BZ-2RW82120-A21 Equivalent & Substitute Parts

Part Overview

The BZ-2RW82120-A21 is a snap action SPDT switch manufactured by Honeywell Sensing and Productivity Solutions. This chassis mount switch is rated for 15A at 125V AC and features a lever roller actuator with screw terminal connections. The product is classified as obsolete, making equivalent substitute parts necessary for ongoing maintenance, repair, and new design applications where this switch type is required.

Substiute Parts

BZ-2RW82120-A21

Honeywell Sensing and Productivity SolutionsIn Stock: 727BZ-2RW82120-A21 Datasheet

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GPTCRS01

ZF ElectronicsIn Stock: 1175GPTCRS01 Datasheet

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GPTCRS11

ZF ElectronicsIn Stock: 894GPTCRS11 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZ-2RW82120-A21 is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Requirements:

• Circuit configuration must be SPDT
• Switch function must be On-Momentary
• Current rating must support minimum 15A at 125V AC
• Voltage rating must be 125V AC minimum

Mechanical Compatibility Requirements:

• Actuator type must be Lever with Roller
• Mounting type must be Chassis Mount
• Termination style must be Screw Terminal
• Mechanical life must be 20,000,000 cycles minimum

Environmental & Compliance Requirements:

• Operating temperature range must encompass the application environment
• RoHS compliance status must be verified
• MSL rating must be 1 (Unlimited)

The substitute parts GPTCRS01 and GPTCRS11, both manufactured by ZF Electronics, meet these core electrical and mechanical requirements. Both parts are active products with current availability, addressing the obsolescence status of the original BZ-2RW82120-A21.

Parameter Comparison

Engineering Selection Recommendations

For Obsolete Product Replacement:

The BZ-2RW82120-A21 is classified as obsolete. Both GPTCRS01 and GPTCRS11 are active products from ZF Electronics with current manufacturing status and documented inventory availability (1106 and 821 units respectively).

Compliance Considerations:

Both substitute parts meet or exceed the compliance requirements of the original part. The BZ-2RW82120-A21 carries RoHS Compliant status, while GPTCRS01 and GPTCRS11 carry ROHS3 Compliant status, representing enhanced environmental compliance standards. Both substitute parts maintain EAR99 export classification and identical HTSUS commodity codes.

Operational Parameter Alignment:

The substitute parts maintain electrical equivalence across all critical ratings: 15A at 125V AC, SPDT circuit configuration, and On-Momentary switch function. Mechanical parameters are substantially equivalent, with minor dimensional variations in operating position (1.188" vs. 1.156") and overtravel (0.156" vs. 0.158") that fall within normal manufacturing tolerances for this switch category.

Temperature Range Limitation:

The original BZ-2RW82120-A21 operates across -55°C to 85°C, while GPTCRS01 and GPTCRS11 operate across 0°C to 55°C. Applications requiring operation below 0°C or above 55°C cannot use these substitute parts.

Frequently Asked Questions (FAQ)

Q: Can GPTCRS01 and GPTCRS11 be used interchangeably as replacements for BZ-2RW82120-A21?

A: Both GPTCRS01 and GPTCRS11 meet the core electrical and mechanical requirements for substitution. They share identical electrical ratings (15A, 125V AC, SPDT), actuator type (Lever Roller), mounting configuration (Chassis Mount), and termination style (Screw Terminal). The parts are functionally equivalent for applications operating within the 0°C to 55°C temperature range.

Q: What are the key differences between the original part and the substitutes?

A: The primary differences are: (1) Product status—the original is obsolete while substitutes are active; (2) Operating temperature range—original supports -55°C to 85°C while substitutes support 0°C to 55°C; (3) Minor mechanical dimensions—operating position differs by 0.032" and overtravel by 0.002"; (4) Compliance level—substitutes carry ROHS3 status versus RoHS Compliant for the original.

Q: Are GPTCRS01 and GPTCRS11 identical to each other?

A: Yes. Both parts share identical electrical specifications, mechanical parameters, operating characteristics, compliance certifications, and temperature ratings. They are functionally equivalent.

Q: What is the impact of the operating temperature range difference?

A: The BZ-2RW82120-A21 supports operation from -55°C to 85°C. The substitute parts GPTCRS01 and GPTCRS11 support 0°C to 55°C. Applications requiring operation below 0°C or above 55°C must use the original part or identify alternative substitutes with extended temperature ratings.

Q: Are the packaging formats compatible?

A: The original BZ-2RW82120-A21 is specified with "-" packaging notation. Both GPTCRS01 and GPTCRS11 are supplied in Bulk packaging. Verify that bulk packaging meets your procurement and handling requirements.

Q: Do the substitute parts maintain the same screw terminal configuration?

A: Yes. Both GPTCRS01 and GPTCRS11 use Screw Terminal termination style, matching the original BZ-2RW82120-A21 configuration.

Q: What is the significance of the ROHS3 compliance on the substitute parts?

A: ROHS3 Compliant status indicates enhanced environmental compliance beyond the RoHS Compliant status of the original part. This represents current regulatory alignment and is suitable for applications with modern environmental requirements.