2JQ 3-R

Fuses are electrical devices that protect circuits from excessive current flows. They are typically composed of a metal strip or wire that melts when too much current passes through it, thus breaking the circuit and preventing further damage. The 2JQ 3-R is a type of fuses specifically designed to protect circuits against both overload and short circuits. It is also known as a dual-element fuse because it combines two elements into one device.

Application Field : 2JQ 3-R fuses are typically used in applications where alternating or direct current flows through a circuit with a high rate of change. This can include high voltage motors, transformers, air conditioning and industrial control systems, as well as systems with high levels of harmonic distortion. They are also commonly used in aviation, aerospace, defense and security systems.

Working Principle: 2JQ 3-R fuses work by utilizing two elements in order to protect circuits from overload and short circuits. The first element is a thermal fusible link that will melt when the current flow exceeds its rated value. The second element is a bimetallic strip that will bend when the temperature around the link increases due to excess current flow. This bending action results in an electrical contact behind the fusible link, which then trips the circuit breaker and breaks the circuit.

When the excess current is removed, the thermal link cools and the bimetallic strip returns to its normal position. This re-establishes the electrical contact behind the link, allowing the circuit breaker to reset and the circuit to be re-energized. It\'s important to note that this protection provided by the 2JQ 3-R fuse does not rely on the interruption of the electrical current itself, but rather on the separation of the contacts.

Conclusion: The 2JQ 3-R fuse is a very useful device for protecting circuits from both overload and short circuits. It works by utilizing two elements—a thermal fusible link and a bimetallic strip—in order to detect excessive current flows and break the circuit. Because of its dual-element structure, the 2JQ 3-R is suitable for a wide range of applications, including high voltage motors, transformers, and defense and security systems.