This substitute provides electrical equivalence at 15A AC and 125V AC with identical release force (14gf) and mechanical life (20,000,000 cycles). Termination style matches the original (screw terminal). Operating force is lower at 71gf compared to 113gf on the BZ-7RW855T-S. Operating temperature range is restricted to 0°C to 55°C, narrower than the original -55°C to 85°C specification. ROHS3 compliance exceeds RoHS requirements. This substitute is suitable for applications within the specified temperature range where reduced operating force is acceptable.

GPTBLS11 (ZF Electronics): This substitute provides higher current capacity at 20A AC versus 15A AC on the original part, with matching 125V AC voltage rating and screw terminal termination. Operating force is 79gf, lower than the original 113gf. Operating temperature range is 0°C to 55°C. Mechanical life matches at 20,000,000 cycles. ROHS3 compliance is provided. This substitute is suitable for applications requiring higher current capacity within the specified temperature range.

All three substitutes maintain SPDT circuit configuration, on-momentary function, straight lever actuator, and chassis mount design. Selection depends on specific application requirements regarding termination method, operating force, current capacity, and temperature range.

Frequently Asked Questions (FAQ)

Q: Can V3L-1084 directly replace BZ-7RW855T-S in existing installations?

A: V3L-1084 provides electrical and mechanical equivalence but uses solder lug termination instead of screw terminal. Direct mechanical replacement requires termination adaptation. Electrical performance is equivalent for 15A AC, 500mA DC at 125V AC/DC operation.

Q: What is the primary difference between GPTCLS11 and GPTBLS11?

A: GPTCLS11 is rated for 15A AC, matching the original BZ-7RW855T-S current rating. GPTBLS11 is rated for 20A AC, providing higher current capacity. Both use screw terminal termination and share identical mechanical life and overtravel specifications. Operating force differs: GPTCLS11 at 71gf and GPTBLS11 at 79gf.

Q: Are the ZF Electronics substitutes suitable for low-temperature applications?

A: GPTCLS11 and GPTBLS11 are rated for 0°C to 55°C operating temperature. The original BZ-7RW855T-S operates from -55°C to 85°C. ZF substitutes are not suitable for applications requiring operation below 0°C or above 55°C.

Q: What does the difference in operating position mean for mechanical compatibility?

A: Operating position specifies the actuator travel distance at which the switch transitions. BZ-7RW855T-S operates at 0.750" (19.1mm), while V3L-1084 operates at 0.565" (14.35mm), and both ZF parts operate at 0.715" (18.2mm). These differences affect mechanical clearance and may require bracket or mounting adjustments.

Q: Are all substitutes RoHS compliant?

A: Yes. BZ-7RW855T-S and V3L-1084 are RoHS Compliant. GPTCLS11 and GPTBLS11 are ROHS3 Compliant, which exceeds RoHS requirements and is suitable for applications requiring enhanced environmental compliance.

Q: What is the significance of differential travel differences?

A: Differential travel is the distance between operating and release points. BZ-7RW855T-S has 0.125" (3.2mm) differential travel, while ZF substitutes have 0.050" (1.3mm). Smaller differential travel provides faster response but may require more precise actuator positioning.

Q: Can GPTBLS11 be used in applications designed for 15A current?

A: Yes. GPTBLS11 is rated for 20A AC, which exceeds the 15A requirement. It is suitable for 15A applications and provides additional current capacity margin. However, operating force (79gf) and temperature range (0°C to 55°C) must be verified against application requirements.