• Siemens SIRIUS 3SE5 Position Switches, Plastic, 50 mm
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Siemens SIRIUS 3SE5 Position Switches, Plastic, 50 mm

Siemens SIRIUS 3SE5 Position Switches, Plastic, 50 mm

SIRIUS 3SE52 mechanical position switches in a 50 mm plastic enclosure with two cable entries and operating points to EN 50047.

Key features

  • Modular system: enclosure, contact block and actuator head can be replaced individually
  • Positive opening NC contacts according to IEC 60947-5-1, Annex K for safety circuits
  • Slow-action or snap-action contact blocks with 2 or 3 contacts
  • Optional 2 LEDs (yellow/green) for 24 V DC or 230 V AC switching-state display
  • Actuator heads can be rotated in 90° steps

Specifications

Brand Siemens
Product line SIRIUS 3SE52 (3SE524)
Enclosure Plastic, width 50 mm
Operating points EN 50047
Degree of protection IP66 / IP67
Cable entry 2 x M20 x 1.5
Category Position Switches
Source Siemens Catalog IC 10 · 2026, p. 1095-1096
3SE5242-0BC05 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 1 NC, slow-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0KC05 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, slow-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0PC05 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 2 NO + 1 NC, slow-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0MC05 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, slow-action | Variant: Make-before-break | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0CC05 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 1 NC, snap-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0LC05 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, snap-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0HC05 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 1 NC, snap-action | Variant: Integrated | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0FC05 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 1 NC, snap-action | Variant: Short stroke, integrated | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0GC05 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 1 NC, snap-action | Variant: Contact distance 2 x 2 mm | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0BC05-1CA0 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 1 NC, slow-action | Variant: Corrosion-protected | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0KC05-1CA0 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, slow-action | Variant: Corrosion-protected | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0PC05-1CA0 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 2 NO + 1 NC, slow-action | Variant: Corrosion-protected | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0MC05-1CA0 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, slow-action | Variant: Make-before-break; Corrosion-protected | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0LC05-1CA0 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, snap-action | Variant: Corrosion-protected | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0HC05-1CA0 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 1 NC, snap-action | Variant: Integrated; Corrosion-protected | Connection: Cable entry 2 x M20 x 1.5
3SE5242-1KC05 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, slow-action | Variant: 2 LEDs 24 V DC | Connection: Cable entry 2 x M20 x 1.5
3SE5242-3KC05 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, slow-action | Variant: 2 LEDs 230 V AC | Connection: Cable entry 2 x M20 x 1.5
3SE5242-1LC05 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, snap-action | Variant: 2 LEDs 24 V DC | Connection: Cable entry 2 x M20 x 1.5
3SE5242-3LC05 Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, snap-action | Variant: 2 LEDs 230 V AC | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0BD03 Actuator: Roller plunger | Lever/plunger: - | Roller: Plastic roller 10 mm | Contacts: 1 NO + 1 NC, slow-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0LD03 Actuator: Roller plunger | Lever/plunger: - | Roller: Plastic roller 10 mm | Contacts: 1 NO + 2 NC, snap-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0HD03 Actuator: Roller plunger | Lever/plunger: - | Roller: Plastic roller 10 mm | Contacts: 1 NO + 1 NC, snap-action | Variant: Integrated | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0BE10 Actuator: Roller lever | Lever/plunger: Metal lever | Roller: Plastic roller 13 mm | Contacts: 1 NO + 1 NC, slow-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0LE10 Actuator: Roller lever | Lever/plunger: Metal lever | Roller: Plastic roller 13 mm | Contacts: 1 NO + 2 NC, snap-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0HE10 Actuator: Roller lever | Lever/plunger: Metal lever | Roller: Plastic roller 13 mm | Contacts: 1 NO + 1 NC, snap-action | Variant: Integrated | Connection: Cable entry 2 x M20 x 1.5
3SE5244-0LE10-1AE0 Actuator: Roller lever | Lever/plunger: Metal lever | Roller: Plastic roller 13 mm | Contacts: 2 NC, snap-action | Variant: Standard | Connection: M12 plug, 4-pole right (250 V, 4 A)
3SE5242-0BK21 Actuator: Twist lever | Lever/plunger: Metal lever 21 mm | Roller: Plastic roller 19 mm | Contacts: 1 NO + 1 NC, slow-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0LK21 Actuator: Twist lever | Lever/plunger: Metal lever 21 mm | Roller: Plastic roller 19 mm | Contacts: 1 NO + 2 NC, snap-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0HK21 Actuator: Twist lever | Lever/plunger: Metal lever 21 mm | Roller: Plastic roller 19 mm | Contacts: 1 NO + 1 NC, snap-action | Variant: Integrated | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0HK50 Actuator: Twist lever, adjustable length | Lever/plunger: Metal lever 100 mm | Roller: Plastic roller 19 mm | Contacts: 1 NO + 1 NC, snap-action, integrated | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
Position SwitchesSiemens
30 product codes available in this family
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Siemens SIRIUS 3SE5 Position Switches, Plastic, 50 mm

