Eaton LS-S20A Plunger Limit Switch, 400 V AC/4 A, 1 NO/1 NC, IP67, Thermoplastic 106810

In automated machinery and conveyor systems, position detection failures can halt production and create safety hazards. The Eaton LS-S20A plunger limit switch provides reliable end-position sensing with a robust snap-action mechanism and IP67 sealing, ensuring dependable operation even in dusty or wet environments.

Who is it for

This limit switch is ideal for machine builders, panel builders, and maintenance engineers who need a compact, durable position switch for industrial control circuits. It suits applications such as machine tool limit stops, conveyor belt alignment, and safety interlock monitoring.

Main features

• Plunger actuator with momentary (spring-return) operation
• 1 NO + 1 NC (SPDT) snap-action contacts
• Rated for 400 V AC / 4 A (AC-15) and 250 V DC / 0.5 A (DC-13)
• IP67 ingress protection against dust and temporary immersion
• Thermoplastic housing for corrosion resistance and light weight
• Screw terminals and M20 x 1.5 cable entry for easy wiring

Specifications

• Actuator type: Plunger
• Actuator operation: Momentary (spring-return)
• Contact configuration: 1 NO / 1 NC (SPDT)
• Rated operational voltage (AC): 400 V AC
• Rated operational current (AC-15): 4 A
• Rated operational voltage (DC): 250 V DC
• Rated operational current (DC-13): 0.5 A
• Ingress protection: IP67
• Housing material: Thermoplastic
• Connection type: Screw terminals
• Cable entry: M20 x 1.5
• Switching principle: Snap-action
• Operating temperature range: -25 to +70 °C
• Mechanical life: > 10 million operations
• Electrical life: > 0.1 million operations

Tips

For best reliability, mount the switch so that the plunger is actuated within its specified travel limits. Use a suitable cable gland to maintain the IP67 rating at the cable entry.