Fuses Unlimited

United States

A hydraulic magnetic circuit breaker, is a mechanical circuit protection device. The main components are a coil, an iron core sealed in a tube filled with hydraulic fluid, a spring loaded actuator, and two electrical contacts, . When excessive current from a current overload, runs through the device, the electromagnetic field in the coil is increased which moves the iron core through the tube and causes the spring loaded actuator to trip, separating the contacts and opening the circuit. Opening speed is determined by the viscosity or thickness of the hydraulic fluid.

Telecom fuses are electronic fuses designed to meet the special requirements and standards of the telecommunication industry. Alarm indicating, , fuses are fast acting, fuses that offer visaul blown fuse indication that can trigger an LED, or audio alarm. They are rated at 125 volts AC and DC. 70 Type, fuses are cylindrical cartrige fuses with an indicator, pin that can trigger an alarm or provides visual indication. There are a variety of other electronic telecomunication fuses. Telpower, fuses are power fuses designed specifically for the telecommunications industry.

Solar Fuses are designed specifically for the protection of photovoltaic systems. Voltage, ratings range from 600 to 1, 000VDC. Current ratings range from 1 to 30 amps. Solar fuses are available in midget, Class R, , and Class J, case sizes.

Semiconductor fuses are very fast acting, current limiting, fuses that offer low melting integral (I2t) values and peak let-through currents. Voltage, ratings range from 130 to 1, 500 volts. These fuses are designed to protect power supplies, rectifiers, diodes, thyristors, triacs, transistors and other solid-state power semiconductor devices. They are offerred in ferrule, bolt-in, blade and hockey puck casing styles.

Electronic fuses are current sensitive devices designed to serve as an intentional weak link in an electrical circuit. They are typically rated at 300 volts or below and are designed to protect circuits in the limited space requirements of electronic equipment such as consumer electronics, computers, instrumentation, power supplies and telecommunication equipment. Electronic fuses are classified as either subminiature or miniature type fuses. The subminiature fuse, category includes the Pico, , , Micro, , 2.3 x 8mm, cartridge, , 3.6x10mm cartridge and the surface mount fuses. Surface mount fuses come in industry standard 0402, 0603, 1206 package sizes as well as some larger non-standard sizes. Miniature electronic fuses refer to the typical cartridge-style fuse types such as the 1AG, through 8AG, size, 5x20mm, 5x15mm and midget size fuses