Industrial Limit Switch CR137-BZ-T2 with Roller Lever IP54 Protection and 10 A 250 V Rating for Elev

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December 09, 2025
Category Connection: Elevator Spare Parts
Brief: Ever wondered how a limit switch ensures failsafe operation in demanding industrial environments? This video provides an in-depth look at the CR137-BZ-T2 industrial limit switch, showcasing its robust construction, IP54-rated protection, and positive-break safety mechanism. You'll see how its roller lever design and long mechanical life make it ideal for elevator safety and other critical applications.
Related Product Features:
  • Features a positive-break NC contact for failsafe compliance with IEC 60947-5-1, ensuring machine stop even during contact weld scenarios.
  • Equipped with a fixed roller lever that provides consistent 1.5 mm pre-travel without requiring field adjustments.
  • Offers IP54 protection, making it suitable for both indoor and outdoor panel mounting in dusty or oily conditions.
  • Designed with a 30-million-cycle mechanism to significantly reduce maintenance downtime and enhance reliability.
  • Includes two M20 cable entries for fast and flexible wiring, accommodating cable diameters from 6 to 12 mm.
  • Constructed with a glass-fibre reinforced PBT housing that withstands high temperatures up to 80°C without performance loss.
  • Rated for 10 A at 250 V, with utilization categories AC-15 and DC-13 for versatile electrical control applications.
  • Operates reliably across a wide ambient temperature range from -30°C to +80°C for harsh industrial environments.
Faqs:
  • What is the key safety feature of the CR137-BZ-T2 limit switch?
    The key safety feature is its positive-break NC (Normally Closed) contact, which ensures the machine stops even if the contacts weld together, providing failsafe compliance with IEC 60947-5-1 standards.
  • What level of environmental protection does this switch offer?
    It has an IP54 protection rating, which means it is protected against dust ingress and water splashes from any direction, making it suitable for both indoor and outdoor industrial applications.
  • How does the fixed roller lever design benefit installation and operation?
    The fixed roller lever provides a consistent 1.5 mm pre-travel, eliminating the need for field adjustments and ensuring reliable and repeatable actuation in position sensing applications.
  • What are the typical applications for the CR137-BZ-T2 limit switch?
    It is commonly used in elevator limit and slowdown systems, overhead-door end-stops, conveyor over-travel guards, and packaging-machine position feedback due to its robust design and safety features.