Ex ZS 73

  • Ex zone 1 and 21
  • Metal enclosure
  • 2 contacts
  • Wire length up to 130 m
  • 2 different spring force variants available
  • Release by push-button (VD)
  • Available without unlocking mechanism (to EN 60947-5-1)
  • Wire pull and breakage detection
  • Watertight collar W for protection against penetration of dirt available
  • Special version only for dust Ex zone 22 available
  • N.B.: Please state required international approvals with your order!

Technical data

Applied standardsEN 60947-5-1, -5; EN 60079-0,
EN 60079-1, EN 60079-31;
EN ISO 13850; EN ISO 13849-1
Enclosurealuminium die-cast, enamel finish
Coverglass-fibre reinforced, shock-proof thermoplastic, self-extinguishing UL 94 V-0
Switch insert1 x Ex 14
Degree of protectionIP 65 to IEC/EN 60529
Contact materialsilver
Switching systemslow action, positive break NC contacts
Switching elements1 NC/1 NO contact or 2 NC contacts, type Zb
Connectionpre-wired cable H05VV-F
Cable length3 m
Cable cross-section4 x 0.75 mm² (incl. conductor ferrules)
B10d (10 % load)200 000
TMmax. 20 years
Rated impulse withstand voltage Uimp4 kV
Rated operating isolation voltage Ui250 V
Conventional thermal current ItheT6: 6 A, T5: 3 A
Utilisation categoryAC-15; DC-13
Rated operating current/voltage Ie/Ue6 A/250 VAC; 0.25 A/230 VDC
Max. fuse rating6 A gG/gN fuse
Ambient temperatureT6: –20 °C … +65 °C,
T5: –20 °C … +75 °C, +90 °C with max. 3 A
Mechanical life> 100 000 operations
Max. wire length130 m
Impact energymax. 7 J
Ex marking II 2G Ex d IIC T6/T5 Gb,
II 2D Ex tb IIIC
T80 °C/T95 °C Db
IECEx Ex d IIC T6/T5 Gb,
Ex tb IIIC T80 °C/T95 °C Db
ApprovalsPTB 11 ATEX 1003 X
IECEx PTB 07.0034 X

Ordering details

Release by push button

Type   Material no.  
Type    Material no.   
Ex ZS 73 1Ö/1S VD / 295-390 N - 3m 1048127
Type    Material no.   
Ex ZS 73 1Ö/1S VD / 120-180 N - 3m 1177689
Type    Material no.   
Ex ZS 73 2Ö VD / 295-390 N - 3m 1182417
Type    Material no.   
Ex ZS 73 2Ö VD / 120-180 N - 3m 1182418
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.

Release by push button + watertight collar

Type   Material no.  
Type    Material no.   
Ex ZS 73 1Ö/1S WVD / 295-390 N - 3m 1048158
Type    Material no.   
Ex ZS 73 1Ö/1S WVD / 120-180 N - 3m 1183019
Type    Material no.   
Ex ZS 73 2Ö WVD / 295-390 N - 3m 1182048
Type    Material no.   
Ex ZS 73 2Ö WVD / 120-180 N - 3m 1180514
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.