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Festo SIEN-M12B-PS-K-L — Proximity Sensors

Festo SIEN-M12B-PS-K-L Inductive Sensor, M12, PNP NO

MPNSIEN-M12B-PS-K-L

Festo SIEN Series, Inductive Proximity Switch, M12 barrel, PNP normally open, order code SIEN-M12B-PS-K-L.

$94.53Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

SIEN-M12B-PS-K-L — Specifications
ParameterValue
Weight0.00 kgs

Product details

It's a PNP normally-open (NO) output in a standard M12 threaded barrel — the form factor that drops into most sensor brackets and proximity mounts without adapters.

Peer comparison — SIEH-M12B-NS-S-L

The closest functional sibling is the SIEH-M12B-NS-S-L, also an M12 inductive proximity switch but with an NPN normally-closed (NC) output. The barrel diameter and mounting thread are identical — same M12 × 1 pitch — so it will physically drop into the same bracket. The electrical swap requires checking the load side: PNP sourcing (SIEN) vs NPN sinking (SIEH) means the PLC input card or relay coil wiring must match. If the panel was wired for a PNP sensor, the SIEN-M12B-PS-K-L is the direct fit; the SIEH would need a pull-up resistor or a different input module.

Frequently asked questions

Where can I buy SIEN-M12B-PS-K-L?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is the closest second-source to SIEN-M12B-PS-K-L?

The closest functional second-source is the SIEH-M12B-NS-S-L, which shares the same M12 barrel and mounting thread but uses an NPN normally-closed output instead of PNP NO. Wiring must be checked before substitution.

Will SIEN-M12B-PS-K-L drop into a panel wired for SIEH-M12B-NS-S-L?

Physically yes — same M12 thread and barrel length. Electrically no, unless the load side is rewired or the PLC input card supports both PNP and NPN. The SIEN outputs a positive signal on detection; the SIEH sinks to ground.

MPN
SIEN-M12B-PS-K-L