A2B Limit Switch

Parameter Specification
Type Anti Two Block (A2B) Limit Switch
Function Prevents hook block–boom head collision
Switch Type Heavy-Duty Micro Switch with Actuating Weight Assembly
Contact Configuration 1 NO + 1 NC (or as per requirement)
Operating Voltage 24V DC / 110V AC / 230V AC (Customizable)
Current Rating Up to 10A
Housing Material Aluminium / Stainless Steel
Ingress Protection IP65
Cable Length 1 to 5 metres (as per model)
Operating Temperature -10°C to +60°C
Mounting Boom Tip or Jib Head
Output Signal Electrical Signal to Control Panel or LMI
Category:

A2B Limit Switch by Enrich Enterprises is a reliable crane safety device designed to help monitor the upper limit of the hook during lifting operations. It helps prevent the hook block from moving beyond the safe operating position, reducing the risk of contact between the hook and other crane components.

The switch uses a weighted chain assembly to detect the hook position and activate the limit mechanism when the configured upper limit is reached.

Key Features & Benefits

  • Upper Limit Protection: Helps prevent excessive upward movement of the crane hook.
  • Reliable Limit Detection: Detects the hook reaching the predefined limit position.
  • Heavy-Duty Construction: Designed for regular use in demanding crane environments.
  • Chain & Weight Assembly: Helps provide dependable mechanical activation during crane operation.
  • Improved Crane Safety: Helps reduce the risk of hook over-travel and potential equipment damage.
  • Easy Installation: Designed for convenient mounting on suitable crane structures.

Applications

  • EOT & overhead cranes
  • Gantry cranes
  • Hoists
  • Industrial lifting equipment
  • Material handling systems
  • Crane hook limit protection systems

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