Ex ZS 73

  • Ex zone 1 and 21
  • Metal enclosure
  • 2 contacts
  • Wire length up to 130 m
  • 2 different spring force variants available
  • Wire pull and breakage detection
  • Watertight collar W for protection against penetration of dirt available
  • Special version only for dust Ex zone 22 available
  • Attention: Please state required international approvals with your order!

Technical data

Applied standards EN 60947-5-1, EN 60947-5-5, EN 60079-0, EN 60079-1, EN 60079-31, EN ISO 13850, EN ISO 13849-1
Enclosure aluminium die-cast, enamel finish
Cover thermoplastic, glass-fibre reinforced, impact resistant, self-extinguishing UL 94 V-0
Degree of protection IP 65 to IEC/EN 60529
B10d (10 % load) 2 million
TM max. 20 years
Switch insert 1 x Ex 14
Contact material silver
Switching system slow action, positive break NC contacts
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 operating isolation voltage Ui 250 V
Conventional thermal current Ithe T6: 6 A, T5: 3 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 T6: –20 °C … +65 °C,
T5: –20 °C … +75 °C, +90 °C with max. 3 A
Mechanical life > 1 million operations
Max. wire length 130 m
Impact energy max. 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
Approvals PTB 11 ATEX 1003 X
IECEx PTB 07.0034 X

Ordering details

Without watertight collar

Type   Material no.  
Type    Material no.   
Ex ZS 73 1Ö/1S / 295-390 N - 3m 1048125
Type    Material no.   
Ex ZS 73 1Ö/1S / 120-180 N - 3m 1446391
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.

With watertight collar

Type   Material no.  
Type    Material no.   
Ex ZS 73 1Ö/1S W / 295-390 N - 3m 1048157
Type    Material no.   
Ex ZS 73 1Ö/1S W / 120-180 N - 3m 1048180
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.