Brand Siemens·Position Switches

Available part numbers (30)

3SE5242-0BC05, 3SE5242-0KC05, 3SE5242-0PC05, 3SE5242-0MC05, 3SE5242-0CC05, 3SE5242-0LC05, 3SE5242-0HC05, 3SE5242-0FC05, 3SE5242-0GC05, 3SE5242-0BC05-1CA0 + 20 more — see full table ↓

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Product codes & specifications
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Product codeSpec
3SE5242-0BC05Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 1 NC, slow-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0KC05Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, slow-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0PC05Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 2 NO + 1 NC, slow-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0MC05Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, slow-action | Variant: Make-before-break | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0CC05Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 1 NC, snap-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0LC05Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, snap-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0HC05Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 1 NC, snap-action | Variant: Integrated | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0FC05Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 1 NC, snap-action | Variant: Short stroke, integrated | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0GC05Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 1 NC, snap-action | Variant: Contact distance 2 x 2 mm | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0BC05-1CA0Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 1 NC, slow-action | Variant: Corrosion-protected | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0KC05-1CA0Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, slow-action | Variant: Corrosion-protected | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0PC05-1CA0Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 2 NO + 1 NC, slow-action | Variant: Corrosion-protected | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0MC05-1CA0Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, slow-action | Variant: Make-before-break; Corrosion-protected | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0LC05-1CA0Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, snap-action | Variant: Corrosion-protected | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0HC05-1CA0Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 1 NC, snap-action | Variant: Integrated; Corrosion-protected | Connection: Cable entry 2 x M20 x 1.5
3SE5242-1KC05Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, slow-action | Variant: 2 LEDs 24 V DC | Connection: Cable entry 2 x M20 x 1.5
3SE5242-3KC05Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, slow-action | Variant: 2 LEDs 230 V AC | Connection: Cable entry 2 x M20 x 1.5
3SE5242-1LC05Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, snap-action | Variant: 2 LEDs 24 V DC | Connection: Cable entry 2 x M20 x 1.5
3SE5242-3LC05Actuator: Rounded plunger | Lever/plunger: - | Roller: - | Contacts: 1 NO + 2 NC, snap-action | Variant: 2 LEDs 230 V AC | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0BD03Actuator: Roller plunger | Lever/plunger: - | Roller: Plastic roller 10 mm | Contacts: 1 NO + 1 NC, slow-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0LD03Actuator: Roller plunger | Lever/plunger: - | Roller: Plastic roller 10 mm | Contacts: 1 NO + 2 NC, snap-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0HD03Actuator: Roller plunger | Lever/plunger: - | Roller: Plastic roller 10 mm | Contacts: 1 NO + 1 NC, snap-action | Variant: Integrated | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0BE10Actuator: Roller lever | Lever/plunger: Metal lever | Roller: Plastic roller 13 mm | Contacts: 1 NO + 1 NC, slow-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0LE10Actuator: Roller lever | Lever/plunger: Metal lever | Roller: Plastic roller 13 mm | Contacts: 1 NO + 2 NC, snap-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0HE10Actuator: Roller lever | Lever/plunger: Metal lever | Roller: Plastic roller 13 mm | Contacts: 1 NO + 1 NC, snap-action | Variant: Integrated | Connection: Cable entry 2 x M20 x 1.5
3SE5244-0LE10-1AE0Actuator: Roller lever | Lever/plunger: Metal lever | Roller: Plastic roller 13 mm | Contacts: 2 NC, snap-action | Variant: Standard | Connection: M12 plug, 4-pole right (250 V, 4 A)
3SE5242-0BK21Actuator: Twist lever | Lever/plunger: Metal lever 21 mm | Roller: Plastic roller 19 mm | Contacts: 1 NO + 1 NC, slow-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0LK21Actuator: Twist lever | Lever/plunger: Metal lever 21 mm | Roller: Plastic roller 19 mm | Contacts: 1 NO + 2 NC, snap-action | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0HK21Actuator: Twist lever | Lever/plunger: Metal lever 21 mm | Roller: Plastic roller 19 mm | Contacts: 1 NO + 1 NC, snap-action | Variant: Integrated | Connection: Cable entry 2 x M20 x 1.5
3SE5242-0HK50Actuator: Twist lever, adjustable length | Lever/plunger: Metal lever 100 mm | Roller: Plastic roller 19 mm | Contacts: 1 NO + 1 NC, snap-action, integrated | Variant: Standard | Connection: Cable entry 2 x M20 x 1.5

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