Notes Switch travel diagram
  Contact closed
  Contact open
  Setting range
  Break point
  Positive opening sequence/- angle
VS  adjustable range of NO contact
  adjustable range of NC contact
N   after travel
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NOTICE: Not available!
• Metal enclosure
• Long life
• Multiple coding
• 66,7 mm x 114 mm x 38 mm
• Actuator heads can be repositioned in steps 4 x 90°
• Can be mounted on a flat surface
• High level of contact reliability with low voltages and currents
• Slotted holes for adjustment, circular holes for location
• 3 cable entries M 20 x 1.5
• LED version available

Ordering details
NOTICE: Not available!
Product type descriptionAZ 355-11ZRK - Ordering suffix
Article numberAZ 355-11ZRK
EAN Code

StandardsEN ISO 13849-1
B10d Normally-closed contact (NC)2.000.000
B10d Normally open contact (NO)1.000.000
- noticeat 10% Ie and ohmic load
Mission time20 Years
Global Properties
Permanent lightAZ 355
StandardsEN 60947-5-1, BG-GS-ET-15
- Material of the housingsAluminium
- Material of the contactsSilver
Housing coatingpainted
Mechanical data
Design of electrical connectionScrew connection
Cable section
- Min. Cable section0,75
- Max. Cable section2.5
Mechanical life10.000.000 operations
noticeAll indications about the cable section are including the conductor ferrules.
higher Latching force (Y/N)Yes
Latching force30
Positive break force5 N for each NC contact fitted
positive break travel10.7 mm
Ambient conditions
Ambient temperature
- Min. environmental temperature−25 °C
- Max. environmental temperature+65 °C
Protection classIP67 to IEC/EN 60529
Electrical data
Design of control elementNormally open contact (NO), Opener (NC)
Switching principleCreep circuit element
Number of auxiliary contacts1
Number of safety contacts1
Rated impulse withstand voltage6
Rated insulation voltage500
Thermal test current Ithe10 A
Utilisation categoryAC-15: 230 V / 4 A,
DC-13: 24 V / 4 A
Max. fuse rating6 A gG D-fuse
Explosion protection categories for gasesNone
Explosion protected category for dustsNone
Dimensions of the sensor
- Width of sensor66.7 mm
- Height of sensor114 mm
- Length of sensor38 mm
By turning the head in 90° steps, 8 actuating planes are possible. A Torx T10 screwdriver is needed for this purpose.
Even when the screw is removed, the head is self-retaining. The switch can still not be tampered.
Included in delivery
Actuators must be ordered separately.
Switch travel diagram

Notes Switch travel diagram
  Contact closed
  Contact open
  Setting range
  Break point
  Positive opening sequence/- angle
VS  adjustable range of NO contact
  adjustable range of NC contact
N   after travel
Ordering suffix
The applicable ordering suffix is added at the end of the part number of the safety switch.
Order example: AZ 355-11ZRK-1637
...-1637 0,3 µm gold-plated contacts

...-ST M12 connector with A-coding
Rated impulse withstand voltage Uimp: 0,8 kV
Rated insulation voltage Ui: 50 V
Rated operating current/voltage Ie/Ue: 50 V / 4 A
Caution! The versions with connector may only be used in PELV circuits to EN 60204-1.

...-NPT Cable entry NPT 1/2“

...-G24 only available for version with one NO and one NC contact.
Protected against incorrect polarity and voltage spikes.

K.A. Schmersal GmbH & Co. KG, Möddinghofe 30, D-42279 Wuppertal
The data and values have been checked throroughly. Technical modifications and errors excepted.
Generiert am 18.02.2020 - 10:37:38h Kasbase 3.3.0.F.64I