Ex ST 61

Features/Options

  • Ex zone 1 and 21
  • Metal enclosure
  • Double insulated
  • With pre-wired cable
  • Long life
  • High level of contact reliability with low voltages and currents
  • Special version only for dust Ex zone 22 available
  • N.B.: Please state required approvals for Russia, Brazil and North America with your order!
Note
  • The actuator is not included in the delivery of the switches

Technical data

StandardsEN 60947-5-1; EN 60079-0,
EN 60079-1, EN 60079-31;
EN ISO 13849-1; EN ISO 14119
Enclosurealuminium die-cast, powder-coated
Switch typetype 2
Coding levellow coding
Actuatorstainless steel 1.4301
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, type Zb
Connectioncable H05VV-F, 4 x 0.75 mm²
Cable length3 m
B10d (10 % Load)2 million
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
Positive break travel12 mm
Ambient temperatureT6: –20 °C … +65 °C,
T5: –20 °C … +75 °C, +90 °C with max. 3 A
Mechanical life> 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
Type code

Slow action

1 NC/1 NO contact

Type   Material no.
Ex ST 61 1Ö/1S - 3m 1047851
Actuators
Type   Material no.
Straight actuator ST 61-B1 1032911
Type   Material no.
Angled actuator ST 61-B5 1032913