25
EN
05/2016
8.8 Notices for ex-magnetic switch
• The magnetic switch is acc. to RL 2014/34/EU annex I an instrument of the instrument group II
category 2G, which can be used acc. to RL 99/92/EC ( ATEX 137 ) in the zones 1 and 2 as well as in the
equipment groups IIA, IIB and IIC, which are explosion endangered by flammable substances in the area
of the temperature classes T1 to T6 resp. the listed values in the below-mentioned figures of the notices.
The requests acc. to EN 60079-14 have to be observed by the application.
• The magnetic switch is acc. to RL 2014/34/EU annex I an instrument of the instrument group II
category 2D, that can be used acc. to RL 99/92/EC ( ATEX 137 ) in the zones 21 and 22 of flammable
dusts. The requests acc. to EN 60079-1 and EN 60079-14 have to be observed by the application.
The magnetic switch resp. the components have to comply with the protection rating IP6*.
• The assignment between the temperature classes resp. the surface temperature and the maximum
ambient temperature has to be taken from the following table.
• If temperatures in excess of 70°C occur at the cable lead-in or above 80°C at the wire terminations, only a
verified heat-resistant cable for the relevant temperature may be connected.
• The magnetic switch ( type according to type key ) in the version with “explosion proof” protection rating
resp. “compound-filled encapsulation” is only for connection to an electric circuit with safe ( external )
delimitation of the electrical parameters to the given values.
• Magnetic switches with metal enclosures must be electrically bonded to the equipment‘s earth bonding
system.
• Equipment for use in hazardous locations is identified with a special rating plate containing all data
relevant to explosion protection.
Temperature classes /
Surface temperature
Ambient temperature
Ex ia llC
Ex tD A21 IP6*
Ex d llC
Ex tD A21 IP6*
Ex mb ll
Ex tD A21 IP6*
Basis
Option /N /R
Basis
Option /N /R
Basis
Option /N /R
T6
80°C
80°C
75°C
80°C
75°C
80°C
75°C
T5
95°C
95°C
90°C
95°C
90°C
95°C
90°C
T4
130°C
130°C
125°C
120°C
120°C
-
-
T3
190°C
190°C
185°C
-
-
-
-
T2
290°C
290°C
220°C
-
-
-
-
T1
300°C
300°C
-
-
-
-
-
Heinrich Kübler AG
Ruessenstrasse 4 | CH-6340 Baar | T41 (0)41 766 62 62 | Fax +41 (0)41 766 62 63 | E-Mail [email protected] | Internet www.kubler.ch
