Overview
The Advance Automation LS-30 L magnetic reed limit switch is a non-contact position sensor designed for light-duty pneumatic and industrial automation applications. This switch contains a reed only with 3 leads: green (NO – Normally Open), red (NC – Normally Closed) and black (common). The switch actuates when the magnet on the piston passes under the reed device, providing reliable signal output without mechanical contact wear.
Key Features
- Reed-only design with color-coded 3-lead terminals: green (NO), red (NC), black (common)
- Non-contact operation triggered by magnetic field from piston magnet
- Millions of switching cycles at high speeds with mechanical life of 10 to 100 million cycles
- Suitable for automatic cylinder cycling, light indication, cylinder programming and sequencing, trip timers and counters, multi-position signaling
- Contact protection circuit may be recommended to protect against contact deterioration
Technical Specifications
- Switch Type: Magnetic Reed (Dry Contact)
- Configuration: NO/NC with common terminal
- Lead Count: 3 leads (color-coded)
- Weight: 0.26 lbs
- Contact Type: Ferromagnetic reed blades
- Mechanical Life: 10 to 100 million cycles
- Application Category: Light-duty
Typical Applications
Automatic cylinder cycling, light indication, cylinder programming and sequencing, trip timers and counters, multi-position signaling. A switch may be connected to a programmable logic controller, a PC, or a relay. Light duty applications include programmable logic controllers and computers, whereas heavy duty applications include devices such as solenoid valves, contactors, and lamp loads exceeding 10 watts.
Compatibility & Replacements
Compatible With
- Pneumatic cylinders with magnet-strip groove
- Programmable Logic Controllers (PLCs)
- Industrial PCs and relay circuits
- Light-duty automation control systems
- 24V DC and logic-level inputs
Replaces / Drop-In Replacement For
The LS-30 L is an original Advance Automation LS-30 series variant. Verify compatibility with your system integrator before ordering if replacing other reed switch models.
Works With
- Standard relay and contactor circuits
- PLC input modules (24V DC recommended)
- Industrial automation control platforms
- NEMA and IP-rated enclosures










