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Euchner EUCHNER CET4-AR-CRA-CH-50X-SG-111684





We are EUCHNER CET4-AR-CRA-CH-50X-SG-111684 product supplier in India

ORDER NO. 111684

Order number111684
Item designationCET4-AR-CRA-CH-50X-SG-111684
Gross weight1,267kg
Customs tariff number85365019

Non-contact safety switch CET-AR-…, M12

  • Safety switch with guard locking and integrated evaluation electronics
  • Locking force up to 6,500 N
  • Up to 20 switches in series
  • Short circuit monitoring
  • 2 safety outputs (semiconductor outputs)
  • Category 4 / PL e according to EN ISO 13849-1
  • With 2 plug connectors M12
  • Multicode
  • Door monitoring output
  • Indication of the door position by LED
  • Approach direction A (delivery state)

Approach direction


Can be adjusted in 90° steps

Safety switch

The device may be operated only in conjunction with the actuator CET-A-….

Important: The actuator must be ordered separately.

Multicode evaluation unit

Every suitable actuator is detected by the switch.

Solenoid operating voltage

  • DC 24 V +10%, -15%

Guard locking type

CET4Open-circuit current principle, guard locking by solenoid force. Activation of guard locking by applying voltage to the guard locking solenoid. The door position is also monitored. The door monitoring output OUT D is set to HIGH as soon as the actuator is above the extended plunger (state: door closed, guard locking not active). OUT output D also remains set when guard locking is active.

LED function display

State LEDStatus LED
DIA LEDDiagnostics LED
LED 1 rdfreely configurable
LED 2 gnilluminates when door is closed

Additional connections

OUTMonitoring output (semiconductor)
OUT DDoor monitoring output
RSTReset input

Category according to EN ISO 13849-1

Due to two redundantly designed semiconductor outputs (safety outputs) with internal monitoring suitable for:

  • Category 4 / PL e according to EN ISO 13849-1
  • The stated safety characteristics apply to any installation orientations of the safety switch.

Important: To achieve the stated category in accordance with EN ISO 13849-1, both safety outputs (OA and OB) must be evaluated.

Work area

Repeat accuracy R
according to EN 60947-5-210 %

Electrical connection ratings

Power consumption
Solenoid11 W
Connecting cable30V DC, 2A 
Current consumption
IB80 mA
ICM450 mA
external (solenoid operating voltage UCM)0.5 … 8 A
external (operating voltage UB)0.25 … 8 A
Operating voltage DC
UB24 V DC -15% … +15% reverse polarity protected, regulated, residual ripple < 5%, PELV
LED24 V DC -15% V DC … +10% V DC
EMC protection requirementsaccording to EN IEC 60947-5-3
Utilization category
DC-1324V 200mA 
Solenoid operating voltage DC
UCM24 V DC -15% … +10% reverse polarity protected, regulated, residual ripple < 5%, PELV
Solenoid duty cycle100 %
Switching load
according to UL24V DC, Class 2 
Safety class
Test pulsesmax. 1 ms 
Degree of contamination (external, according to EN 60947-1)3
Monitoring output OUT D
Output typep-switching, short circuit-proof
Output voltage
Switching current
OUT D1 … 50 mA
Switching delay from state changemax. 700 ms
Monitoring output OUT
Output typep-switching, short circuit-proof
Output voltage
Switching current
OUT1 … 50 mA
Switching delay from state changemax. 400 ms
Safety outputs OA / OB
Output type2 semiconductor outputs, p-switching, short circuit-proof
Discrepancy time
both safety outputsmax. 10 ms
Output voltage
LOW U(OA,OB)0 … 1 V DC
Turn-on time400 ms
Switching current
per safety output OA / OB1 … 200 mA
Off-state current Irmax. 0.25 mA
Risk time according to EN 60947-5-3
Single devicemax. 400 ms
Risk time according to EN 60947-5-3, extension for each additional devicemax. 5 ms

Mechanical values and environment

Approach speedmax. 20 m/min
Connection2 plug connectors M12, 5- and 8-pin
Degree of protectionIP67 
Ready delay10 s
Safety switch housingDie-cast aluminum
Rampstainless steel
Mechanical life2 x 10⁶
Installation orientationany 
Switching frequencymax. 0.5 Hz
Degree of freedom X±5 mm
Degree of freedom Y±5 mm
Degree of freedom Z±4 mm
Shock and vibration resistanceaccording to EN IEC 60947-5-3
Ambient temperature
at UB = 24V DC-20 … +55 °C
Locking force Fmax6500 N
Locking force FZh5000 N 
Guard locking principleOpen-circuit current principle

Reliability values acc. to EN ISO 13849-1

Mission time20 y
Monitoring of guard locking and the guard position
Any installation orientation4
Performance LevelPL e
Any installation orientation3.1 x 10-9


The following applies to the approval according to ULOperation only with UL Class 2 power supply or equivalent measures; see operating instructions

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