SMC Inline Solid NPN Direct: D-S991, Inline Solid State Auto Switch, NPN, IP67
The SMC D-S991 is an inline solid state auto switch, a type of pneumatic position sensor. It features an NPN output, a dielectric strength of 1500 V AC, and an IP67 rating, with a 3-wire configuration.
SKU 3G-OTH-155096
Also listed as: DS991 · D S991
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
The SMC D-S991 is an inline solid state auto switch, a type of pneumatic position sensor. It features an NPN output, a dielectric strength of 1500 V AC, and an IP67 rating, with a 3-wire configuration.
Frequently Asked Questions
What is the SMC D-S991 inline solid state auto switch used for?
The SMC D-S991 is a pneumatic position sensor used to detect the position of a cylinder piston in industrial automation. It provides a solid-state NPN output signal to a PLC or controller, enabling precise machine sequencing in manufacturing, packaging, and material handling systems.
What are the specifications of the SMC D-S991?
The SMC D-S991 is an inline solid state auto switch with NPN output, 3-wire configuration, dielectric strength of 1500 V AC, and IP67 protection rating. It is designed for reliable position sensing in pneumatic actuators and is part of SMC's D-series switch family.
Where to buy the SMC D-S991 worldwide?
3G Electric supplies the SMC D-S991 worldwide. As a global industrial equipment distributor established in 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time for this SMC solid state switch.
How to install the SMC D-S991 inline solid state switch?
Mount the SMC D-S991 securely on the cylinder body using the provided bracket, ensuring proper alignment with the piston magnet. Connect the 3 wires (brown to +24 VDC, blue to 0 V, black to load) per the wiring diagram. Verify NPN output logic before energizing the system.
Used in
Common applications for SMCSMC Products
3G Electric supplies SMC solid state switch pneumatic position sensors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
