BA-2RB-A4 Snap Action Switch SPDT Equivalent & Substitute Parts

Part Overview

The BA-2RB-A4 is a snap action switch manufactured by Honeywell Sensing and Productivity Solutions, classified as a Single Pole Double Throw (SPDT) switch with chassis mount configuration. This component operates at 20A AC and 125V AC/DC ratings with an overtravel plunger actuator. The part maintains Active product status with RoHS compliance and unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and circuit functionality can be maintained within the allowed parameter ranges for SPDT snap action switches. Substitution becomes necessary due to inventory availability, supply chain considerations, or specific application requirements while maintaining circuit integrity.

Substiute Parts

BA-2RB-A4

Honeywell Sensing and Productivity SolutionsIn Stock: 1023BA-2RB-A4 Datasheet

Current PartRFQ

A-20GV22-B

Omron Automation and SafetyIn Stock: 872A-20GV22-B Datasheet

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X-10GW22-B

Omron Automation and SafetyIn Stock: 1070X-10GW22-B Datasheet

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Z-15GD-B

Omron Automation and SafetyIn Stock: 2042Z-15GD-B Datasheet

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Z-15GK55-B

Omron Automation and SafetyIn Stock: 1056Z-15GK55-B Datasheet

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Z-15GM2255-B

Omron Automation and SafetyIn Stock: 1077Z-15GM2255-B Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the BA-2RB-A4 is based on the following critical parameters that must align with the main part specifications:

Primary Substitution Criteria:

• Circuit configuration must remain SPDT
• Switch function must remain On-Mom
• Mounting type must remain Chassis Mount
• Termination style must remain Screw Terminal
• AC voltage rating must support minimum 125V
• AC current rating must support minimum 20A

Secondary Compatibility Factors:

• Mechanical life rating of 20,000,000 cycles or greater
• Operating temperature range overlap with -55°C to 85°C
• RoHS compliance status (RoHS Compliant or ROHS3 Compliant acceptable)
• MSL rating of 1 (Unlimited)

The substitute parts identified (A-20GV22-B, Z-15GM2255-B, Z-15GD-B, Z-15GK55-B, X-10GW22-B) are all SPDT snap action switches with chassis mount and screw terminal configurations. However, each substitute exhibits variations in current ratings, voltage ratings, actuator types, and operating temperature ranges that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

A-20GV22-B (Omron Automation and Safety)

The A-20GV22-B matches the BA-2RB-A4 in AC current (20A) and AC voltage (125V) ratings, maintaining equivalent AC circuit performance. However, this substitute exhibits reduced DC voltage rating (30V versus 125V) and lower mechanical life (1,000,000 cycles versus 20,000,000 cycles). The operating temperature range is narrower (-25°C to 80°C versus -55°C to 85°C). Selection of this part is appropriate for AC-dominant applications within the reduced temperature range. ROHS3 compliance is acceptable for RoHS-compliant applications.

Z-15GD-B (Omron Automation and Safety)

The Z-15GD-B provides 15A AC current rating and 125V AC voltage rating, representing a 5A reduction from the main part. Mechanical life matches the BA-2RB-A4 at 20,000,000 cycles. Operating temperature range is reduced to -25°C to 80°C. This substitute is suitable for applications requiring 15A AC or less. The round pin plunger actuator differs from the overtravel plunger design. ROHS3 compliance and REACH Unaffected status are noted.

Z-15GK55-B (Omron Automation and Safety)

The Z-15GK55-B provides 15A AC current and 125V AC voltage with 20,000,000 mechanical life cycles matching the main part. Operating temperature range is -15°C to 80°C. This variant includes IP62 ingress protection and a round pin plunger actuator. Selection is appropriate for applications requiring 15A AC or less with environmental sealing. ROHS3 compliance and REACH Affected status apply.

Z-15GM2255-B (Omron Automation and Safety)

The Z-15GM2255-B provides 15A AC current and 125V AC voltage with 10,000,000 mechanical life cycles. Operating temperature range is -15°C to 80°C. This variant includes IP62 ingress protection and a lever roller actuator. Mechanical life is reduced compared to the main part. Selection is appropriate for 15A AC applications requiring environmental sealing. ROHS3 compliance and REACH Affected status apply.

X-10GW22-B (Omron Automation and Safety)

The X-10GW22-B provides 10A DC current rating at 30V DC with no AC rating specified. Mechanical life is 1,000,000 cycles. This substitute is limited to DC applications and does not support the AC performance of the main part. Selection is not recommended for AC circuit replacement of the BA-2RB-A4.

Frequently Asked Questions (FAQ)

Q: Can the A-20GV22-B replace the BA-2RB-A4 in all applications?

A: The A-20GV22-B matches AC current and voltage ratings but exhibits reduced DC voltage capability (30V versus 125V) and lower mechanical life (1,000,000 versus 20,000,000 cycles). Replacement is limited to AC-dominant applications operating within -25°C to 80°C. DC applications or those requiring extended mechanical life must use alternative substitutes.

Q: What is the primary difference between Z-15GD-B and Z-15GK55-B?

A: Both parts provide identical electrical ratings (15A AC, 125V AC). The Z-15GK55-B includes IP62 ingress protection and operates at higher operating force (540gf versus 250-350gf). Selection depends on environmental sealing requirements and actuator force specifications for the application.

Q: Why does X-10GW22-B have no AC rating?

A: The X-10GW22-B is specified for DC operation only at 10A DC, 30V DC. This part does not support AC circuit operation and cannot replace the BA-2RB-A4 in AC applications. This substitute is applicable only for DC-specific circuit designs.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts carry ROHS3 compliance status, which is acceptable for RoHS-compliant applications. The main part BA-2RB-A4 carries RoHS Compliant status. Both compliance levels satisfy RoHS directive requirements.

Q: What packaging options are available for substitutes?

A: Substitute parts are available in Bulk packaging (A-20GV22-B, Z-15GK55-B, Z-15GM2255-B) and Tray packaging (Z-15GD-B, X-10GW22-B). Packaging selection does not affect electrical or mechanical performance and is determined by procurement and inventory management requirements.

Q: Which substitute maintains the 20,000,000 mechanical life cycle rating?

A: Z-15GD-B and Z-15GK55-B both maintain 20,000,000 mechanical life cycles matching the BA-2RB-A4. Z-15GM2255-B provides 10,000,000 cycles, and A-20GV22-B and X-10GW22-B provide 1,000,000 cycles. Applications requiring extended mechanical life should prioritize Z-15GD-B or Z-15GK55-B.

Q: Can substitutes operate at the full -55°C to 85°C temperature range of the BA-2RB-A4?

A: No substitute part maintains the full temperature range of the main part. All substitutes have reduced lower temperature limits ranging from -15°C to -25°C. Applications requiring operation below -15°C must use the BA-2RB-A4 or verify alternative solutions.