Application

Range of application

Ex push-button switches series Ex 14 are mounted in switchboards, control panels, two-hand control panels and on machines. On manual actuation, the devices start or terminate operating sequences and functional processes.

There are versions as push buttons, selector, key-operated and emergency-stop switches. The emergency-stop devices are connected in the safety circuit of a machine or plant. They meet the requirements of EN 60204-1.

Design and operating principle

These Ex push-button switches series Ex 14 fit in Ø 22.5 mm mounting holes and are suitable for spacings of 30 mm between centres. They provide IP 65 degree of protection and are double insulated for class II. The actuator is connected by a bayonet fastener to the Ex 14 switch. Available switching elements with slow action are: emergency-stop push buttons, push buttons with and without diaphragm, selectors, control switches and key-operated switches.

The robust Ex push-button switches Ex BF 80 are suitable for on-wall mounting. These series are available in three enclosure sizes for one, two or three push-button switches. There are different push-button switches, signalling devices and key switches available. They meet the degree of protection IP 66.

All Ex push-button switches shown in this chapter bear the CE mark according to the Low Voltage Directive 2014/35/EU as well as to ATEX 2014/34/EU, and the emergency-stop push buttons according to the Machinery Directive 2006/42/EC as well as to ATEX 2014/34/EU. The Ex push-button switches per equipment category 3D bear the CE mark without the number of the notified body and have received a EU declaration of manufacturer conformity.

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As emergency-stop push-button in a switchboard