Pullwire operated safety switches

• 3 Year Warranty
• Sealed to IP 65
• Corrosion resistant components
• Tough UV Stabilised lightweight polycarbonate enclosure
• Designed for operation in arduous environments
• Intrinsically safe versions
• ATEX certified versions Group11 Category 1D for use in explosive dusts
• Double ended mechanism
• Snap action operation of internal switches as standard
• Slack or taut wire operation
• Cats eye indicator with option of semaphore flag or padlock facility

The Davis Derby StedFAST conveyor pullwire operated safety switch is used all around the world in a variety of industries including coal mining, quarrying, ports and cement plants.

There is a version approved for use in areas where there is a hazard from explosive dusts such as coal dust, fertilisers, flour, grain and other explosive dusts.

The body is moulded from a high stability UV protected polycarbonate which is tough and light in weight. The incoming and outgoing cables are connected via cable glands or plugs and sockets to a 12 way easy access terminal block.

The operating knob is sealed with an O ring and the lid is fitted with a fully recoverable closed cell silicon gasket.

The StedFAST pull key has a snap action mechanism to meet the requirements of PD 5304:2000 and BSEN 620:2002 “Standards for trough conveyors”.

A range of compatible Relay control Units and accessories are also available to interface with the conveyor control contactor.


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