Ex ZS 73 SR

  • Ex zone 1 and 21
  • Metal enclosure
  • 2 contacts
  • Cable
  • With latching and release by push-button possible
  • Belt-alignment roller made of stainless steel
  • 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 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
Connectionpre-wired cable H05VV-F
Cable cross-section4 x 0.75 mm² (incl. conductor ferrules)
Cable length3 m
B10d (10 % Load)Ex ZS 73 SR: 2 million
Ex ZS 73 SR VD: 200 000
TMmax. 20 years
Uimp4 kV
Ui250 V
ItheT6: 6 A, T5: 3 A
Ie/Ue6 A/250 VAC; 0.25 A/230 VDC
Utilisation categoryAC-15; DC-13
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 lifeEx ZS 73 SR: > 1 million operations;
Ex ZS 73 SR VD: > 100 000 operations
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

Type   Material no.  
Type    Material no.   
Ex ZS 73 SR 1Ö/1S - 3m 1181801
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.
Type    Material no.   
Ex ZS 73 SR 2Ö - 3m 1186753
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.
Type    Material no.   
Ex ZS 73 SR 1Ö/1S - 3m - mid-position centered 1186488
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.
Type    Material no.   
Ex ZS 73 SR 1S/1Ö UE - 3m - mid-position centered stock type Standard versions, in stock or available at short notice 1289270
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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

Type   Material no.  
Type    Material no.   
Ex ZS 73 SR 1Ö/1S VD - 3m 1179466
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.
Type    Material no.   
Ex ZS 73 SR 2Ö VD - 3m on request Produced to order.
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.