Overview
The Micro Switch LSD3K is a heavy-duty industrial limit switch engineered for demanding machine automation and process control. Rated at 600VAC with 10A thermal current, this NEMA A600 certified unit delivers reliable snap-action switching for monitoring equipment motion, position detection, and safety interlocking. The zinc die-cast housing with epoxy coating provides corrosion resistance in harsh factory environments.
Key Features
- NEMA A600 electrical utilization category for industrial AC applications
- Rated at 600VAC, 10A thermal current—suitable for motor control and equipment monitoring
- NEMA 1, 3, 4, 4X, 6, 6P, 12, 13 sealing (IP65/66/67)—protects against dust, moisture, and corrosive atmospheres
- Snap-action contacts for reliable, repeatable switching with no chatter
- Operating temperature range -12°C to 121°C (-10°F to 250°F)
- UL, CE, CSA, and CCC approved for global industrial use
Technical Specifications
Delivers precise electrical performance in high-voltage applications:
- Rated Operational Voltage (Ue): 600 Vac
- Rated Operational Current (Ie): 1.2 A
- Rated Thermal Current (Ith): 10 A
- Rated Insulation Voltage: 600 V
- Impulse Withstand Voltage: 2500 V
- Short Circuit Protection: Class J fuse, 10A @ 600V
- Sealing Rating: IP65/66/67; NEMA 1, 3, 4, 4X, 6, 6P, 12, 13
- Operating Temperature: -12°C to 121°C (-10°F to 250°F)
- Vibration Rating: 10 g (IEC 60068-2-6 compliant)
- Shock Rating: 50 g (IEC 60068-2-27 compliant)
- Housing Material: Zinc die-cast with electrostatic epoxy coating
Typical Applications
The LSD3K excels in critical industrial monitoring and control tasks:
- Machine tool position detection and travel limits
- Conveyor system end-of-run and reverse-position sensing
- Gate, door, and safety interlock monitoring
- Hydraulic and pneumatic cylinder stroke detection
- Emergency stop and process safety circuits
- Material handling and packaging equipment
Compatibility & Replacements
Compatible With
- Industrial motor starters and contactors rated for NEMA A600
- PLC analog and discrete input modules with 600VAC signal conditioning
- Safety relays and safety-rated control circuits
- Pneumatic and hydraulic pilot valve solenoids
- Industrial automation equipment requiring snap-action switching
Replaces / Drop-In Replacement For
- Honeywell Micro Switch LSD3K (direct part match)
- LSP3K (functionally equivalent in NEMA A600 family)
- Other HDLS-series heavy-duty limit switches with same actuator configuration
- Legacy industrial limit switches rated 600VAC 10A with compatible terminals
Works With
- Allen-Bradley CompactLogix and ControlLogix discrete input cards
- Siemens S7-1200 and S7-1500 PLC digital inputs
- Mitsubishi FX3U and Q-series PLC inputs
- Omron CP/CJ-series controller discrete I/O
- Standard industrial control relays and automation networks
- Pneumatic logic and hardwired safety circuits
