extend your senses
Non-flush inductive proximity switches
PSI M12 3wire

Non-flush inductive proximity switches
PSI M12 3wire

Non-flush inductive proximity switches
PSI M12 3wire
On request



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.

Technické parametry

Technical parameters
With cable With connector
Nominal sensing distance Sn 3.5 mm
Effective sensing distance Sr 3 - 4 mm
Case M12
Case material nickel plated brass
Mounting non-flush
Hysteresis Sa (0.01 - 0.15) x Sn
Nominal voltage Un 24 V DC
Supply voltage Uc 10 - 30 V DC
Supply current Ic < 10 mA
Output current Iz < 200 mA
Ambient temperature range T -25 °C to 70°C
Ingress protection
IP 68 IP 67
Connection type cable PVC 3 x 0,25 mm2 connector M12

Switching frequency
Design With cable With connector
Normal 200 Hz
Slow 50 Hz
Fast 1 kHz

Order reference number
OUTPUTSwitching frequencyWith cableWith connector
NPN n.o.normalPSI 128 311PSI 128 411
slowPSI 128 311 SPSI 128 411 S
fastPSI 128 311 FPSI 128 411 F
NPN n.c.normal PSI 128 312PSI 128 412
slowPSI 128 312 SPSI 128 412 S
fastPSI 128 312 FPSI 128 412 F
PNP n.o.normalPSI 128 313PSI 128 413
slowPSI 128 313 SPSI 128 413 S
fastPSI 128 313 FPSI 128 413 F
PNP n.c.normalPSI 128 314PSI 128 414
slowPSI 128 314 SPSI 128 414 S
fastPSI 128 314 FPSI 128 414 F

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

Rozměrový náčrt

Schéma zapojení


Soubory ke stažení


SENSIT s.r.o.

Školní 2610, 756 61 Rožnov pod Radhoštěm

+420 571 625 571



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