1LS-J550S

Type: Explosion-proof safety limit switch

Actuator: Roller lever (1K type), head rotatable in 90° steps

Contacts: 2NC (safety contacts only, no NO)

Housing: Aluminium die-cast, painted surface (robust for harsh areas)

Cable Entry: M20 × 1.5

Protection Class: IP67

Explosion Protection: ATEX certified, suitable for Zone 2 (gas) & Zone 22 (dust)

Electrical Ratings:

• AC-15: 4 A / 230 V

• DC-13: 4 A / 24 V

• Rated insulation voltage: 500 V

• Rated impulse withstand: 6 kV

Thermal Test Current: 10 A

Mechanical Life: ≥ 30 million operations

B10d: 20 million (NC), mission time 20 years

Actuating Force: ~12 N (min)

Actuating Speed: ≤ 0.5 m/s

Connections: Screw terminals for 0.75–2.5 mm² cables

Cable Diameter: 7–12 mm

Dimensions: ~38 × 40.5 × 118.5 mm

Weight: ~275 g

Standards: EN ISO 13849-1, IEC 60947-5-1, EN IEC 60079 (explosion safety)

Type: Limit switch

Actuator: Roller plunger (RMS = brass roller version)

Contacts: 1NO + 1NC (snap action)

Housing: Glass-fiber reinforced thermoplastic (self-extinguishing)

Cable Entry: M20 × 1.5

Protection: IP67, double insulation

Operating Force: Max ~9 N

Electrical Ratings:

• AC: 230 V / 4 A (AC-15)

• DC: 24 V / ~1 A (DC-13)

• Rated insulation: up to 500 V

Temperature Range: −30 °C to +80 °C

Durability: Oil & petroleum-resistant

Dimensions: ~30 × 58.5 × 30 mm

Weight: ~32 g

Special Features: Slim design, long mechanical life, high reliability for safety/industrial use