BAF1-2RN2-RH Equivalent & Substitute Parts

Part Overview

The BAF1-2RN2-RH is a snap action SPDT switch manufactured by Honeywell Sensing and Productivity Solutions. This chassis mount switch features a lever roller actuator with screw terminal connections, rated for 20A AC at 125V and 500mA DC at 125V. The switch operates in an On-Momentary function and is designated as Not For New Designs. Due to this product status and potential supply constraints, equivalent substitute parts from active product lines are available to meet identical or comparable application requirements.

Substiute Parts

BAF1-2RN2-RH

Honeywell Sensing and Productivity SolutionsIn Stock: 814BAF1-2RN2-RH Datasheet

Current PartRFQ

ZE-NA2-2S

Omron Automation and SafetyIn Stock: 1124ZE-NA2-2S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BAF1-2RN2-RH is determined by the following critical parameters:

Primary Compatibility Criteria:

• Circuit configuration must be SPDT
• Switch function must be On-Momentary
• Mounting type must be Chassis Mount
• Termination style must be Screw Terminal
• Actuator type must include Lever and Roller options
• Voltage ratings must support 125V AC and 125V DC operation

Secondary Compatibility Criteria:

• Current rating must meet or exceed application requirements
• Operating temperature range must encompass application environment
• RoHS compliance status must satisfy regulatory requirements

The ZE-NA2-2S from Omron Automation and Safety meets all primary compatibility criteria. While the AC current rating is 15A (lower than the 20A of the BAF1-2RN2-RH), this substitute is suitable for applications requiring 15A or less at 125V AC. Both parts share identical DC current ratings (500mA), voltage ratings, circuit configuration, mounting type, and termination style.

Parameter Comparison

Engineering Selection Recommendations

BAF1-2RN2-RH Selection Criteria:

• Applications requiring 20A AC at 125V
• Operating environments within -32°C to 71°C range
• Existing designs with established supply chains
• Legacy system maintenance where original part specifications are mandatory

ZE-NA2-2S Selection Criteria:

• New designs and redesigns
• Applications requiring 15A AC or less at 125V
• Operating environments within -10°C to 80°C range
• Applications benefiting from IP65 ingress protection
• Designs requiring active product line support and long-term availability
• Compliance with current RoHS3 standards

The ZE-NA2-2S is the preferred substitute for new designs due to its active product status, enhanced environmental protection rating, and compliance with current regulatory standards. The primary limitation is the reduced AC current rating of 15A; applications exceeding this threshold require the BAF1-2RN2-RH or alternative parts with higher current ratings.

Frequently Asked Questions (FAQ)

Q: Can the ZE-NA2-2S directly replace the BAF1-2RN2-RH in all applications?

A: Direct replacement is possible only in applications where the AC current requirement does not exceed 15A at 125V. The ZE-NA2-2S is rated for 15A AC, while the BAF1-2RN2-RH is rated for 20A AC. All other electrical and mechanical parameters are compatible.

Q: What is the significance of the "Not For New Designs" status on the BAF1-2RN2-RH?

A: This designation indicates that Honeywell is not recommending this part for new product development. New designs should utilize active product lines such as the ZE-NA2-2S from Omron to ensure long-term availability, support, and compliance with current standards.

Q: Are there temperature range differences that affect substitution?

A: Yes. The BAF1-2RN2-RH operates from -32°C to 71°C, while the ZE-NA2-2S operates from -10°C to 80°C. Applications requiring operation below -10°C must use the BAF1-2RN2-RH or identify alternative parts. Applications within the -10°C to 71°C range are compatible with both parts.

Q: What does the IP65 rating on the ZE-NA2-2S provide?

A: IP65 indicates the switch is dust tight and water resistant. This environmental protection is not specified for the BAF1-2RN2-RH. Applications in harsh or wet environments benefit from the ZE-NA2-2S's enhanced ingress protection.

Q: Are both parts RoHS compliant?

A: Yes. The BAF1-2RN2-RH is RoHS Compliant, and the ZE-NA2-2S is ROHS3 Compliant. Both meet regulatory requirements for hazardous substance restrictions. The ZE-NA2-2S meets the current ROHS3 standard.

Q: What are the mechanical differences between these switches?

A: Both switches feature lever roller actuators with identical circuit configurations and mounting types. Minor differences exist in operating force (907gf vs. 640gf), pretravel (5.6mm vs. 5.0mm), and differential travel (0.5mm vs. 0.4mm). These differences do not affect functional compatibility for standard applications.

Q: Can I use the ZE-NA2-2S in a 20A application?

A: No. The ZE-NA2-2S is rated for 15A AC maximum. Using it in a 20A application exceeds its electrical rating and may result in switch failure or safety hazards. The BAF1-2RN2-RH or an alternative part rated for 20A must be used.