BM-2RW8424-A2 Equivalent & Substitute Parts

Part Overview

The BM-2RW8424-A2 is a snap action SPDT (Single Pole Double Throw) switch manufactured by Honeywell Sensing and Productivity Solutions. This chassis-mounted switch is rated for 22A AC at 125V and features a straight lever actuator with screw terminal connections. The product is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and component procurement.

Substiute Parts

BM-2RW8424-A2

Honeywell Sensing and Productivity SolutionsIn Stock: 738BM-2RW8424-A2 Datasheet

Current PartRFQ

GPTBLS11

ZF ElectronicsIn Stock: 979GPTBLS11 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BM-2RW8424-A2 is determined by the following core parameters:

Circuit Configuration: SPDT topology is required for functional equivalence, ensuring identical switching logic and contact arrangement.

Switch Function: On-Mom (On-Momentary) operation must be maintained to preserve system behavior.

Mounting Type: Chassis mount configuration is mandatory for mechanical compatibility with existing installations.

Termination Style: Screw terminal connections are required for direct wiring compatibility.

Voltage Rating: AC voltage rating of 125V is the primary electrical constraint.

Current Rating: The substitute must support the application's current requirements. The main part is rated for 22A AC; substitutes with lower AC current ratings (such as 20A) are acceptable only when the application current demand does not exceed the substitute's rating.

Actuator Type: Straight lever actuators ensure consistent mechanical interface and operational feel.

Mechanical Life: 20,000,000 cycle rating establishes the durability baseline.

Compliance: RoHS compliance status and MSL rating ensure regulatory and environmental compatibility.

Parameter Comparison

Engineering Selection Recommendations

GPTBLS11 (ZF Electronics) is the identified substitute for the BM-2RW8424-A2. This part maintains functional equivalence across all critical switching parameters: SPDT circuit, On-Mom operation, 125V AC rating, straight lever actuation, chassis mounting, and screw terminal termination.

Current Rating Consideration: The GPTBLS11 is rated for 20A AC, compared to the main part's 22A AC rating. This substitute is suitable for applications where the steady-state current demand does not exceed 20A AC. Applications requiring the full 22A capacity must source alternative parts with matching current ratings.

Mechanical Characteristics: The GPTBLS11 exhibits higher operating force (79gf versus 28gf) and higher release force (14gf versus 3.500gf). These differences result in a switch requiring greater manual actuation effort. The pretravel distance is also increased (0.394" versus 0.328"), affecting the tactile response profile. These mechanical differences are acceptable for applications where operator force capability is not a constraint.

Temperature Range: The main part operates across -55°C to 121°C, while the GPTBLS11 operates across 0°C to 55°C. Applications requiring operation below 0°C or above 55°C cannot use this substitute.

Compliance and Availability: The GPTBLS11 is RoHS3 compliant and currently in active production with 967 units in stock, providing supply continuity for the obsolete BM-2RW8424-A2. Both parts carry MSL 1 (Unlimited) moisture sensitivity ratings.

Frequently Asked Questions (FAQ)

Q: Can the GPTBLS11 directly replace the BM-2RW8424-A2 in all applications?

A: The GPTBLS11 is functionally equivalent for SPDT switching logic and electrical ratings. However, substitution is conditional on three factors: (1) application current does not exceed 20A AC, (2) operating temperature remains within 0°C to 55°C, and (3) the higher actuation forces (79gf operating, 14gf release) are compatible with the mechanical interface and operator capability.

Q: What is the primary difference in current rating between these parts?

A: The BM-2RW8424-A2 is rated for 22A AC, while the GPTBLS11 is rated for 20A AC. The substitute can handle applications up to 20A AC. Applications requiring higher current capacity must identify alternative parts with 22A or greater AC ratings.

Q: Are there temperature limitations with the GPTBLS11?

A: Yes. The GPTBLS11 operates within 0°C to 55°C, whereas the main part operates within -55°C to 121°C. Applications requiring operation below 0°C or above 55°C cannot use the GPTBLS11 as a substitute.

Q: How do the mechanical characteristics differ?

A: The GPTBLS11 requires significantly higher actuation force (79gf versus 28gf) and release force (14gf versus 3.500gf). The pretravel distance is also greater (0.394" versus 0.328"). These differences affect the tactile response and operator effort required to actuate the switch. Verify that the mechanical interface and operator capability accommodate these changes.

Q: Are both parts RoHS compliant?

A: Yes. The BM-2RW8424-A2 is RoHS Compliant, and the GPTBLS11 is ROHS3 Compliant. Both meet environmental and regulatory requirements for RoHS compliance.

Q: What is the packaging difference?

A: The BM-2RW8424-A2 is supplied with unspecified packaging, while the GPTBLS11 is supplied in bulk packaging. Verify packaging requirements for your procurement and assembly processes.

Q: Is the GPTBLS11 currently available?

A: Yes. The GPTBLS11 is classified as Active product status with 967 units in stock, providing immediate availability. The BM-2RW8424-A2 is obsolete; 654 units remain in stock but no future production is planned.