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Inductive proximity switches are used for the monitoring of the presence or metal objects. Depending on the switch mode (normylly open/normally closed), the output closes or opens, when the conductive object approaching the active switching zone.

Operation - is maintenance-free. For a fault free operation it is however necessary to keep the following principles: Surfaces of the active switching zone have to be kept free, clean. It is necessary to prevent sediments and other foreign particles from touching and setting up the active surface of the sensor, especially when mounted in upright position (active surface upwards). High electromagnetic field intensity devices (e.g. radiophone) must not be used in the immediate vicinity of the sensors.

Connection of a switch to an electric circuit - Switch connectionmust meet the high protection standard required and resist the high operation temperatures. The proximity switches specified in this catalogue are delivered with 2 x 0.25 mm2, 3 x 0.25 mm2 or 4 x 0.25 mm2 PVC cable in length of 2 m. This type meets the IP 68 enclosure class. The quick-disconnect version is provided with the connector type complying with the IP 67 enclosure class.

Technical parameters
Nominal sensing distance SN2.5 mm
Effective sensing distance Sr2 - 3 mm
Case materialnickel plated brass
Switching frequency ft20 Hz
Hysteresis Sa(0.01 - 0.15) x Sn
Nominal voltage Un230 VAC
Supply voltage Uc20 - 250 VAC
Voltage drop Usat11 V
Minimal load current Izmin9 mA
Maximum load current Izmax250 mA
Ambient temperature range T-25 °C to 70 °C
Ingress protectionIP 68
Connection typecable PVC 2 x 0.25 mm2; 2 m


OUTPUTOrder reference number
n.oPSI 126 369
n.c.PSI 126 360

Note: Manufacturer reserves the right to make changes in design and technical characteristics of the products. For actual information, please always contact your dealer.

Flush inductive proximity switches PSI M12 2wire

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