Ex ZS 73

Features/Options

  • Ex zone 1 and 21
  • Metal enclosure
  • 2 contacts
  • Wire length up to 130 m
  • 2 different spring force variants (actuating forces) 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
  • N.B.: Please state required international approvals with your order!

Technical data

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 (PA 66), self-extinguishing UL 94-V0
Switch insertEx 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
Connectioncable H05VV-F, length 3 m
Cable cross-section4 x 0.75 mm² (incl. conductor ferrules)
B10d (10 % Load)2 million
TMmax. 20 years
Uimp4 kV
Ui250 V
ItheT6: 6 A, T5: 3 A
Utilisation categoryAC-15; DC-13
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> 1 million operations
Max. wire length130 m
Featureswire pull and breakage detection
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

on request
Ordering details
Type   Material no.
Ex ZS 73 1Ö/1S / 295-390 N - 3m 1048125
Ex ZS 73 1Ö/1S / 120-180 N - 3m on request Produced to order.
Ex ZS 73 2Ö / 295-390 N - 3m on request Produced to order.
Ex ZS 73 2Ö / 120-180 N - 3m on request Produced to order.

Watertight collar

Type   Material no.
Ex ZS 73 1Ö/1S W / 295-390 N - 3m 1048157
Ex ZS 73 1Ö/1S W / 120-180 N - 3m 1048180
Ex ZS 73 2Ö W / 295-390 N - 3m on request Produced to order.
Ex ZS 73 2Ö W / 120-180 N - 3m on request Produced to order.