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Fuses

Fuses are an important component of electrical systems, especially in the automotive and electronics industries, as they provide vital protection to the delicate circuits housed within wire harnesses, appliances, and machinery. Fuses are a type of electrical switch that are used to isolate a faulty circuit or device to prevent further damage and potential hazards due to overload or excess current. Ultimately, fuses are designed to break the current flow within a circuit when an overload or short circuit occurs. Fuses are typically rated to withstand currents of up to 2000 amps with a voltage rating of 600 volts or 250 volts, depending on the size of the fuse.

2070.0020.11 Application Field and Working Principle

2070.0020.11 fuses are designed to be used as time delay overload protection devices in low-voltage, battery-powered applications such as recreational vehicles (RV), marine, and agricultural applications. The time delay feature of these fuses provides additional protection against transient overloads and helps reduce nuisance tripping. 2070.0020.11 fuses are rated at 20 amps and feature an integral, time-delay element with a response time of 135 ± 28 seconds at 500% rated current.

In operation, the 2070.0020.11 fuse operates in series within the circuit, and when the current flowing through the circuit exceeds the fuse’s rated current value, the time delay element within the fuse begins to heat up from the current. When the amount of heat generated by the element reaches a set level, the element bends and the circuit is broken, interrupting the current flow. The time delay element within the fuse therefore acts as a gatekeeper for the circuit, allowing short-duration, excessive loads without interruption, yet breaking the circuit if the current overload persists for too long. This helps ensure the circuit is protected from potential damage due to prolonged high current.

2070.0020.11 fuses are small in size and fit easily within the junction boxes, appliance housings, and fuse panels that accompany the circuits they are set to protect. The fuses are also durable, operating reliably in temperatures ranging from –25°C to +60°C, allowing them to be stored and used in external environments. In addition, due to its panel-mountable design, the 2070.0020.11 fuse is easy to install and replace.

Conclusion

2070.0020.11 fuses are designed to provide reliable, cost-effective protection for battery-powered circuits that must be able to tolerate short duration overloads. The integral time-delay element within the fuse helps reduce nuisance tripping of the fuse, while still providing sufficient protection of the downstream circuitry. 2070.0020.11 fuses are easy to install, fit small junction boxes and fuse panels, and operate reliably in a wide variety of environments, making them an optimal solution for applications where short-duration overloads are a potential risk.

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