Overview
The Honeywell Micro Switch LSA1A is an industrial-grade heavy-duty limit switch part of Honeywell’s HDLS (Heavy-Duty Limit Switch) series. Honeywell’s MICRO SWITCH heavy-duty limit switches feature modular construction that allows for a wide variety of actuator styles, operating heads, and electrical circuitry options. This used unit is fully functional and suited for production lines, conveying systems, and machinery requiring reliable position sensing in demanding environments.
Key Features
- SPDT contact form (1NO/1NC) with 10A current rating
- Side rotary actuator with 0.45N operating force
- Plug-in design—switching component assembles to base with two screws, reducing replacement downtime
- NEMA 1, 3, 4, 4X, 6, 6P, 12, 13 and IP65/66/67 environmental sealing ratings
- All-metal gear drive for extended mean time between failure (MTBF)
- Suited for demanding indoor and outdoor environments subjected to shock, vibration, temperature extremes, dust, splashing water, coolant, and hose-directed water
Technical Specifications
- Voltage Rating: 600VAC, 250VDC
- Current Rating: 10A
- Contact Configuration: SPDT (1NO/1NC)
- Actuator Type: Side rotary
- Operating Force: 0.45N maximum
- Connection: 0.5-inch 14NPT conduit
- Housing Material: Zinc die-cast
- Environmental Ratings: NEMA 1, 3, 4, 4X, 6, 6P, 12, 13
- IP Rating: IP65/IP66/IP67
- Certifications: UL, CSA, RoHS Compliant
- Series: HDLS Heavy-Duty Limit Switch
Typical Applications
LSA1A switches are used in pulp and paper, food processing, packaging, automotive, conveying, amusement park rides, power plants, machine tools, material handling, outdoor electromechanical structures, balers and compactors, conveyors, off-road equipment, and agricultural equipment. The SPDT snap-action design makes it ideal for gate position detection, travel limit sensing, and emergency stop circuits.
Compatibility & Replacements
Compatible With
- Industrial control systems requiring 600VAC, 10A rated switches
- Modular plug-in receptacle bases from Honeywell HDLS series
- Standard 0.5-inch 14NPT conduit enclosures
- Rockwell Automation, Siemens, and GE control architectures (position sensing input)
- Legacy industrial machinery and equipment designed for NEMA 4/4X rated switches
Replaces / Drop-In Replacement For
- Honeywell LSA1A (all variants)
- Previous-generation HDLS side rotary limit switches with identical electrical ratings
- OEM equipment originally specified with Honeywell LSA1A SPDT 10A 600VAC switches
Works With
- Allen-Bradley ControlLogix, CompactLogix, and PLC-5 controllers (as discrete input)
- Honeywell control modules and limit switch bases
- Industrial enclosures rated NEMA 4/4X for harsh environments
- Conduit-mounted and panel-mounted configurations
- All standard industrial electrical conduit and wiring systems
