BZ-2RN-A2 Equivalent & Substitute Parts Reference

Part Overview

The BZ-2RN-A2 is a snap action switch manufactured by Honeywell Sensing and Productivity Solutions, classified as a Single Pole Double Throw (SPDT) device with momentary on-function capability. This chassis mount switch is rated for 15A AC at 125V and 500mA DC at 125V, featuring a round pin plunger actuator with screw terminal connections. The product maintains active status with full RoHS compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical performance, circuit configuration, and mechanical compatibility align with application requirements while accommodating different mounting or actuator specifications.

Substiute Parts

BZ-2RN-A2

Honeywell Sensing and Productivity SolutionsIn Stock: 755BZ-2RN-A2 Datasheet

Current PartRFQ

GPTCNH11

ZF ElectronicsIn Stock: 1119GPTCNH11 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BZ-2RN-A2 are identified based on strict alignment of the following critical parameters:

Mandatory Matching Criteria:

• Circuit configuration must be SPDT
• Switch function must be On-Mom (momentary operation)
• Current rating must support minimum 15A AC
• Voltage rating must support minimum 125V AC
• Termination style must be screw terminal
• Mechanical life must meet or exceed 20,000,000 cycles

Allowable Variations:

• Mounting type may differ (chassis mount vs. panel mount) provided the application permits physical reconfiguration
• Actuator type may vary (round pin plunger vs. overtravel plunger) if the actuation force and travel characteristics remain compatible with the application interface
• Operating temperature range may be narrower if the application operates within the substitute part's specified limits
• Manufacturer and series designation may differ while maintaining electrical and mechanical equivalence

The GPTCNH11 from ZF Electronics qualifies as a substitute based on matching SPDT circuit, momentary function, 15A AC rating, 125V AC voltage, screw terminal connection, and 20,000,000 cycle mechanical life. Differences in mounting type (panel mount vs. chassis mount) and operating temperature range (-55°C to 85°C vs. 0°C to 55°C) represent allowable variations dependent on specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (BZ-2RN-A2): Select the BZ-2RN-A2 when the application requires chassis mount configuration with extended operating temperature range (-55°C to 85°C). This part is appropriate for industrial environments with wide temperature extremes and fixed panel installations where the chassis mount interface is already established.

Substitute Selection (GPTCNH11): The GPTCNH11 qualifies as a functional substitute when the application permits panel mount installation and operates within the 0°C to 55°C temperature range. This part is suitable for commercial and light industrial applications with standard environmental conditions. The different actuator type (overtravel plunger vs. round pin plunger) and reduced operating position travel (0.825" vs. 1.720") require verification that the mechanical interface and actuation method are compatible with the application's physical design.

Compliance Considerations: Both parts maintain active product status with full regulatory compliance. The BZ-2RN-A2 carries RoHS Compliant certification, while the GPTCNH11 carries ROHS3 Compliant certification. ROHS3 represents the current regulatory standard and is acceptable for new designs. Both parts carry unlimited moisture sensitivity (MSL 1), indicating no special handling requirements during storage or assembly.

Inventory and Availability: The BZ-2RN-A2 maintains 721 pieces in stock. The GPTCNH11 maintains 1,099 pieces in stock. Selection should account for supply chain requirements and lead time considerations.

Frequently Asked Questions (FAQ)

Q: Can the GPTCNH11 directly replace the BZ-2RN-A2 in an existing assembly?

A: Direct replacement depends on the mechanical mounting interface. The BZ-2RN-A2 is chassis mount while the GPTCNH11 is panel mount. If the existing assembly uses a chassis mount cavity, physical modification is required to accommodate panel mount installation. Electrical functionality is equivalent for SPDT momentary operation at 15A/125V AC.

Q: What is the significance of the different operating position values (1.720" vs. 0.825")?

A: Operating position defines the plunger travel distance required to actuate the switch. The BZ-2RN-A2 requires 1.720 inches of travel, while the GPTCNH11 requires 0.825 inches. This difference reflects different actuator designs (round pin plunger vs. overtravel plunger). The application must accommodate the specific travel distance of the selected part. Shorter travel may reduce actuation force requirements but requires verification with the mechanical interface.

Q: Are there temperature limitations when substituting the GPTCNH11 for the BZ-2RN-A2?

A: Yes. The BZ-2RN-A2 operates from -55°C to 85°C, while the GPTCNH11 operates from 0°C to 55°C. If the application requires operation below 0°C or above 55°C, the GPTCNH11 is not suitable. The BZ-2RN-A2 must be retained for extended temperature range applications.

Q: Do both parts use identical termination methods?

A: Yes. Both the BZ-2RN-A2 and GPTCNH11 use screw terminal connections. Electrical wiring and connection procedures are compatible between the two parts.

Q: What is the difference between RoHS Compliant and ROHS3 Compliant?

A: Both certifications indicate compliance with Restriction of Hazardous Substances regulations. ROHS3 represents the current version of the standard and includes additional restricted substances compared to earlier versions. ROHS3 Compliant parts are acceptable for new designs and are considered the current regulatory requirement.

Q: Are the mechanical life ratings equivalent?

A: Yes. Both parts are rated for 20,000,000 mechanical cycles. This specification indicates equivalent durability and expected service life under normal operating conditions.

Q: What does MSL 1 (Unlimited) mean for component handling?

A: MSL 1 (Moisture Sensitivity Level 1) with unlimited rating indicates that the component has no moisture sensitivity restrictions. Standard storage conditions without special desiccant packaging or humidity control are acceptable. Both parts can be stored and handled using standard industrial practices.

Q: Can the GPTCNH11 be used in applications requiring the full -55°C to 85°C temperature range?

A: No. The GPTCNH11 is rated only for 0°C to 55°C operation. Using it outside this range may result in performance degradation or component failure. The BZ-2RN-A2 must be used for applications requiring extended temperature operation.

Q: Are there any differences in electrical performance between the two parts?

A: No. Both parts provide identical electrical performance for SPDT momentary operation at 15A AC and 125V AC. Current and voltage ratings are equivalent. Differences are limited to mechanical characteristics (mounting type, actuator design, operating position) and environmental operating range.