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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• With pre-wired cable
• Non-contact principle
• 1 Reed contakts
• Long life
• 104 mm x 52 mm x 47 mm
• Aluminium enlosure
• Actuating distance up to 50 mm depending on actuating magnet and version
• Screw connection
• Highly resistant to vibration
• Available for actuation from front or side

Ordering details
Product type descriptionBN 20-01Z
Article number101172087
EAN Code4030661299983
Global Properties
Permanent lightBN 20
StandardsEN 60947-5-1
Compliance with the Directives (Y/N) Yes
suitable for elevators (Y/N)No
Active principleMagnetic drive
- Material of the housingsAluminium
- Material of the active surfaceMetal film
Housing construction formrectangular
Recommended actuator2 x BP 10, 2 x BP 15/2, BP 20, BP 31, BP 11, BP 12, BP 21 N, BE 20
Mechanical data
Design of electrical connectionScrew connection
Mechanical life1.000.000.000 operations
Electrical lifetime1.000.000 … operations
Switching frequencymax. 300/s
Actuating planesActuation from side
Active arealateral
Switch distance Sn12 mm … 45 mm
2 x BP 10 = 12 mm
2 x BP 15/2 = 12 mm
BP 20 = 15 mm
BP 31 = 15 mm
BP 11 = 15 mm
BP 12 = 25 mm
BP 21N = 20 ... 45 mm
BE 20 = 15 mm
- noticeActuating distance up to 45 mm depending on actuating magnet and version
Type of actuationMagnet
restistance to shock-
resistant to vibration50 g, on sine wave oscillation
Bounce duration0,3 ms … 0,6 ms
Latching (Y/N)No
bias magnet (Y/N)Yes
Actuating speedmax. 18 m/s
Switching point accuracy± 0,25 mm
Ambient conditions
Ambient temperature
- Min. environmental temperature−25 °C
- Max. environmental temperature+90 °C
Protection classIP67
Electrical data
Design of control elementOpener (NC)
Number of shutters0 piece
Number of openers1 piece
Switching time - Close-
Switching time - Openmax. 0,5 ms
Voltage typeVAC
Dielectric strength> 600 VAC (50 HZ)
Switching voltagemax. 250 VAC
Switching currentmax. 3 A
Switching capacitymax. 120 VA / W
Design of control outputReed contakts
LED switching conditions display
LED switching conditions display (Y/N)No
Explosion protection categories for gasesNone
Explosion protected category for dustsNone
Dimensions of the sensor
- Width of sensor104 mm
- Height of sensor52 mm
- Length of sensor47 mm
The opening and closing functions depend on the direction of actuation, the actuating magnets and the polarity of the actuating magnets.
When the switches and actuators come together, the colours must coincide: Red (S) to red (S) and green (N) to green (N).
Included in delivery
Actuators must be ordered separately.

Note Diagram
  positive break NC contact
  no active
  Normally-open contact
  Normally-closed contact

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 20.09.2019 - 05:01:33h Kasbase 3.3.0.F.64I