Ex emergency pull-wire switch
Ex ZS 71-3D
Ex zone 22
Metal enclosure
2 contacts
Wire length up to 35 m
2 different spring force variants available
Compact design
Release by push button (VD)
Wire pull and breakage detection
Watertight collar W for protection against penetration of dirt
Attention: Please state required international approvals with your order!
At 3 m distance intermediate wire supports are required. One wire thimble is provided.
Technical data
General technical data
Applied standards
EN 60947-5-1, EN 60947-5-5, EN IEC 60079-0, EN 60079-31, EN ISO 13850, EN ISO 13849-1
Enclosure
aluminium die-cast, powder-coated
Cover
thermoplastic, glass-fibre reinforced, shockproof, self-extinguishing UL 94 V-0
Degree of protection
IP67 (IEC/EN 60529)
B10d (10 % load)
200 000
TM
max. 20 years
Switch insert
1 x Ex 14
Contact material
silver
Switching system
slow action, positive break NC contacts A
Switching elements
1 NC/1 NO contact or 2 NC contacts, type Zb
Connection
pre-wired cable H05VV-F
Cable length
3 m
Cable cross-section
4 x 0.75 mm² (incl. conductor ferrules)
Rated impulse withstand voltage Uimp
4 kV
Rated insulation voltage Ui
250 V
Conventional thermal current Ithe
6 A
Utilisation category
AC-15; DC-13
Rated operating current/voltage Ie/Ue
6 A/250 VAC, 0.25 A/230 VDC
Short-circuit protection
6 A gG/gN fuse
Ambient temperature
–20 °C … +65 °C
Mechanical life
> 100 000 operations
Max. wire length
35 m
Impact energy
max. 7 J
Ex marking
L II 3D Ex tc IIIC T80°C Dc
