Ex ZS 90 SR

  • Ex zone 1 and 21
  • Thermoplastic enclosure
  • 2 or 4 contacts
  • With contact staggering
  • With latching and release by lever possible
  • Belt-alignment lever continuously adjustable
  • N.B.: Please state required international approvals with your order!

Technical data

Applied standardsEN 60947-5-1; EN 60079-0,
EN 60079-1, EN 60079-31;
EN ISO 13849-1
Enclosurethermoset, UV resistant
to EN ISO 4892
Coverthermoset, UV resistant
to EN ISO 4892
Switch insert2 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/2 NO contacts, type Zb
Connectionpre-wired cable H05VV-F
Cable length3 m
B10d (10 % load)Ex ZS 90 SR VD: 200 000,
Ex ZS 90 SR: 2 million
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 lifeEx ZS 90 SR VD:
> 100 000 operations,
Ex ZS 90 SR:
> 1 million operations
Impact energymax. 7 J
Ex marking II 2G Ex db IIC T6/T5 Gb,
II 2D Ex tb IIIC
T80 °C/T95 °C Db
IECEx Ex db IIC T6/T5 Gb,
Ex tb IIIC T80 °C/T95 °C Db
ApprovalsPTB 03 ATEX 1070 X*
IECEx PTB 06.0098X*
*referring to the switch insert

Ordering details

Slow action

1 NC/1 NO contact

Type   Material no.  
Type    Material no.   
Ex ZS 90 SR 1S/1Ö - 3m 1185567
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.

Slow action

2 NC/2 NO contacts

Type   Material no.  
Type    Material no.   
Ex ZS 90 SR 1ÖS/1ÖS VD - 3m 1185386
Type    Material no.   
Ex ZS 90 SR 1ÖS/1ÖS - 3m stock type Standard versions, in stock or available at short notice 1184969
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.