The SIRIUS 3SE5 limit switches provide the dependable performance required in everyday industrial applications thanks to their modular, consistent design and wide choice of variants and operating mechanisms.
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)

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 top plunger is an effective actuator designed for a variety of industrial applications. Its robust construction and quick action functionality make it suitable for automation systems. This product offers durability, addressing the needs of users in the electrical and mechanical sectors.

• Compact dimensions allow for easy installation in confined spaces
• Quick action mechanism enables rapid response in critical situations
• IP65 rating protects against dust and moisture
• Configurable as normally open or normally closed for flexible Applications

• Implemented in safety where swift response is essential
• Suitable for material handling and conveyor systems
• Integrated into machinery requiring dependable actuation solutions
• Employed in environments exposed to dust and moisture

Yes, it can operate effectively in temperatures up to 85°C, making it suitable for such environments.

The normally open or normally closed configuration allows for flexible integration in various control systems.

Yes, it can be easily integrated with various industrial automation systems.

Safety Limit Switch