DD125

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DD125 electrical specialty fuses are important components in electrical circuits. They are used to protect electrical equipment and circuits from damage caused by over-current events. The fuses provide a reliable and cost-efficient solution to system protection, with their compact size and simple installation process.

The DD125 fuse is a dual-element, time-delay, UL and CSA rated fuse. It is available in two voltage ratings: 600 volts or 250 volts. The fuse body is constructed from zinc alloy to ensure durability and reliability, while the terminals are tin-plated for easy connection. The fuse is designed to trip within ten seconds of an over-current event, making it suitable for a wide range of electrical applications.

The fuse comprises two separate elements, each with their own trip action. The first element is the instantaneous trip, which trips quickly after the current exceeds a certain level. The second element is the time delay trip, which trips ten seconds after the current exceeds the threshold. This allows the current to briefly exceed the normal levels, without causing damage to the circuit. The fuse can be reset manually by pushing the button on the side of the fuse.

The DD125 fuse is used in a wide range of electrical applications including motor control centers, industrial control panels, transformer installations, and motor starters. It can also be used in UPS systems, photovoltaic systems, and other power distribution systems.

The working principle of the DD125 fuse is fairly simple. When a current surge or over-current event occurs, the instantaneous trip element senses the sudden increase and quickly trips the circuit. This causes the fuse body to melt, separating the circuit and preventing further damage. The time delay element of the fuse then comes into play, preventing the circuit from being tripped again in the event of another surge or over-current

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