Chain hoist limit switch SW2TS-AL

winchfor conveyorIP66

SW2TS-AL is a heavy-duty adjustable roller lever limit switch from Qlight designed for harsh, corrosive and extreme-temperature environments, providing robust stainless steel construction and high ingress protection.

Key features

• Robust structure featuring a body and head made of STS316L stainless steel, offering exceptional corrosion and salt resistance suitable for marine and chemical gas environments.
• Stable operational characteristics maintained after prolonged use through a proprietary dual-return spring system.
• Superior corrosion resistance using stainless steel external bolts, nuts and components for durability in polar and offshore conditions.
• Reliable performance in extreme low-temperature environments via cold-resistant micro switches, low-temperature grease and silicone packing.
• Designed for heavy-duty applications with identical mounting holes and external dimensions as standard switches.
• Typical applications include overhead cranes, large-scale conveyors, heavy industrial machinery, outdoor plant facilities, ship deck machinery, port cargo handling equipment, and chemical plants with corrosive gases.
• Customizable low-temperature and high-temperature variants available on request.

Specifications / technical data

• Product Feature: Adjustable Roller Lever Type
• Dimension: 43 (W) × 51.3 (H) × 200 (L) mm
• Materials: Body, Head, Bolt & Nut, Roller, Spring Rod - Stainless Steel (STS)
• Protection Grade: IP66
• Mechanical Life: Over 2 million operations
• Electrical Life: Over 0.2 million operations
• Allowable Operating Cycle: Mechanical: 120 operations per minute max; Electrical: 30 operations per minute max
• Insulation Resistance: 100 MΩ min. at 500 V DC
• Initial Resistance: 50 mΩ max.
• Dielectric Strength: Between non-continuous terminals: 1,000 V AC, 50–60 Hz for 1 minute; Between each terminal and non-conducting metal part: 2,000 V AC, 50–60 Hz for 1 minute
• Shock Resistance: Destruction approx. 1,000 m/s² (100 G); Malfunction approx. 250 m/s² (25 G)
• Vibration Resistance: 10 to 55 Hz, 1.5 mm double amplitude
• Allowable Operating Temperature Range: Standard: -10°C to +55°C; Cold-Resistant Type: -40°C to +40°C; Heat-Resistant Type: +50°C to +120°C
• Ambient Humidity Range: 45 ~ 85% RH
• Inrush current: NC (normally closed) Max. 20 A; NO (normally open) Max. 10 A