Machinery safety and explosion protection are two fields placing extremely high requirements on industrial switchgear. The new position switches of the EX-T 335 series meet these requirements and therefore are suitable for the position monitoring of safety guards in explosive atmospheres.
The basis series Z/T 335 is a state-of the art position switch in many fields of mechanical engineering, where it is used for safety-related applications and also for conventional position tasks when an extremely long lifetime is required. The series now has been made compliant with the requirements of explosion protection, as a result of which it is certified to the ATEX Directive for applications in the gas Ex Zones 1 and 2 as well as the dust Ex Zones 21 and 22 (equipment category 2 GD). These components also feature an extraordinary long life and high load-bearing capacity: their mechanical lifetime is approximately more than one million of operations.
The position switches of the EX-T 335 series have extremely compact mounting sizes to EN 50041. The metal enclosure also withstands high mechanical stresses. The switches are offered with the conventional contact variants 1 NO / 1 NC and 2 NC as well as with overlapping and staggered contacts.
As the actuators are regarded, the user has a large freedom of choice; the options include, amongst other things, plungers, roller plungers, roller and rod levers as well as angle roller levers. As all actuators can be mounted in 90o steps, i.e. in four actuating directions, the EX-T 335 is an excellent universally applicable complement to the continuously growing Schmersal programme of switchgear for explosive atmospheres.
