Ex emergency pull-wire switch
Ex ZS 71 WVD
Technical data
Standards
EN 60947-5-1, -5; EN 60079-0,
EN 60079-1, EN 60079-31;
EN ISO 13850; EN ISO 13849-1
Enclosure
aluminium die-cast, enamel finish
Cover
glass-fibre reinforced, shock-proof thermoplastic, ultramid
Switch insert
Ex 14
Degree of protection
IP 65 to IEC/EN 60529
Contact material
silver
Switching system
slow action, positive break NC contacts
Switching elements
change-over contact with double break or 2 NC contacts
Connection
cable H05VV-F, length 3 m
Cable cross-section
4 x 0.75 mm² (incl. conductor ferrules)
B10d (10 % Load)
200 000
TM
max. 20 years
Uimp
4 kV
Ui
250 V
Ithe
T6: 6 A, T5: 3 A
Utilisation category
AC-15; DC-13
Ie/Ue
6 A/250 VAC; 0.25 A/230 VDC
Max. fuse rating
6 A gG/gN fuse
Ambient temperature
T6: –20 °C … +65 °C,
T5: –20 °C … +90 °C
Mechanical life
> 100 000 operations
Max. wire length
35 m
Features
wire pull and breakage detection
Ex marking
II 2G Ex d IIC T6/T5 Gb,
II 2D Ex tb IIIC
T80 °C/T95 °C Db IP65
IECEx Ex d IIC T6/T5 Gb,
Ex tb IIIC T80 °C/T95 °C Db IP65
Approvals
PTB 11 ATEX 1003 X
IECEx PTB 07.0034 X
Features/Options
• Ex zone 1 and 21
• Metal enclosure
• 2 contacts
• Small design
• Wire length up to 35 m
• Release by push-button (VD)
• Available without unlocking mechanism (per EN 60947-5-1)
• Wire pull and breakage detection
• Watertight collar W for protection against penetration of dirt available
• Position indicator A available
• Special version only for dust Ex zone 22 available
• N.B.: Please state required approvals for Russia, China, Brazil and North America with your order!