Ex pull-wire switch
Ex 97 WHK/90°
Ex zone 1 and 21
Version for door/gate opening:
including 3.2 m long nylon pull-wire and rubber ball, slow action 1 NC/1 NO contactHigh degree of protection IP66 / IP67 / IP69
Thermoplastic enclosure
Design to EN 50047
Wiring compartment
Double insulated X
1 Ex"e" cable gland M20x1.5 included in delivery
The rope is attached to the lever by a clip which releases the rope if overloaded.
Technical data
General technical data
Applied standards
EN 60947-5-1, EN IEC 60079-0, EN 60079-1, EN IEC 60079-7, EN 60079-31
Enclosure
thermoplastic, glass-fibre reinforced, impact resistant, self-extinguishing UL 94 V-0
Cover
thermoset, glass-fibre reinforced, impact resistant, self-extinguishing UL 94 V-0
Sealing
silicone
Tightening torque
cover screws: 0.4 … 0.45 Nm
Degree of protection
IP66 / IP67 (EN 60079-0 + IEC/EN 60529)
IP69 (IEC/EN 60529)
IP69K (ISO 20653)
Contact material
Silver, nickel-plated
Switching system
slow action, positive break NC contacts A
Switching elements
1 NC/1 NO contact
Connection
screw connection terminals
Cable cross-section
min. 0.75 mm² (AWG 18), max. 1.5 mm² (AWG 16), incl. conductor ferrules
Cable entry
M20 x 1.5; screwing depth max. 9 mm; use only Ex approved and certified cable glands with min. degree of protection IP66 and suitable for the specified ambient temperature range
Clamping range
7 … 12 mm
Utilisation category
AC-15
Rated operating current Ie
max. 6 A or 3 A X
Rated operating voltage Ue
max. 250 VAC
Degree of pollution
3
Mechanical life
250 000 operations
Impact energy
max. 7 J
Temperature class
T6
Ambient temperature
–20 °C … +45 °C max. 6 A,
–20 °C … +60 °C max. 3 A
Short-circuit protection
6 A / 3 A gG/gN fuse
Ex marking
L II 2G Ex db eb IIC T6 Gb,
L II 2D Ex tb IIIC T80 °C Db
IECEx Ex db eb IIC T6 Gb,
Ex tb IIIC T80 °C Db
Approvals
BVS 16 ATEX E 052
IECEx BVS 16.0052
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