The TER C55579800C3 is a cable pull switch, also called a rope pull or pull cord switch, used to stop machinery from any point along its length. A steel rope runs beside a conveyor or production line and connects to the switch at one end. Pull the rope anywhere along that run and the switch trips, which is why it is the standard safety device where a single emergency stop button on a panel would be too far from where a person actually works.

Manual reset is what makes it safe rather than just convenient. Once tripped, the switch stays tripped. Somebody has to walk to the unit and physically reset it, so the line cannot restart on its own after the rope is released. That forced check is required by most conveyor safety standards.

The contacts are 1NO and 2NC with slow action break before make. Slow action means the contacts move with the mechanism rather than snapping over, giving reliable positive opening on the NC pairs. Two NC contacts allow dual channel wiring into a safety relay, and the NO contact is free for signalling to a PLC or alarm. Rated AC15 400V 4A, it switches contactor coils directly.

The body is metal rather than plastic, sealed to IP66 against dust and heavy water jets, with three M20 cable entries so wiring can come in from whichever side the installation needs. Made in Italy by TER.

Key Features

Stops machinery from any point along the rope run
Manual reset prevents automatic restart after a trip
1NO and 2NC slow action break before make contacts
Two NC contacts support dual channel safety wiring
AC15 400V 4A rating switches contactor coils directly
IP66 sealed metal body for dust and heavy water jets
Three M20 cable entries for flexible wiring routes
Compact 55mm width, manufactured in Italy by TER

Technical Specifications

Specification	Detail
Product Type	Cable Pull Limit Switch
Model	C55579800C3
Reset Method	Manual Reset
Contact Rating	AC15 400V 4A
Contact Connection	1NO and 2NC, Slow Action Break Before Make
Degree of Protection	IP66
Gland Size	M20 x 3
Number of Cable Entries	3
Body Material	Metal
Width	55mm
Brand	TER
Country of Origin	Italy

Common Applications

Belt conveyor emergency stop lines in quarries, cement plants and material handling, packaging and bottling line safety runs, baggage handling systems, grain and feed processing plant, mining and aggregate conveyors, long machine guarding runs where a panel mounted stop button would be out of reach, and any installation where an operator must be able to stop the line from wherever they are standing.

Choosing the Right Stop and Limit Switch

A cable pull switch protects a length of machinery. Where you only need to detect a fixed position instead, a standard limit switch is the correct and far cheaper device. For heavy outdoor plant, the big wheel limit switch AZ-5108L and the ball limit switch AZ-5109 both carry IP67 sealing at 10A.

For lighter machine duty, the lever limit switch AZ-7120 is a compact side mount unit, the roller plunger limit switch AM-1308 handles 15A from a top roller, and the spring limit switch AZ-8166 flexes rather than breaking when a load overruns.

Panel mounted safety controls work alongside a rope pull line rather than replacing it, so most installations also need an emergency stop at the control station. Browse the full 10A limit switch and pull cord switch range or the wider limit and micro switches category, which also covers foot switches.

Why Buy From Qahraba

Qahraba supplies electrical contractors, panel builders and machine builders across the UAE and worldwide. Every cable pull switch we stock is genuine TER product made in Italy. Local UAE orders ship within 1 to 2 working days, free above AED 250, or collect free from our Dubai store. Call or WhatsApp +971 52 913 9543 for rope, tensioners and eye bolts to complete the installation.

FAQ,s

What is a cable pull switch?

It is a safety switch connected to a steel rope that runs alongside a machine or conveyor. Pulling the rope anywhere along its length trips the switch and stops the equipment, so an operator does not have to reach a fixed stop button.

Why does it need a manual reset?

So the machine cannot restart by itself when the rope is released. Someone has to go to the unit, check the area and reset it deliberately, which is what most conveyor safety standards require.

What does slow action break before make mean?

The contacts move with the mechanism rather than snapping over, and the normally closed pair opens fully before the normally open pair closes. This gives reliable positive opening on the safety contacts.

How long a rope can one switch cover?

Rope length depends on the model, the tension and whether pulley supports are used along the run. Contact us with your conveyor length and we will confirm the correct arrangement and accessories.

What does IP66 mean here?

IP66 means the metal body is fully dust tight and withstands powerful water jets, which suits outdoor conveyors, quarries, washdown areas and dusty processing plant.

Do I still need an emergency stop button on the panel?

Usually yes. The rope line protects the length of the machine, while a panel emergency stop covers the operator station itself.

Cable Pull Switch with Reset 1NO 2NC IP66 C55579800C3 TER