Overview
The Micro Switch LSD3K is a heavy-duty limit switch engineered for demanding industrial machinery applications. Manufactured by Honeywell, this NEMA A600-rated device delivers the snap-action reliability and electrical robustness required in manufacturing automation, material handling, and position-sensing control systems. The LSD3K operates at 10A and 600VAC, making it suitable for both standard AC industrial circuits and integrated control systems. This used, tested unit offers excellent value for replacement, retrofit, and upgrade projects.
Key Features
- Snap-Action SPDT Configuration: Single-pole, double-throw contact design ensures fast, reliable switching and reduced electrical arcing during operation.
- 600VAC / 250VDC Rating: Dual voltage capability supports both AC power circuits and DC control logic.
- NEMA A600 Classification: Heavy-duty sealing and construction withstand industrial environments with shock, vibration, temperature extremes, dust, and moisture exposure.
- Honeywell HDLS Series: Boss-and-socket head design with all-metal drive train ensures consistent operating characteristics across temperature ranges.
- Used, Fully Tested: Pre-checked for electrical function and mechanical operation; ready for immediate installation.
Technical Specifications
| Contact Configuration | SPDT (1NO/1NC) |
| Electrical Rating (AC) | 10A @ 600VAC |
| Electrical Rating (DC) | 10A @ 250VDC |
| Switching Action | Snap-Action (momentary) |
| Contact Material | Silver-alloy snap-action contacts |
| NEMA Rating | NEMA A600 (sealed heavy-duty) |
| Housing | Rugged metal and polymer composite body |
| Series | Honeywell HDLS (Heavy-Duty Limit Switches) |
| Manufacturer | Honeywell Sensing & Safety Products |
| Condition | Used, fully tested and functional |
Typical Applications
- Industrial press machinery and stamping equipment position control
- Conveyor system material detection and end-of-travel sensing
- Elevator and lift safety interlock circuits
- Machine tool spindle and axis limit detection
- Assembly automation and robotic work-cell position feedback
- Hazardous location and wet/corrosive environment machinery (when properly sealed)
Compatibility & Replacements
Compatible With
- Industrial relay circuits and contactor logic networks
- PLC input modules (AC/DC rated 24-250V I/O)
- Motor starters and overload protection schemes
- Alarm and safety interlock systems
- Standard industrial machinery control panels (600VAC / 250VDC rated)
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The LSD3K replaces other Honeywell HDLS-series limit switches with matching electrical ratings and SPDT contact configuration. Consult the Honeywell parts compatibility matrix or your control system documentation for specific cross-reference models.
Works With
- Honeywell HDLS Series actuating heads (plunger, rotary, and roller assemblies)
- Standard industrial terminal blocks and DIN-rail wiring systems
- Conduit entry systems: PG13.5, NPT, and metric thread adapters
- AC/DC sensor networks and distributed I/O architectures
- Legacy machinery control systems and modern automation platforms
