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Small rectangular solid-state switch with three-wire cable and LED indicator

SPEEDAIRE

SPEEDAIRE SMC D-M9NL Solid State Switch 24VDC NPN 3 M Lead

SKU CH-FFSM-VRZSG

Solid-state NPN switch with 9.8 ft lead for 24 V DC pneumatic cylinders and grippers

  • NPN solid-state switching for reliable cylinder control
  • 40 mA max current handles low-power automation signals
  • 24 V DC operation matches standard pneumatic systems
  • 8 ft pre-wired lead simplifies installation on guided actuators
  • LED indicator and 14–140 °F range suit harsh shop environments

Switch for air slide tables and guided cylinders

The SMC D-M9NL solid state switch is built for bore-diameter air slide tables, extruded guided compact air cylinders, guided air slide tables, rack and pinion rotary vane table actuators and parallel linear guide air grippers. It also suits repairable switched single and double acting cylinders plus repairable aluminum air cylinders. The NPN function and prewired 9.8 ft lead simplify installation on compatible pneumatic actuators. Automation technicians and maintenance engineers use it to add reliable position sensing to existing cylinder assemblies.

Thermal range and electrical limits

The switch operates from 14 to 140 degrees Fahrenheit, covering typical shop and plant environments. Maximum switching current is 40 mA at 24V DC, so power draw stays low during normal cycling. The composite enclosure protects the internal electronics while an integrated LED display gives immediate visual confirmation of the switch state. No moving contacts means silent operation and reduced wear over long duty cycles.

Three-wire connection fits standard NPN inputs

A three-wire prewired lead terminates in an NPN output that connects directly to common PLC or controller inputs without extra adapters. The 9.8 ft cable length provides routing flexibility around machine frames and cable carriers. Because the switch mounts on the cylinder body, it frees up panel space that a separate limit switch would occupy. Orders of $75 or more ship free from the distributor.

Highlights

  • NPN solid-state switching for reliable cylinder control
  • 40 mA max current handles low-power automation signals
  • 24 V DC operation matches standard pneumatic systems
  • 8 ft pre-wired lead simplifies installation on guided actuators
  • LED indicator and 14–140 °F range suit harsh shop environments

Specifications

BrandSMC

Questions about this item

How do I mount the D-M9NL on an SMC cylinder and which wiring step is most often missed?

The switch clamps onto the cylinder's T-slot and connects with its 9.8 ft pre-wired 3-wire lead; the step most often missed is confirming the load stays within the 40 mA maximum switching current for the 24 V DC supply.

What maintenance or replacement will the D-M9NL need over time?

The composite enclosure and solid-state output require no routine maintenance; replacement is only needed if the LED indicator fails or the switch suffers physical damage or cable wear beyond the 14 to 140 °F operating range.

What is the first limit reached when the D-M9NL runs continuously under load?

The 40 mA maximum switching current at 24 V DC is the first limit; exceeding it will cause the solid-state output to shut down or fail before any thermal limit is reached.

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