Elevator Tension Pulley Limit Switch QM-Z1R236-11Z - Manual Reset Safety Switch for OTIS & Universal Elevator Systems
The QM-Z1R236-11Z is a heavy-duty elevator tension pulley limit switch designed for critical safety applications in elevator systems. This manual reset switch monitors rope tension and travel limits, ensuring immediate system shutdown when abnormal conditions are detected. Fully compatible with OTIS elevators and suitable for various lift brands requiring Z1R236 series switches.
Key Features
- Manual Reset Function: Requires deliberate operator action to resume operation, enhancing safety
- Dual Contacts: 1NC (Normally Closed) + 1NO (Normally Open) configuration
- IP67 Protection: Dust-tight and protected against temporary immersion in water
- High Durability: Designed for heavy-duty industrial elevator environments
- Direct Replacement: Compatible with Schmersal Z1R236-11Z and OTIS original parts
- Wheel Turn Left Design: Optimized for specific tension pulley configurations
Technical Specifications
| Model Number | QM-Z1R236-11Z |
| Product Type | Elevator Tension Pulley Limit Switch / Travel Switch |
| Contact Configuration | 1NC + 1NO (Snap Action) |
| Rated Voltage | AC 380V / DC 24V |
| Rated Current | 2.5A (AC) / 1A (DC) |
| Protection Rating | IP67 (Dust-tight, Water-resistant) |
| Operating Travel | 6±1 mm |
| Operating Force | ≈5N |
| Reset Mode | Manual Reset |
| Mechanical Life | ≥ 1,000,000 operations |
| Electrical Life | ≥ 100,000 operations |
| Ambient Temperature | -30°C to +150°C |
| Installation | M20 Threaded Connection |
| Wheel Direction | Left Turn (Counter-clockwise) |
| Compliance | GB14048.5, IEC 60947-5-1 |
| Compatible Brands | OTIS, Schmersal, Generic Elevator Systems |
Key Advantages
- Safety Certified: Meets international elevator safety standards GB14048.5 and IEC 60947-5-1
- Manual Reset Protection: Prevents automatic restart after fault clearance, ensuring operator awareness
- Universal Compatibility: Direct replacement for OTIS and European elevator systems
- Extreme Environment Ready: Operates reliably in temperatures from -30°C to +150°C
- Long Service Life: 1 million+ mechanical operations for reduced maintenance costs