Overview
The Micro Switch BAF1-2RQ3-LH is a high-capacity enclosed limit switch from Honeywell’s BAF1 series, engineered for reliable position detection in commercial and industrial control systems. Rated for up to 20 amperes, this switch combines durable metal construction with sealed actuator protection to withstand factory floor environments.
Key Features
- 20A capacity for heavy-duty load switching
- SPDT snap-action configuration (1NC–1NO) ensures fast, reliable contact break
- Metal/aluminum die-cast housing with three-hole mounting base for secure installation
- Sealed actuator design with elastomer boot protects internal mechanism from dust, moisture, and contaminants
- Easy serviceability: removable cover plate allows wiring and switch replacement without demounting
- NEMA 1, 3, 4, 13 sealing ratings support indoor and light outdoor use
Technical Specifications
- Current rating: Up to 20 A (AC/DC switchable depending on voltage)
- Contact configuration: SPDT (1NC–1NO snap-action)
- Mounting: Three-hole base with 101 mm × 41 mm centers
- Housing: Cast aluminum die-cast enclosure
- Actuator position: Left-hand (LH) when viewing nameplate
- Operating temperature range: −32 °C to +71 °C (−25 °F to +160 °F)
- Termination style: Conduit or screw terminals (verify with your unit)
- Sealing: NEMA 1, 3, 4, and 13
- Certifications: UL recognized (File #E12252), CSA certified (File #LR41372)
- Dimensions: Approximately 101.6 mm L × 80.5 mm H × 33 mm D
Typical Applications
The BAF1-2RQ3-LH is widely used in:
- Conveyor and material handling systems for end-of-travel detection
- Press machinery and automated assembly lines
- Machine tool position sensing (spindle, table, chuck position)
- Industrial automation limit switching where snap-action response is required
- General industrial control and safety interlock circuits
Compatibility & Replacements
Compatible With
- Allen-Bradley PLC input modules and safety systems
- Siemens S7 and legacy STEP 5 automation controllers
- Mitsubishi FX and Q-series programmable controllers
- Omron and Schneider Electric control systems
- Standard 24 VDC and AC control circuits up to 480 VAC
- Conventional hard-wired relay and contactor control schemes
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The BAF1-2RQ3-LH may interchange with other BAF1-series models depending on specific voltage, contact, and actuator requirements. Common BAF1 variants include BAF1-2RN, BAF1-2RN2, and BAF1-2RQN8.
Works With
- Hardwired control logic and relay circuits
- PLC digital input cards (24 VDC or AC logic supply)
- Safety-rated I/O modules for machinery protection systems
- Motor starter and solenoid contactor circuits
- Standard industrial conduit and terminal block wiring
