Product Description

Coel Motori

LimiteX Position

Explosion Proof Position Limit Switch


Engineered for controlling the precise movement of overhead travelling cranes, hoists, and intricate machine tools in potentially explosive environments.

  • Safety functions ensured through the use of NC contacts with positive opening capability.
  • Switches designed for 1 million mechanical operations.
  • Maximum operation frequency of 3600 operations per hour.
  • IP66 rating provides a high level of protection.
  • Suitable for use in ambient temperatures ranging from -40°C to +60°C.
  • Durable exterior enclosure constructed from G20 cast iron and supported by a cross rod made of zinc alloy.
  • Internal components engineered with materials that ensure prolonged mechanical lifespan and consistent performance.
  • Option to choose a full body stainless steel version for added versatility


The Limitex position limit switch is a durable and dependable device specifically created to regulate the motion of overhead travelling cranes, hoists, and industrial machine tools within hazardous environments. It is designed to operate in areas where there is a risk of explosive atmospheres, characterized by a combination of air and potentially combustible gases, vapors, fumes, or powders that can swiftly propagate combustion (resulting in an explosion) when ignited at atmospheric pressure. Serving as an auxiliary controller for electrical motors, the position limit switch seamlessly interfaces with power interfaces such as contactors or programmable logic controllers (PLCs). Its robust construction ensures reliable performance even in demanding industrial settings.


  • The cross rods have the capability to be positioned and maintained at either three or four different positions.
  • The position limit switches are equipped with either 1NO+1NC snap action switches or, if requested, 1NC slow action switches.
  • All switches possess positive opening operation, making them suitable for safety functions.
  • The limit switch is accompanied by a modular adapter that includes fixing points for easy installation.


  • The limit switches feature a robust exterior enclosure crafted from G20 cast iron, providing excellent durability.
  • This enclosure offers reliable protection against water and dust infiltration.
  • The cross rod support is specifically constructed using a resilient zinc alloy.
  • Internally, high-quality materials are utilized to ensure an extended mechanical lifespan and consistent performance of the components.


  • 2 or 4 snap action switches with 1NO+1NC change-over contacts.
  • Cross rods move to 3 or 4 maintained positions, with movement every 90°.
  • Modular adapter with fixing points.


Operation frequency

3600 operations/hour max

Cable entry

Nr. 1 M20x1,5 - Nr. 1 M25x1,5 - Nr. 1 ½ NPT (cable glands not supplied)

Maximum power supply

250 Vac

Maximum current intensity

3 A

Maximum dissipated power

2 Watt

Rated frequency

50 / 60 Hz



I M2 Ex d I Mb (ATEX) Ex d I Mb (IECEx)


Zone 1 and 2: II2G Ex d IIB T6 Gb or Ex d IIC T6 Gb (ATEX) Ex d IIB T6 or Ex d IIC T6 Gb (IECEx)


Zone 21 and 22: II2D Ex tb IIIC T85°C Db IP66 (ATEX) Ex tb IIC T85°C Db IP66 (IECEx)

Gas & Dust

II2GD Ex d IIB or IIC T6 Gb Ex tb IIC T85°C Db IP66


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