These complete units are popular versions of the SIRIUS 3SE5 limit switches. The standard design and function of the limit switches not only make it easy to select the right switch but also enable quick and easy installation, wiring and maintenance.
The SIRIUS 3SE5 is designed for safety applications up to Category 4 according to ISO 13849-1 (EN 954-1) when you select the right product and use them properly in conjunction with fail-safe evaluation units such as the 3TK28, ASISafe, SIMATIC or SINUMERIK.

Open-type position switch IP20 (3SE5 250-*****)
Plastic enclosures according to EN 50047, 31 mm wide, IP65, 1 cable entry (3SE5 232-***** & 3SE5 234-*****)
Plastic enclosures according to EN 50041, 40mm wide, IP66/IP67, 1 cable entry (3SE5 132-***** & 3SE5 134-*****)
Plastic enclosures, 50 mm wide, IP66/IP67, 2 cable entries (3SE5 242-*****)
Metal enclosures according to EN 50047, 31 mm wide, IP66/IP67, 1 cable entry (3SE5 212-***** & 3SE5 214-*****)
Metal enclosures according to EN 50041, 40mm wide, IP66/IP67, 1 cable entry (3SE5 112-*****)
Metal enclosures, 56 mm wide, IP66/IP67, 3 cable entries (3SE5 122-*****)
XL metal enclosures with 4 to 6 contacts, 56 mm wide, IP66/IP67, 3 cable entries (3SE5 162-*****)
Enclosures with an ambient temperature to -40°C (3SE5 ***-*****-1AJ0)

With contact blocks with two or three contacts (screw terminals) designed as slow-action or snap-action contacts; the slow-action contacts also with make-before-break (refer to tech. data)
Optional LED status display (3SE5 ***-1K*** & 3SE5 ***-1L***)
With M20 ´ 1.5 connection thread or mounted 4 or 5 pole M12 connector socket (refer to tech. data)
Versions with increased corrosion protection (3SE5 ***-*****-1CA0)
Versions for operating temperature up to -40°C (3SE5 ***-*****-1AJ0)
Metal enclosure for explosion protection, ATEX, (3SE5 ***-*****-1DA0)

Easy replacement and mounting of actuator heads through plug mounting with uniform interface
Integrated chlorinated rubber diaphragm (high functional safety in cold and aggressive environments)
All actuator heads can be rotated in 22.5° increments
Mounting time reductions of up to 25% through rapid connection system for plastic enclosures
Versions with 3-pole contact blocks ensure increased safety through redundant disconnection and additional signalling while featuring the same enclosure dimensions as 2-pole contact blocks
IP65/66/67 protection
Switching points and mounting according to EN 50041 or EN 50047
Built in rounded plunger with 3mm over travel, (total travel 9mm) for greater tolerance when switching

This position switch is suitable for various automation applications, featuring a robust metal housing that ensures functionality in challenging environments. Its high mechanical life reduces the frequency of replacements, thereby enhancing operational efficiency across industrial settings.

• IP66 and IP67 ratings provide effective moisture protection
• Dual pole and throw configuration allows for versatile control
• Roller lever actuator ensures precise operation
• Positive opening function enhances safety
• M20 connection type facilitates easy installation
• Operates effectively in temperatures ranging from -25°C to +85°C

• Ideal for safety-critical installations requiring dual contact circuits
• Used in machinery benefiting from space-saving designs
• Suitable for equipment that demands strong environmental protection
• Applicable in various industrial automation settings
• Designed for that require high mechanical endurance

Installation is straightforward, using standard tools due to the screw fixing method and M20 connection type.

Regular visual inspections and maintaining cleanliness will help sustain functionality and prolong service life.

Yes, the IP66 and IP67 ratings protect against moisture ingress, making it suitable for humid conditions.

It typically operates for up to 100,000 cycles under AC-15 conditions at 230V.

The device is specifically designed for use with the roller lever actuator, ensuring optimal performance.

Safety Limit Switch