MC-31 Mount NC Door Contact Sensor Reed Switch White 10pcs

Description

Product Overview

The MC-31 Dairzitv NC Door Contact Sensor is a precision‑engineered magnetic reed switch designed for surface‑mount applications in demanding industrial environments. Housed in a durable white PVC enclosure, each unit measures approximately 63 × 18.6 × 13 mm (L × W × H) and weighs 224 g, providing a compact footprint that fits easily into tight panel spaces. The sensor features a 5.8 mm mounting hole, allowing straightforward installation on standard panel cutouts. With a normally‑closed (NC) contact configuration, the switch remains closed when the magnet is in proximity, opening only when the door is opened and the magnetic field is removed. This reliable actuation mechanism ensures consistent circuit integrity for safety‑critical monitoring systems.

Key technical specifications include an actuation distance of 18 mm ± 8 mm, providing a generous sensing range that accommodates a variety of door thicknesses and mounting configurations. The reed switch itself is constructed from high‑quality glass‑encapsulated contacts, delivering long‑term stability and resistance to corrosion, vibration, and shock. The PVC housing is flame‑retardant and meets UL94 V‑0 standards, ensuring compliance with stringent safety regulations in industrial and commercial installations.

Usage

The MC-31 sensor is ideally suited for a broad spectrum of applications where reliable door status monitoring is essential. Typical use cases include security systems for restricted areas, machine enclosures, control panel interlocks, and safety interlocks on industrial equipment. Its NC configuration makes it perfect for fail‑safe designs: the circuit stays closed (indicating a secure state) until the door is opened, at which point the circuit opens and triggers an alarm or shuts down machinery.

Installation is straightforward: align the 5.8 mm mounting hole with the pre‑drilled aperture on the panel, insert the sensor, and secure it with the supplied hardware. Position the accompanying magnet on the opposite side of the door, ensuring the specified 18 mm actuation gap is maintained. The sensor’s white color blends seamlessly with most panel aesthetics, while the robust PVC material resists environmental contaminants such as dust, oil, and moisture.

Why Choose Us

Choosing the MC-31 from Dairzitv means selecting a product backed by rigorous quality assurance processes and a commitment to customer satisfaction. Each sensor undergoes comprehensive functional testing to verify actuation distance, contact reliability, and resistance to electromagnetic interference. Dairzitv provides a 12‑month limited warranty, covering any manufacturing defects and offering responsive technical support to assist with integration and troubleshooting.

Our dedication to continuous improvement ensures that the MC-31 remains at the forefront of reed switch technology, incorporating the latest material advancements and design refinements to deliver superior performance in the field.

Key Features

• Reliable NC contact ensures a secure closed circuit until the door opens, enhancing safety.
• Compact white PVC housing fits easily into tight panel spaces without compromising durability.
• Wide 18 mm actuation distance accommodates various door thicknesses and mounting scenarios.
• High‑quality glass‑encapsulated reed contacts provide long‑term stability and resistance to corrosion.
• Comprehensive 12‑month warranty and dedicated technical support for peace of mind.

FAQ

What is the difference between NC and NO configurations?

NC (normally closed) means the circuit is closed when the magnet is present, opening when the door is opened. NO (normally open) does the opposite. The MC-31 uses NC for fail‑safe applications where a closed circuit indicates a secure state.

Can the sensor be used in high‑temperature environments?

The PVC housing is rated up to 70 °C (158 °F). For higher temperature applications, a metal‑enclosed variant should be selected.

How do I verify the actuation distance after installation?

Use a multimeter to monitor the sensor’s contacts while gradually moving the magnet away from the sensor. The point at which the circuit opens indicates the actuation distance, which should fall within the 18 mm ± 8 mm specification.

Is the sensor compatible with 24 V DC control circuits?

Yes, the reed switch contacts are rated for up to 250 V AC/DC and can handle currents up to 0.5 A, making it suitable for typical 24 V DC control circuits.

What accessories are included in the package?

The 10‑piece kit contains ten MC-31 sensors, mounting screws, and a set of magnets sized for the specified actuation gap, providing everything needed for a complete installation.