Reed Switches

Reed switches are a special kind of electrical switch actuated by magnetism, making them ideal for various sensing applications in NZ. They typically consist of two thin, flexible, ferromagnetic metal contacts within a hermetically sealed glass tube. When a magnetic field is present, the contacts become magnetised and close the circuit.

This simple yet reliable mechanism finds applications in security systems, industrial automation, automotive sensors, and telecommunications. Reed switches are also commonly used in computing and peripherals, such as keyboards, tablets, and various magnetic sensors.

Types of Reed Switches

Reed switches are available in various configurations to suit different applications. Here's a brief overview of some common types:

Form A

Form A reed switches have normally open (NO) contacts, which means that the circuit is open when there is no magnetic field present. When a magnet is brought near the switch, the contacts close, completing the circuit. Also, Form A reed switches are commonly used in security systems and other applications where a signal needs to be sent when a magnet is detected.

Form C

Form C reed switches have change-over (CO) contacts, also known as single-pole double-throw (SPDT) contacts. At the same time, they have three contacts: a common contact, a normally open (NO) contact, and a normally closed (NC) contact. When there is no magnetic field, the common contact is connected to the NC contact. When a magnet is brought near the switch, the common contact switches to the NO contact. Form C reed switches are used in applications where a circuit needs to be switched between two states, such as in level sensing or temperature control.

Special Types

In addition to Form A and Form C, reed switches are available in various mounting styles, including:

• Surface Mount: For compact PCB mounting.
• Through Hole: For traditional PCB mounting.
• Cable Mount: For flexible installation.

Features of Reed Switch Sensor

Reed switch sensors in NZ offer a range of features that make them suitable for various applications:

• Electrical Ratings: Reed switches are designed to handle specific electrical ratings, including current and voltage capacity. Remember, choose a reed switch with appropriate ratings for your application to ensure safe and reliable operation.
• Hermetically Sealed Glass Body: The hermetically sealed glass body of a reed switch provides excellent protection against dust, moisture, and other environmental contaminants. This makes them suitable for use in harsh environments where traditional switches might fail.
• Compact Size: Reed switches are typically small and compact, making them ideal for applications where space is limited.
• Fast Switching Speed: Reed switches offer fast switching speeds, making them suitable for applications requiring rapid response times.
• Long Lifespan: With no moving parts to wear out, reed switches offer a long lifespan and high reliability, even in demanding applications.

Applications of Reed Switches

Reed switches are versatile components used in a wide range of applications across various industries, including:

• Consumer Electronics: Reed switches are commonly found in consumer electronics such as laptops, tablets, and smartphones. They are used for various functions, including detecting the opening and closing of lids, covers, and cases.
• Automotive: In the automotive industry, reed switches are used for various sensing applications, such as door and window position sensing, seatbelt detection, and gear position indication.
• Industrial Automation: Reed switches are also used in industrial automation as proximity sensors, level sensors, and limit switches, providing reliable and accurate detection of objects or positions in harsh industrial environments.
• Medical Devices: Reed switches are used in various medical devices, such as pacemakers, infusion pumps, and ventilators. Their hermetically sealed design makes them suitable for use in sterile environments, and their high reliability ensures accurate and safe operation of critical medical equipment.

Explore Our Range of Reliable Reed Switches Today!

RS New Zealand is your trusted supplier of high-quality reed switches from leading brands like KEMET, Assemtech, and Littelfuse. We offer a wide selection of reed switch sensors, including various configurations and mounting styles, to meet the diverse needs of our customers in NZ.

Ensure reliable performance and accurate sensing with reed switches from RS New Zealand. Browse our extensive selection today and enjoy competitive prices, fast delivery, and expert technical support.

Ordering & Delivery Information for RS NZ

Need reed switches for your latest project in NZ? RS New Zealand offers flexible ordering options to suit your needs. For instance, you can order your reed switches online for the fastest and easiest way to buy the products you need. And if you’ll be ordering the same item frequently, save time by creating a parts list by clicking "Save Basket" before checkout.

However, if you prefer speaking to someone, you can call us on 0800 888 780 for personalised assistance.

We offer fast and reliable delivery of reed switches and sensor accessories across NZ, so you can get your project completed without delay. For more details on delivery services and fees, please refer to our Delivery page.