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The 3SE5112-0CE01 is a high-precision mechanical position switch (limit switch) from the Siemens SIRIUS 3SE5 series. These switches are the industry standard for detecting motion sequences and converting them into electrical signals for control systems.
The "0CE01" model is a complete unit, meaning it comes pre-assembled with a specific actuator and contact block.
Enclosure: 40 mm wide, Metal (Zinc die-casting), IP66/IP67 rated.
Standard: Complies with EN 50041 (mounting and operating points).
Actuator: Roller lever (Metal lever with a 22 mm plastic roller).
Contacts: 1 NO (Normally Open) + 1 NC (Normally Closed) Snap-action contacts
Connection: 1x M20 x 1.5 cable entry.
Safety: Suitable for safety-related applications (Positive opening according to IEC 60947-5-1).
The SIRIUS 3SE5 series is modular. You can think of the model number as a combination of three parts: the basic switch (body), the contact block, and the actuator head.
While the -0CE01 uses snap-action contacts, other models in the same 40 mm metal body offer different electrical behaviors:
3SE5112-0BE01: Same hardware, but with Slow-action contacts (switching speed depends on actuation speed).
3SE5112-0LE01: Upgraded to 1 NO / 2 NC quick-action contacts for redundant safety paths.
3SE5112-0KA00: The "Basic Switch" only (no actuator head) with 1 NO / 2 NC slow-action contacts.
If you need a different physical trigger but the same electrical specs:
Model Number Actuator Type Key Feature
:--- :--- :---
3SE5112-0CB01 Plain Plunger High-grade steel plunger
3SE5112-0CD02 Roller Plunger High-grade steel roller
3SE5112-0CF01 Angular Roller Lever For lateral approach
3SE5112-0CH01 Twist Lever Adjustable in 22.5° increments
3SE5112-0CR01 Spring Rod Flexible 143mm actuator
3SE5132-0CE05: The Plastic equivalent. It has the same 40mm width and roller lever but uses a high-strength plastic enclosure (IP65) for cost-effectiveness in less-corrosive environments.
3SE5212-0CE10: The Compact version. 31 mm wide metal enclosure (EN 50047), often used where space is limited.
If you need to replace just a part of your 3SE5112-0CE01, these are the individual component part numbers:
Basic Switch (Body): 3SE5112-0CA00 (The metal enclosure with 1NO/1NC snap-action contacts).
Actuator Head: 3SE5000-0AE01 (The metal lever and plastic roller assembly).
Replacement Contacts: 3SE5000-0CA00 (Internal contact block).
More detail about Optimus Control Industry PLTAll 3SE5 switches with the "positive opening" symbol (a circle with an arrow) can be used in safety circuits up to SIL 3 or PL e when used in a redundant configuration with a safety relay.
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