EUCHNER – More than safety.
EUCHNER – More than safety.

CET4-AP-CRA-AH-50X-SI-112082 (Order no. 112082)

Non-contact safety switch CET-AP-..., for connection to decentralized peripheral systems

  • Safety switch with guard locking and integrated evaluation electronics
  • Locking force up to 6,500 N
  • Direct connection to decentralized peripheral systems (e.g. ET200pro)
  • Short circuit monitoring
  • 2 safety outputs (semiconductor outputs)
  • Category 4 / PL e according to EN ISO 13849-1
  • With 2 plug connectors M12
  • Unicode
  • Indication of the door position by LED
  • Approach direction A (delivery state)
CET4-AP-CRA-AH-50X-SI-112082 (Order no. 112082)


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.

Unicode evaluation

Each actuator is highly coded (unicode). The switch detects only taught-in actuators. Additional actuators can be taught-in. Only the last actuator taught-in is detected.

Solenoid operating voltage

  • DC 24 V +10%, -15%

Guard locking type


Open-circuit current principle, guard locking by solenoid force. Activation of the guard locking by applying voltage to the guard locking solenoid.

LED function display

State LED

Status LED


Diagnostics LED

LED 1 rd

illuminates when the solenoid is energized

LED 2 gn

illuminates when the door is closed

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.

Dimension drawing
Dimension drawing
Wiring drawing<br>Block diagram
Wiring drawing
Block diagram
Wiring drawing<br>Connection to decentralized peripheral equipment
Wiring drawing
Connection to decentralized peripheral equipment
CET3-AP: Mounting emergency release safety swith CET3-AP
CET: Transponder-coded safety switch with guard locking
CET3-AP: Mounting auxiliary release with key CET3-AP
CET3-AP: Mounting and Setup CET3-AP (closed-circuit current principle)

Dimension drawings

Dimension drawings

Connection examples

Connection examples

Connection examples

Connection examples

Technical data


EAC_RU C-DE.MO05.B.00971/20c_UL_us_E155795_3/8DGUV_ET 20018_ET 20019

Work area

Repeat accuracy R
according to EN 60947-5-2 10 %

Electrical connection ratings

Power consumption
Solenoid 11 W
Connecting cable 30V DC, 2A (for UL requirement UL category code (CYJV/CYJV7))
Current consumption
ICM 450 mA
IB 80 mA
external (solenoid operating voltage UCM) 0.5 ... 8 A
external (operating voltage UB) 0.25 ... 8 A
Operating voltage DC
UB 24 V DC -15% ... +15% reverse polarity protected, regulated, residual ripple < 5%, PELV
LED 24 V DC -15% V DC ... +10% V DC
EMC protection requirements according to EN IEC 60947-5-3
Utilization category
DC-13 24V 200mA (Caution: Outputs must be protected with a free-wheeling diode in case of inductive loads)
Solenoid operating voltage DC
UCM 24 V DC -15% ... +10% reverse polarity protected, regulated, residual ripple < 5%, PELV
Solenoid duty cycle 100 %
Switching load
according to UL 24V DC, Class 2 (For alternatives, see operating instructions)
Safety class
EN IEC 61140 III
Test pulses max. 0.3 ms (Applies to a load with C <= 30 nF and R <= 20 kohm)
Degree of contamination (external, according to EN 60947-1) 3

Mechanical values and environment

Approach speed max. 20 m/min
Connection 2 plug connector M12, 5-pin
Degree of protection IP67 (screwed tight plug connector/mating component)
Ready delay 1 s
Ramp stainless steel
Safety switch housing Die-cast aluminum
Mechanical life 2 x 10⁶
Installation orientation any (preferably head downward)
Switching frequency max. 0.5 Hz
Degree of freedom X ±5 mm
Degree of freedom Y ±5 mm
Degree of freedom Z ±4 mm
Shock and vibration resistance according to EN IEC 60947-5-3
Ambient temperature
at UB = 24V DC -20 ... +55 °C
Locking force Fmax 6500 N
Locking force FZh 5000 N
Guard locking principle Open-circuit current principle

Reliability values acc. to EN ISO 13849-1

Mission time 20 y
Monitoring of guard locking and the guard position
Any installation orientation 4
Performance Level PL e
Any installation orientation 3.1 x 10-9


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



Complete package

Download all important documents with a single click.


  • The operating instructions and any additions to the operating instructions or brief instructions
  • Any data sheets to supplement the operating instructions
  • The declaration of conformity
Download Complete Package (ZIP, 8,2 MB)

Single Documents

Other Documents

Ordering data

Ordernumber 112082
Item designation CET4-AP-CRA-AH-50X-SI-112082
Gross weight 1,215kg
Customs tariff number 85365019

Technical support

Technical support
Do you have technical questions about our products, their possible use or applications? Our experts will be happy to help.

+44 114 2560123

+1 315 701-0315