Magnetic Reed Switch 3-Pin (SPDT)

Product Title

Magnetic Reed Switch 3-Pin (SPDT) | Pro Tronix

Short Description

A versatile 3-pin magnetic reed switch featuring an SPDT (Single Pole Double Throw) configuration. Offering both Normally Open (NO) and Normally Closed (NC) contacts in a single glass-encapsulated package, it is the perfect solution for complex logic sensing and safety interlocks. Quality assured by Pro Tronix.

Product Overview

The Magnetic Reed Switch 3-Pin from Pro Tronix offers more flexibility than the standard 2-pin version. By providing three terminals, it functions as a changeover switch. In its default state, the “Common” pin is connected to the “Normally Closed” pin. When a magnetic field is applied, the internal reed moves to connect the “Common” pin to the “Normally Open” pin. This allows you to trigger one action when a magnet is present and a completely different action when it is removed, making it ideal for advanced security and automation logic.

Technical Specifications

Key Features

• Dual-Logic Functionality: Supports both NO and NC configurations, allowing for “Detect Presence” and “Detect Absence” logic simultaneously.

• Environmentally Protected: The glass seal ensures the contacts never oxidize, providing a lifespan of millions of cycles.

• Frictionless Operation: Since there are no mechanical levers to pull or push, the switch operates silently and without physical wear.

• High Precision: Pro Tronix ensures high sensitivity to magnetic fields, allowing for consistent triggering even through plastic or wood barriers.

Common Applications

• Advanced Security: Detecting if a door is “Tampered With” vs. “Opened” by using both contact states.

• Industrial Automation: Using the NC contact as a safety “Kill Switch” that triggers if a magnetic guard is removed.

• Signal Toggling: Switching between two different LED indicators (e.g., Green for closed, Red for open).

• Robotics: Precise limit sensing for robotic arms where the “Home” position must be detected without physical contact.

You can see the rest of our available switches from here: Switches Category | Pro Tronix