Catalogue (6.8 MB)

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Explosion-proof Cross Limit Switch AlphaX

ATEX and IECEx approval for hazardous areas
  • ATEX Standards: EN 60079-0:2009, EN 60079-1:2007, EN 60079-31:2009
  • IECEx Standards: IEC 60079-0:2011, IEC 60079-1:2007-04, IEC 60079-31:2008
  • INERIS Certificate: 13ATEX0020X
  • IECEx Certificate: INE 13.0051X
  • Mining Class: I M2 d I Mb (ATEX), Ex d I Mb (IECEx)
  • Gas and Dust Classes: II2GD Ex d IIB or IIC T6 Gb Ex tb IIC T85°C Db IP66
Opterating Temperature-40°C to+60°C
Protection DegreeIP 66
Housing MaterialG20 Cast Iron
Mechanical Lifetime1 miollion operations
Rating Voltage250VAC
Rating Current3A

The explosion-proof cross limit switch AlphaX is designed to control movement of overhead travelling cranes, hoists and complex machine tools operating in potentially explosive areas.


An explosive atmosphere is a mixture of air and gases, vapors, fumes or combustible powders, where combustion quickly propagates (explosion) after ignition at atmospheric pressure. 


The position limit switch operates as an auxiliary controller of electrical motors through a power interface, such as a contactor or PLC. 


The housing has enough space for 2 or 4 slow-action switches. The contacts are 1NO+1NC potential-free contacts. All NC contacts are positive opening contacts for safety functions. The cover is equipped with non-loosable screws only.


The cross limit switch AlphaX offers many different switching configurations. The cross rods may move to 3 or 4 maintained positions or can be used as multiturn limit switch without end position. Beside a simple version for stop-function in 2 directions we can offer also a slow-down and stop-function in 2 directions and several multiturn configurations with different switching functions. 


Of course we are able to realize also special switching configurations according to your requirements.


The special cast iron housing and zinc alloy cross rods garantee a long lifetime and a protection degree of IP66. The cross limit switch AlphaX is approved for the Gas Zone 1 and to as well as the Dust Zones 21 and 22.


The ATEX- and IECEx-approved cross limit switch AlphaX can be used with a maximum of 3 meters per seconds travelling speed. 


The cross limit switch can also be supplied as full-body stainless steel version on request. 


We would be glad to create your individual cross limit switch in the desired configuration together with you. Please contact us by phone, e-mail or directly via our chat at the bottom right of this page. We are looking forward to your inquiry.