Description
Elevator Limit Switch T4K236-11Z-M20 Brief Introduction
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Product Name |
Elevator Limit Switch |
| Model Number | T4K236-11Z-M20 |
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Quality
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Original.Brand New
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Payment
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T/T. Paypal. Western Union
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Delivery
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3-5 Working Days
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Packaging
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Packed by carton
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Elevator Limit Switch T4K236-11Z-M20: Safe Protection Component from Nanjing Zhuye Elevatorparts
The Elevator Limit Switch T4K236-11Z-M20 is a high-reliability safety component specially designed for elevator operation protection, mainly used to control the stop position of elevators at the upper and lower terminal stations, prevent overtravel, and provide a critical safety barrier for elevator operation. As a core safety component supplied by Nanjing Zhuye Elevatorparts, this limit switch fully complies with international standards such as EN ISO 13849-1, EN IEC 60947-5-1 and BG-GS-ET-15, with excellent performance and strong environmental adaptability. It features a 1NO/1NC contact configuration, IP67 protection grade, double insulation, and a glass-fiber reinforced thermoplastic enclosure that is resistant to oil and petroleum spirit, widely compatible with mainstream elevator brands including Kone, Otis, Mitsubishi, LG Sigma and Hyundai.
Nanjing Zhuye Elevatorparts adheres to stringent quality control standards, and the T4K236-11Z-M20 elevator limit switch is a prime reflection of this commitment. Each switch undergoes rigorous pre-delivery testing, including mechanical life testing (minimum 20,000,000 operations), high-low temperature (-30℃ to 80℃) resistance tests, insulation performance verification, and contact reliability detection. It adopts an angle roller lever actuator that can be repositioned by 4×90°, M20×1.5 screw terminals for wiring, and supports cable sections ranging from 0.75mm² to 2.5mm², ensuring stable installation and signal transmission. The compact size (30mm×58.5mm×30mm) and lightweight design (gross weight 60g) make it easy to install in narrow elevator hoistway spaces, backed by a standard one-year warranty.
Usage Guide for Elevator Limit Switch T4K236-11Z-M20
The T4K236-11Z-M20 limit switch is a key safety component of elevators, so proper installation, debugging, and daily inspection are crucial to ensure elevator operation safety. Nanjing Zhuye Elevatorparts strongly recommends that all operations be performed by certified elevator maintenance technicians to avoid safety hazards caused by improper operation. Before installation, confirm that the switch model T4K236-11Z-M20 matches the elevator’s terminal station control system. For detailed installation dimensions, wiring diagrams, and contact configuration parameters, refer to the product manual provided by Nanjing Zhuye Elevatorparts or contact our professional technical support team.
1. Pre-Installation Preparation
First, cut off the elevator’s main power supply and lock the switch to prevent accidental startup, then move the car to the upper or lower terminal station to ensure a safe operation space. Prepare professional tools: screwdriver, torque wrench, wire strippers, insulation tape, multimeter, and level ruler. Clean the installation position in the elevator hoistway (upper and lower terminal station guide rail brackets) to remove dust, oil stains, and rust that may affect installation accuracy. Carefully inspect the T4K236-11Z-M20 switch for external damage, such as cracked enclosure, loose terminals, or damaged roller lever. Use a multimeter to test the contact continuity (NO contact is open when not actuated, NC contact is closed) to ensure no internal faults.
2. Installation & Wiring
Fix the T4K236-11Z-M20 switch on the pre-installed bracket according to EN 50047 mounting standards, adjust the position with a level ruler to ensure the roller lever is aligned with the elevator car’s collision block, and the actuating angle is 30° to the switch axis. Tighten the fixing screws according to the specified torque to prevent loosening caused by elevator vibration. Follow Nanjing Zhuye Elevatorparts’ wiring guidelines to connect the switch’s terminals to the elevator control cabinet: connect the power wire (0.75-2.5mm²) to the screw terminals, ensure firm connection, and wrap the joint with insulation tape to prevent short circuit. Separate the signal wire from the power wire to reduce electromagnetic interference, and confirm the contact configuration (1NO/1NC) matches the control system requirements before completing wiring.
3. Debugging & Daily Inspection
After installation and wiring, restore the elevator’s main power supply and start debugging. Operate the elevator in maintenance mode to run to the upper and lower terminal stations, verify that the roller lever is smoothly actuated when the car’s collision block touches it, the switch contacts are reliably switched, and the elevator stops accurately at the set position without overtravel. Test the switch’s response speed (actuating speed 336mm/min to 1m/s) to ensure it meets the safety standard. For daily inspection, follow TSG T5002—2017 regulations: Check the switch’s enclosure, terminals, and roller lever monthly for damage or loosening; use a multimeter to test contact continuity quarterly. Clean the roller lever and contacts regularly to remove dust and oil stains, ensuring sensitive actuation and reliable signal transmission.
Replacement Cycle of Elevator Limit Switch T4K236-11Z-M20
The replacement cycle of the T4K236-11Z-M20 limit switch depends on usage frequency, operating environment, and maintenance quality, referring to its mechanical life (20,000,000 operations) and industry safety standards. Under normal conditions—12-24 hours daily operation, regular inspection, and a dry, clean hoistway environment—Nanjing Zhuye Elevatorparts recommends a replacement cycle of 4-6 years. This cycle fully considers contact wear, enclosure aging, and actuator performance degradation during long-term use.
For elevators in high-traffic areas (airports, subway stations) or harsh environments (high humidity, heavy dust, oil pollution), the replacement cycle should be shortened to 2-4 years. Harsh environments easily cause enclosure corrosion and contact poor contact, while high-frequency actuation accelerates roller lever wear. For low-usage elevators (villas, small offices), proper daily inspection can extend the replacement cycle to 6-8 years. However, switches used for more than 5 years require semi-annual comprehensive inspections by Nanjing Zhuye Elevatorparts technicians to assess replacement needs in advance.
Replace immediately if: The switch fails to actuate or contact reliably; the enclosure is cracked or severely corroded, reducing protection grade; contact bounce exceeds the standard; the roller lever is worn or stuck; the switch causes frequent elevator terminal station stop faults; it fails to pass the annual elevator safety inspection. Use 100% genuine T4K236-11Z-M20 switches from Nanjing Zhuye Elevatorparts to ensure compatibility and elevator operation safety.
The Elevator Limit Switch T4K236-11Z-M20 from Nanjing Zhuye Elevatorparts integrates safety, reliability, and durability, providing critical protection for elevator terminal station operation. Backed by strict quality control, mature production technology, and comprehensive after-sales service, we supply genuine components and professional technical support including installation guidance and fault diagnosis. Choose Nanjing Zhuye Elevatorparts and the T4K236-11Z-M20 limit switch to ensure the long-term safe and stable operation of your elevators.
