Belt alignment switch

ZS 92 SR KST -40°C ... +70°C IP66/67 Extreme

  • Temperature resistant from -40 °C to +70 °C

  • High degree of protection IP66 / IP67

  • Thermoset enclosure

  • Screws and belt-alignment roller made of stainless steel

  • With staggered contacts, adjustable from 5° to 35°

  • Back and base mounting possible

Technical data

Applied standards

EN 60947-5-1


thermoset, grey, similar to RAL 7035


thermoset, enamel finish, yellow, similar to RAL 1012


stainless steel


stainless steel

Tightening torque

cover screws: max. 2.5 Nm

Degree of protection

IP66/IP67 (IEC/EN 60529)

B10d (10 % load)

2 million


max. 20 years

Safety class


Contact material


Switching elements

2 NC/2 NO contacts, type Zb

Switching system

snap action, type P: positive break NC contacts A

Switching points

adjustable 5° to 35°; pre-adjustment setting 2 x 10°


screw connection terminals

Cable cross-section

0.5 ... 2.5 mm² (incl. conductor ferrules)

Cable entry

2 x M25 x 1.5

Rated impulse withstand voltage Uimp

4 kV

Rated insulation voltage Ui

400 V

Conventional thermal current Ithe

4 A

Conditional short-circuit current

1100 A

Utilisation category

AC-15; DC-13

Rated operating current/voltage Ie/Ue

4 A/400 VAC; 0.25 A/250 VDC; 0.55 A/125 VDC; 2.5 A/48 VDC; 3 A/24 VDC

Short-circuit protection

4 A gG/gN fuse

Mechanical life

> 1 000 000 operations at max. 45° operating angle

Admissible belt speed

7 m/s for 3 h with a force of 50 N

Operation cycles

max. 600/h

Ambient temperature

–40 °C … +70 °C

Degree of pollution


Indicator lamp 

as option




Mounting and wiring instructions – ZS 92 SR KST Extreme

German, English, French, Italian, Portuguese

PDF 4 MB 24.01.2024
Mounting and wiring instructions – Indicator lamp

German, English, French, Italian, Portuguese

PDF 1 MB 03.11.2023
Please go to the relevant product pages for additional downloads.

Variants / Options

The following variants / options are available on request:

  • Pressure equalization element
to your contact persons

Other interesting products

Alternative version with explosion protection


Version with corrosion-resistant aluminium die-cast enclosure