The XCMG Height Limit Switch, also known as the A2B Switch or Anti-Two Block Switch, is an important crane safety component used on XCMG truck cranes and lifting equipment. The part number 803814890 with model XESA2B-CL15M is designed to prevent dangerous two-block conditions during lifting operations, helping protect the boom, hook block, wire rope, and operator safety.
This switch is widely used in XCMG mobile cranes, truck cranes, and other lifting machinery applications.
What Is an A2B Switch (Anti-Two Block Switch)?
The Anti-Two Block (A2B) switch is a critical crane safety device installed near the boom tip. It monitors the hook block position and automatically triggers a warning or stop signal when the hook approaches the boom head too closely.
Without a functioning A2B switch, the crane may suffer:
Wire rope damage
Boom tip collision
Hook block impact
Hoisting system failure
Serious safety accidents
The XESA2B-CL15M height limit switch helps improve lifting safety and supports reliable crane operation under demanding working conditions.
803814890 XCMG Height Limit Switch Specifications
Product Information
Product Name: XCMG Height Limit Switch
Alternative Names: A2B Switch, Anti-Two Block Switch, Height Limiter
XCMG Part Number: 803814890
Model Number: XESA2B-CL15M
Brand Compatibility: XCMG XCT QY series
Condition: New
Features of XCMG XESA2B-CL15M Height Limit Switch
Main Advantages
Prevents dangerous two-block conditions
Improves lifting safety during hoisting
Stable electrical signal output
Durable structure for harsh construction environments
Suitable for heavy-duty crane applications
Easy replacement and installation
Information Customers Should Provide Before Ordering
To ensure the correct spare part is supplied, customers are usually advised to provide the following information:
For quotation and compatibility confirmation, please send:
Crane brand and model ( nameplate )
Original part number (if available)
Product model (if you knew)
Photos of the old switch
Machine serial number (VIN if available)
Quantity required
Shipping address and ZIPCODE
Providing accurate information helps avoid compatibility issues and improves delivery efficiency.Our team can help confirm the correct XCMG crane spare parts solution for your equipment.
Packaging and Shipping
International Export Support
Express delivery (DHL / FedEx / UPS)
Air freight
Sea freight
Consolidated spare parts shipment
Professional export packaging is available to help protect electrical components during international transportation.
What XCMG Crane Spare Parts We Can Supply ?
We supply XCMG crane spare parts for various truck crane and lifting equipment models, including electrical parts, sensors, limit switches, hydraulic components, LMI system parts, and safety devices.
