Ex ZS 71

Features/Options

  • Ex zone 1 and 21
  • 2 contacts
  • Small design
  • Wire length up to 35 m
  • Release by push button (VD)
  • Available without unlocking mechanism (per DIN 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
  • N.B.: Please state required approvals for Russia, China, Brazil and North America with your order!

Product image

 

Technical data

Standards EN 60947-5-1, -5; EN 60079-0,
EN 60079-1, EN 60079-31;
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 Zwangsöffnung
Switching elements change-over contact with
double break or 2 NC contacts
Connection cable H05VV-F,
length 3m
Cable section 4 x 0.75 mm2
(incl. conductor ferrules)
B10d (10% Load) Ex ZS 71: 2 million
Ex ZS 71 VD/VS: 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 gL/gG D-fuse
Ambient temperature T6: –20 °C … +65 ºC,
T5: –20 °C … +90 ºC
Mechanical life > 1 million operations
Max. wire length 35 m
Features wire pull and breakage detection
Ex certification EEx geprüft II 2G Ex d IIC T6/T5 Gb,
EEx geprüft 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