Overview
The Honeywell BZ-2RQ784 is a single-pole double-throw (SPDT) snap action microswitch designed for simple and precision ON/OFF applications. The BZ-2RQ784 is a single-pole double-throw (SPDT) premium large Standard Basic Microswitch with an over-travel plunger actuator and screw terminations. The MICRO SWITCHâ„¢ BZ series standard basic switch is used for simple or precision ON/OFF application needs and also end of limit, presence/absence and manual operator interface functions. This lot includes two units in used condition, ready for field deployment or spare inventory.
Key Features
- SPDT Configuration: Single-pole double-throw contact arrangement for standard switching logic
- Overtravel Plunger Actuator: Over-travel plunger actuator provides positive engagement and repeatability
- Screw Terminals: Reliable wired connections suitable for industrial control enclosures
- High Current Rating: 15 A, 250 VDC electrical specification for standard industrial loads
- Snap Action Contact: Fast, reliable switching action characteristic of MICRO SWITCH brand quality
- Panel Mount Capable: Standard footprint compatible with limit switch stations and control assemblies
Technical Specifications
- Contact Configuration: SPDT (Single-Pole Double-Throw)
- Contact Rating (DC): 15 A @ 250 VDC
- Termination Type: Screw terminal
- Actuator Type: Overtravel plunger
- Actuation Force: 2.5 N
- Series: MICRO SWITCH BZ
- Housing Material: Phenolic
- Mounting Type: Panel mount with 3.53 mm [0.139 in] diameter mounting holes
- Operating Temperature Range: -20°C to +55°C
- Dimensions (L × W × H): 50.8 mm × 17.8 mm × 25.4 mm
- Certifications: UL 1054 (Special Use Switches)
Typical Applications
The BZ-2RQ784 is commonly deployed in:
- Limit switch stations for machinery position detection
- Safety interlocks and presence sensing applications
- Industrial control panels and enclosures
- Manual operator interface push-button actuated circuits
- End-of-travel detection in linear motion systems
- HVAC, industrial automation, aerospace, and defense equipment
Compatibility & Replacements
Compatible With
- Standard 24VDC/120VAC industrial control circuits
- PLC input modules and discrete I/O boards
- Relay logic and hardwired control systems
- Limit switch stations and pushbutton enclosures
- Honeywell MICRO SWITCH limit switch assemblies
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The BZ-2RQ784 may replace earlier or similar-footprint Honeywell MICRO SWITCH basic snap action switches; consult engineering drawings and contact specifications before installation.
Works With
- Electromechanical relay control systems
- PLC discrete input modules (24VDC, 120VAC rated inputs)
- Hardwired ON/OFF logic and safety circuits
- Honeywell limit switch assemblies and actuator kits
- Standard industrial electrical wiring standards (UL, CSA)



