Ex position switch with safety function

Ex 355 1K 1Ö/1S

Article no.: 1178444Old article no.: 92013301

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Product features

ExSafety

  • Ex zone 1 and 21

  • Metal enclosure with wiring compartment

  • Mounting and switching details to EN 50041

  • 3 cable entries

  • Actuator: Roller lever 1K

  • Actuation parallel to switch from right

  • Wear-resistant plastic roller

  • Actuator can be repositioned by 4 x 90°

Notes

  • Actuation from the left should be avoided since this reduces the mechanical life of the position switch.

Technical data

Applied standards
EN 60947-5-1, EN IEC 60079-0, EN 60079-1, EN IEC 60079-7, EN 60079-31, EN ISO 13849-1, EN ISO 14119
Enclosure
zinc die-cast, enamel finish
Switch type
type 1
Coding level
no coding
Degree of protection
IP67 (IEC/EN 60529)
B10d (10 % load)
2 million
TM
max. 20 years
Contact material
silver
Switching system
slow action, positive break NC contacts A
Switching elements
1 NC/1 NO contact, type Zb
Connection
screw connection terminals
Cable cross-section
max. 1.5 mm² (incl. conductor ferrules)
Cable entry
3 x M20 x 1.5 (incl. 1 cable gland)
Clamping range
7 … 12 mm
Rated impulse withstand voltage Uimp
4 kV
Rated insulation voltage Ui
250 V
Conventional thermal current Ithe
6 A
Rated operating current/voltage Ie/Ue
6 A/250 VAC; 0.25 A/230 VDC
Utilisation category
AC-15; DC-13
Short-circuit protection
6 A gG/gN fuse
Ambient temperature
T6: –20 °C … +40 °C;
T5: –20 °C … +60 °C
Mechanical life
> 1 million operations
Actuating speed
max. 0.5 m/s with a vertical actuating angle of 30°
Operation cycles
max. 1800/h
Repeat accuracy of switching points
± 0.1 mm
Contact opening
max. 2 x 3.5 mm
Impact energy
max. 7 J
Ex marking
L II 2G Ex db e IIC T6/T5 Gb,
L II 2D Ex tb IIIC T80 °C/T95 °C Db
IECEx Ex db e IIC T6/T5 Gb,
Ex tb IIIC T80 °C/T95 °C Db
Approvals
BVS 04 ATEX E 126
IECEx BVS 07.0013
Weight
450 g

Dimensional drawing

Further drawings

Contact diagram
Switching diagram

T Positive break travel/angle

Downloads

Mounting and wiring instructions – Ex 355

German, English, French, Italian, Portuguese, Russian

PDF2 MB 13.11.2025

Variants / Options

The following variants / options are available on request:

  • Gold-plated contacts

to your contact persons

Ex position switch with safety function

Ex 355 1K 1Ö/1S

Article no.: 1178444Old article no.: 92013301

contact us