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Conveyor belt control, alignment and signal switches

AF Mine Signal Switches

AFU, AFC, AFS, AFM and AFK mine signal switches from Eaton's Crouse-Hinds Division are used for signaling circuits or for manual remote control of magnetic motor starters in non-hazardous areas of mines or process industry facilities where a rugged enclosure is needed for protection from falling ore and other material or dripping water.

These mine signal switches are mounted on walls or in shaftways and actuated by pulling the line or cable attached to the loop at the bottom of the unit.

Certifications and compliances

  • NEMA 3 (AFU models)
  • Evaluated to SPE 1000 (CEC) (AFC, AFS, AFM and AFK models)

 

Design features

AFU models:
  • Sturdy raintight enclosure with heavy mounting lugs
  • Wires enter enclosure through clearance holes in the underside
  • Switches are actuated by a spring-loaded plunger which returns to the normal position when the operating force is removed
  • Units are furnished with heavy duty motor control pushbuttons; several of these may be interconnected electrically for remote control of a magnetic motor starter from more than one location

AFC, AFS, AFM and AFK models:

  • Water shedding cover
  • Mounting lugs for 1/2” bolts or lag screws
  • Single-pole normally open double break switch contacts
  • Switch is actuated by a spring-loaded plunger which returns to the normal position when the operating force is removed
  • Standard pull spring on switch unit is 10 pounds
  • Terminal block with heavy wire terminals is mounted in the box and readily accessible for ease of wiring
  • Housing has ¾” conduit hub
  • No tools required, no screws to remove, no wiring to disturb for inspection or switch replacement (AFS, AFM and AFK models)
  • Buzzer provides audible signal (AFM and AFK models)
  • 10 watt continuous duty resistor mounted in panel to keep interior dry (AFM and AFK models)
  • Intended for use with separate howlers, bells, horns or other signaling devices (AFC models)
  • Visible signal observable from the front and both sides through port holes (AFK models)

Standard materials

  • Enclosure – Feraloy iron alloy
  • Cover – sheet steel (AFC, AFS, AFM and AFK models)
  • Plunger – steel
  • Loop – bronze
Specifications
For complete listing of catalog numbers, please visit the resources page for this product family and look under "Catalogs".
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