Siemens 3SE2257-6XX40 SIRIUS Safety Position Switch
The Siemens 3SE2257-6XX40 is a robust mechanical safety position switch from the SIRIUS family. This molded-plastic-encapsulated switch is specifically designed for safety-related applications, such as monitoring the position of protective doors, covers, or movable machine parts. Engineered for reliability in harsh industrial environments, it features a separate actuator design and a high degree of protection, ensuring the safety of personnel and equipment in accordance with global industrial standards.
Technical Specifications & Safety Design
This safety switch is built with high-quality materials to provide precise switching and long-term mechanical durability.
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Part Number: 3SE2257-6XX40
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Product Brand: SIRIUS
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Enclosure Material: Glass-fiber reinforced thermoplastic.
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Contacts: 1 NC (Normally Closed) slow-action contact with positive opening.
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Pull-out Force: 5 N.
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Protection Class: IP67 (Dust-tight and protected against immersion).
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Ambient Temperature: Operating range from -30 °C to +80 °C.
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Cable Entry: 3x (M20 x 1.5) lateral and face-end operation.
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Note: This unit is supplied without the actuator; separate actuators must be ordered based on mounting needs.
Key Benefits for Industrial Safety
The 3SE2257-6XX40 stands out for its versatility and high switching capacity. Its «positive opening» design ensures that the NC contact is mechanically forced open if the actuator is removed, providing a fail-safe signal to the safety relay or PLC.
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Universal Application: Ideal for monitoring protective gates in manufacturing, packaging, and automotive assembly lines.
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Rugged Construction: The reinforced plastic housing offers excellent resistance to industrial oils, chemicals, and mechanical impact.
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Flexible Installation: Featuring three cable entries and the ability to operate from the front or side, it fits easily into tight machine spaces.
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Certified Reliability: Suitable for use in safety circuits up to SIL 3 / PLe when integrated into a monitored safety system.
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Professional Commercial Support for Your Procurement
As specialized suppliers of Siemens SIRIUS safety technology, we provide the technical expertise and logistics reliability your facility requires.
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100% Genuine Siemens: We guarantee that every 3SE2257-6XX40 is an original, brand-new factory component.
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Commercial Guidance: Our sales team can assist you in selecting the correct separate actuator (standard, radius, or universal) to match your door configuration.
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Fast Global Shipping: We utilize an express logistics network to deliver your safety switches quickly, minimizing downtime during machine maintenance.
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Available Stock: We maintain a consistent inventory of 3SE2 series components to support urgent industrial safety upgrades.
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