Ex T 356

Features/Options

  • Ex zone 1 and 21
  • Thermoplastic enclosure with metal cover
  • Mounting and switching details to EN 50041
  • With pre-wired cable
  • Actuator can be repositioned by 4 x 90°
  • Rocking lever can be repositioned by 10° steps
  • Special version only for dust Ex zone 22 available
  • N.B.: Please state required approvals for Russia, China, Brazil and North America with your order!

Technical data

StandardsEN 60947-5-1; EN 60079-0,
EN 60079-1, EN 60079-31;
EN ISO 13849-1; EN ISO 14119
Enclosureglass-fibre reinforced, shock-proof thermoplastic (PA 66), self-extinguishing UL 94-V0
Switch typetype 1
Coding levelno coding
Coversteel, enamel finish
Switch insertEx 13
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 length2 or 5 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
Ambient temperatureT6: –20 °C … +65 °C,
T5: –20 °C … +75 °C, +90 °C with max. 3 A
Mechanical life> 1 million operations
Operation cycles1800/h
Repeat accuracy of switching points± 0.1 mm
Contact openingmax. 2 x 4.5 mm
Impact energymax. 7 J
Ex marking II 2G Ex d IIC T6/T5 Gb,
II 2D Ex tb IIIC
T80 °C/T95 °C Db IP65
IECEx Ex d IIC T6/T5 Gb,
Ex tb IIIC T80 °C/T95 °C Db IP65
ApprovalsPTB 03 ATEX 1068 X*
IECEx PTB 06.0053X*


*referring to the switch insert
Ordering details
Type code

Plunger S


* with safety function

Type   Material no.
Ex T 356 S 1Ö/1S-2m  * 1172992
Ex T 356 S 1Ö/1S-5m  * 1173212

Roller plunger R


* with safety function

Type   Material no.
Ex T 356 R 1Ö/1S-2m  * 1173048
Ex T 356 R 1Ö/1S-5m  * 1174034

Rocking lever 4VH


* with safety function

Type   Material no.
Ex T 356 4VH 1Ö/1S-2m  * 1173059
Ex T 356 4VH 1Ö/1S-5m  * 1173060

Adjustable rocking lever 4V7H-2138


* with safety function

Type   Material no.
Ex T 356 4V7H 1Ö/1S-2138-2m  * 1179068
Ex T 356 4V7H 1Ö/1S-2138-5m  * 1179361

Adjustable rocking lever 4V7H

Type   Material no.
Ex T 356 4V7H 1Ö/1S-2m 1173062
Ex T 356 4V7H 1Ö/1S-5m 1173695

Rod lever 4V10H

Type   Material no.
Ex T 356 4V10H 1Ö/1S-2m 1175269
Ex T 356 4V10H 1Ö/1S-5m 1175865