Pigmented Black DMC (Dough Mould Compound) Pull Cord Switch

This model CS 101 of Pull Cord Switch will have 01 NO & 01 NC Contact pair along with powder coated MS Lever with SS Rings for attaching Wire Rope.

Our switches are housed in non-corrosive dust and waterproof D.M.C (Dough Moulding Compound) enclosure having IP 65 grade protection and is able to withstand any harsh climatic conditions. Contacts are rated for 16 Amps at 440 Volts AC. Operating handle mechanism is manual reset type. Easy termination of cable through 02 Nos. of 3/4" B.S.C. threaded cable entry holes. Switch is generally mounted at a distance of 15 metres.

There are several safety switches used in the belt conveyor to operate in emergency conditions. Pull Cord Switch is one of them, which operator or user can operate to stop the belt conveyor instantly when an accident happens.

Since the Pull Cord Switch is so designed that it should be installed at the side of belt conveyor and the pull cord should be mounted along conveyor, the switch can be actuated at any position. Pull Cord Switch is a switch that is mounted along a conveyor stringer and is manually actuated by a cord that runs the full length of the conveyor. The cord can then be pulled at any point on the conveyor as an emergency stop.

As these switches are used as safety or emergency switch, it is not operated very frequently therefore construction of these switches is such that it should be operated immediately though it kept idle for long time.

RRE Pull Cord Switch is housed in dust and weatherproof D.M.C (Dough Moldings Compound) enclosure having IP 65 grade of protection. Sturdy and heavy-duty CAM switch with robust contacts is used to give longer service life. Powder coated operating handle is fitted with spring steel rings at both ends for fixing the rope. Design of the rings gives maximum flexibility in operating condition. The switch is designed with manual reset type mechanism. Contacts are rated for 16 Amps at 440 Volts AC.

The Pull Cord Switch is mounted on the walkway side of the conveyor belt, preferably at about every 15 to 20 meters. Rope is tied to the end rings of the handle and is carried opposite to each other. When an accident occurs in the belt conveyor, the worker can stop the belt conveyor at any position with pulling the cord in order to drive the lever. The rotation put the torsion spring in motion to drive the CAM into the displacement. Then it drives the Limit Switch to cut down the control wiring. Thus, the belt conveyor can stop operation. Unless and until the handle is reset to normal position manually, the switch remains in operated condition.

All the Pull Cord Switches installed along an individual belt are electrically wired in series and connected to the control station by a two-core cable. Therefore, actuation of any one of these pull cord switches will stop the concerned conveyor until the particular switch is manually reset.