BZH1-2RN2 Equivalent & Substitute Parts

Part Overview

The BZH1-2RN2 is a snap action switch manufactured by Honeywell Sensing and Productivity Solutions. It features a single-pole double-throw (SPDT) circuit configuration with a momentary on-function, rated for 15A AC at 125V and 500mA DC at 125V. The switch employs a lever roller actuator and is designed for chassis mount installation with screw terminal connections. This component is actively produced and RoHS compliant.

Substitute parts are identified when component availability is limited, supply chain disruptions occur, or when design flexibility permits equivalent functionality within the same electrical and mechanical parameter ranges.

Substiute Parts

BZH1-2RN2

Honeywell Sensing and Productivity SolutionsIn Stock: 1024BZH1-2RN2 Datasheet

Current PartRFQ

ZV-NA2-2S

Omron Automation and SafetyIn Stock: 725ZV-NA2-2S Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BZH1-2RN2 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Circuit type: SPDT
• Switch function: On-Momentary
• Current rating: 15A AC minimum, 500mA DC minimum
• Voltage rating: 125V AC and 125V DC minimum
• Actuator type: Lever with roller configuration
• Mounting: Chassis mount
• Termination: Screw terminal
• RoHS compliance status

Allowable Variation Parameters:

• Operating force and release force values (within mechanical design tolerance)
• Pretravel, differential travel, and overtravel distances (within mechanical design tolerance)
• Operating temperature range (substitute may exceed the original range)
• Ingress protection rating (substitute may exceed the original specification)
• Electrical and mechanical life cycles (substitute may exceed the original specification)
• Packaging format

The ZV-NA2-2S from Omron Automation and Safety meets all mandatory matching parameters and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

BZH1-2RN2 Selection Criteria:

• Primary choice when Honeywell component specifications are contractually required
• Preferred when operating temperature range of -32°C to 71°C is the design constraint
• Suitable for applications where ingress protection is not a requirement
• Active product status ensures ongoing availability and support

ZV-NA2-2S Selection Criteria:

• Direct substitute when BZH1-2RN2 availability is constrained
• Preferred when operating temperature range of -10°C to 80°C meets or exceeds application requirements
• Suitable for applications requiring IP65 ingress protection (dust tight, water resistant)
• Documented electrical life (500,000 cycles) and mechanical life (10,000,000 cycles) provide additional performance assurance
• Active product status ensures ongoing availability and support

Both components are RoHS compliant and carry MSL 1 moisture sensitivity classification, indicating no special storage or handling requirements.

Frequently Asked Questions (FAQ)

Q: Can the ZV-NA2-2S replace the BZH1-2RN2 in all applications?

A: The ZV-NA2-2S qualifies as a direct substitute based on electrical ratings (15A AC, 500mA DC, 125V AC/DC), circuit configuration (SPDT), switch function (On-Momentary), actuator type (lever roller), mounting type (chassis mount), and termination style (screw terminal). Mechanical parameter variations (operating force, pretravel, differential travel, overtravel) fall within acceptable tolerance ranges. The substitute offers extended operating temperature range (-10°C to 80°C versus -32°C to 71°C) and IP65 ingress protection. Application-specific validation is required if the original design depends on the exact mechanical characteristics of the BZH1-2RN2.

Q: What are the mechanical differences between these two switches?

A: The ZV-NA2-2S exhibits higher operating force (640gf versus 283–567gf range) and higher release force (230gf versus 170gf). Pretravel is slightly longer (0.197" versus 0.188"), differential travel is greater (0.016" versus 0.006"), and overtravel is marginally longer (0.235" versus 0.219"). These differences reflect different mechanical designs but do not affect electrical functionality or circuit compatibility.

Q: Are there packaging differences between the BZH1-2RN2 and ZV-NA2-2S?

A: The BZH1-2RN2 is supplied in standard packaging format. The ZV-NA2-2S is supplied in bulk packaging. Both components are MSL 1 rated, requiring no special moisture control during storage or handling.

Q: Which switch offers better environmental protection?

A: The ZV-NA2-2S includes IP65 ingress protection (dust tight, water resistant), whereas the BZH1-2RN2 does not specify an ingress protection rating. For applications requiring environmental sealing, the ZV-NA2-2S provides documented protection.

Q: What is the temperature operating range difference?

A: The BZH1-2RN2 operates from -32°C to 71°C. The ZV-NA2-2S operates from -10°C to 80°C. The substitute provides a higher upper temperature limit (80°C versus 71°C) but a higher lower temperature limit (-10°C versus -32°C). Applications requiring operation below -10°C must use the BZH1-2RN2.

Q: Are both switches RoHS compliant?

A: Yes. Both the BZH1-2RN2 and ZV-NA2-2S are RoHS compliant and carry MSL 1 moisture sensitivity classification.