The Schmersal TV7H236-11Z is a safety-rated limit switch featuring a roller lever actuator (type 7H), 1 normally open (NO) plus 1 normally closed (NC) contact with positive break action, housed in glass-fibre reinforced thermoplastic with IP65/IP67 protection. With thermal test current of 10A, rated insulation voltage of 500V, and AC-15 rating of 230VAC/4A, this switch provides reliable position monitoring for safety applications per ISO 13849-1 (B10d NC contact: 20 million operations). The actuator head rotates in 4 × 90° increments and the lever adjusts in 10° steps over 360°. Applications include machine guarding position monitoring, elevator/crane limit detection, conveyor position sensing, and safety door monitoring in industrial automation systems.
**Q: What does the "positive break" feature mean for safety applications?**
A: The NC contact is mechanically forced open when the actuator is moved, ensuring the circuit breaks even if contacts weld. This is required for safety circuits per ISO 13849-1.
**Q: Can the actuator head be rotated for different approach directions?**
A: Yes, the actuator head can be repositioned in 4 × 90° increments, and the roller lever angle can be fine-tuned in 10° steps over a full 360° rotation.
**Q: What is the difference between TV7H236-11Z and ZV7H236-11Z?**
A: TV7H uses a thermoplastic housing while ZV7H uses a metal (zinc) housing for more demanding mechanical environments.
