Description
Elevator Limit Switch X42A-S02/2K-S
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Product Name |
Elevator Limit Switch |
| Model Number | X42A-S02/2K-S |
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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 X42A-S02/2K-S: High-Safety Protection Component from Nanjing Zhuye Elevatorparts
The Elevator Limit Switch X42A-S02/2K-S is a high-reliability electromechanical control component specially designed for elevator overtravel protection, mainly used to detect the position of elevator cars at upper and lower terminal stations, trigger circuit on-off through mechanical collision, and prevent elevator overtravel to ensure operational safety. 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 GB/T 14048.5, with excellent performance and strong adaptability to harsh environments. It features AC 250V/DC 24V rated voltage, 5A rated current, 1NO/1NC double-breakpoint silver alloy contacts, IP65 protection grade, and a flame-retardant nylon 66 enclosure, widely compatible with mainstream elevator brands including Kone, Otis, Mitsubishi and Schindler.
Nanjing Zhuye Elevatorparts adheres to stringent quality control standards, and the X42A-S02/2K-S elevator limit switch is a prime reflection of this commitment. Each switch undergoes rigorous pre-delivery testing, including mechanical life testing (minimum 5,000,000 operations), electrical life testing (500,000 operations), high-low temperature (-25℃ to 70℃) resistance tests, insulation performance verification (≥10MΩ with 500V megohmmeter), and contact reliability detection. It adopts an adjustable roller lever actuator that can be repositioned by 4×90°, M20 screw terminals supporting 0.75-2.5mm² cable sections, and an affirmatively disconnected NC contact design to avoid misoperation. The compact structure and easy installation design make it suitable for narrow elevator hoistway spaces, backed by a standard one-year warranty.
Usage Guide for Elevator Limit Switch X42A-S02/2K-S
As a key safety component for elevator operation, the X42A-S02/2K-S limit switch requires proper installation, debugging and daily inspection to ensure elevator 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 X42A-S02/2K-S matches the elevator’s terminal station control system. For detailed installation dimensions, wiring diagrams and contact 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 (upper and lower terminal station guide rail brackets) to remove dust, oil stains and rust that may affect installation accuracy. Carefully inspect the X42A-S02/2K-S switch for external damage, such as cracked enclosure, loose terminals or damaged roller lever. Use a multimeter to test contact continuity (NO contact is open when not actuated, NC contact is closed) to ensure no internal faults.
2. Installation & Wiring
Fix the X42A-S02/2K-S switch on the pre-installed bracket with two screws (simple and quick installation), 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 adjusted to 30-60° to ensure sensitive triggering. 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 and signal wires to the M20 screw terminals, ensure firm connection, and wrap the joint with insulation tape to prevent short circuit. Separate power and signal wires to reduce electromagnetic interference, and confirm the contact configuration 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 touched by the car’s collision block, the switch contacts are reliably switched, and the elevator stops accurately without overtravel. For daily inspection, follow TSG T7001-2023 and TSG T5002—2017 regulations: Check the switch’s enclosure, terminals and roller lever every 15 days 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 X42A-S02/2K-S
The replacement cycle of the X42A-S02/2K-S limit switch depends on usage frequency, operating environment and maintenance quality, referring to its mechanical life 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 3-5 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 2-3 years. Harsh environments easily cause enclosure corrosion and 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 5-7 years. However, switches used for more than 4 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 X42A-S02/2K-S switches from Nanjing Zhuye Elevatorparts to ensure compatibility and elevator operation safety.
The Elevator Limit Switch X42A-S02/2K-S 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 X42A-S02/2K-S limit switch to ensure the long-term safe and stable operation of your elevators.
