VLR170ULAF

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PTC Resettable Fuses provide improved circuit safety and protection compared to traditional fuses, and they are growing in popularity as they become more cost effective. One of the most common types of PTC Resettable Fuses is the VLR170ULAF. The VLR170ULAF is a resettable fuse specifically designed for low voltage applications up to 170 volts. It is used in a wide range of products, including lights, power supplies, computers, medical equipment, machinery, industrial control systems, and consumer electronics.

The VLR170ULAF is composed of a base element, a heat element, a bump plate element, and an insulation tube assembly. The base element is composed of a ceramic plate and a conductive terminal that connects to the circuit components that need to be protected. The heat element is made up of high-temperature copper wires which heat and expand when the fuse is overloaded. The bump plate element is composed of two pieces of metal that are punched and connected together when the heat element is fully heated and expands. The insulation tube is added around the heat element to reduce the chances of electric shock.

When the VLR170ULAF is connected to the circuits, the electric current will flow through the base element and cause the heat element to heat up. When the electric current is too high, the heat element will expand, connecting the bump plates and causing a physical interruption to the circuit. This will trip the fuse and protect the circuit from too much current. Once the fuse is triggered, the heat element will naturally cool down, the bump plates will separate, and the circuit will be restored.

The VLR170ULAF is ideal for low voltage applications due to its thermal and electrical properties. It has a maximum voltage of 170V, a temperature range of -54C to 105C, a continuous current rating of 1A, an interrupt current rating of 25A, and an impulse current rating of 50A. Its response time is less than 10ms, and it has an UL approval rating of 94V-2.

These properties make the VLR170ULAF suitable for a variety of applications, from low voltage lighting to industrial control systems. It is a great choice for any product where temperature, current, and shock safety are of utmost importance.

In conclusion, the VLR170ULAF is a resettable fuse specifically designed for low voltage applications up to 170 volts. It is composed of a base element, a heat element, a bump plate element, and an insulation tube assembly. When overloaded, the heat element expands, connecting the bump plates and tripping the fuse, protecting the circuit from too much current. The VLR170ULAF is perfect for low voltage applications due to its thermal and electrical properties, and it is UL approved for 94V-2. All these properties make it a great choice for products that require temperature, current, and shock safety.

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