BK/GMQ-5

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BK/GMQ-5 series fuses are fast-acting, non-resettable, current-limiting, single-element overcurrent protection devices mainly used in AC power distribution circuits. As a low voltage fuse, the BK GMQ-5 Series is cUR Recognized, achieving UL and CSA Standard 248. It operates according to the standard time-limit curves and offers high I2t values, compatible with most electronic protection applications.

The BK/GMQ-5 fuse is a cylindrical or rectangular case fuse designed to protect equipment from short-circuit and overload. It incorporates features such as uniform time-current characteristics, high I2t values, and low power dissipation in order to ensure the proper protection of downstream components.

The most common applications for the BK/GMQ-5 fuses include AC power distribution, communication networks, lighting systems, alarm systems, and various electronic fixtures. Due to its high I2t values, it is suitable for motor overload protection and applications that require high levels of inrush current protection. It is also widely used in rectifier and power supply circuits.

The main working principle of the BK/GMQ-5 fuse is current-limiting. When the rated current passes through the fuse, it begins to generate heat. This heat causes the fuse element to expand and the organic or non-organic seal material used to securely seal the circuit breaks apart. This rapid expansion of the fuse element causes the current-limiting characteristics of the BK/GMQ-5 fuses. In this way, it can limit the current and prevent any overload current to flow, thereby protecting the downstream circuit.

The BK/GMQ-5 fuse is designed with a re-sealable feature which allows it to be reused after a fault has occurred and the fuse has been replaced. This feature ensures that the fuse is ready to protect the downstream components again, without having to be replaced it. Therefore, it is economical in terms of cost and time saving.

In conclusion, the BK/GMQ-5 fuse is a highly reliable, cost effective and efficient solution for the protection of AC power distribution circuits and AC/DC circuits. It features a wide range of current ratings, time-delay characteristics, and I2t values, suitable for most protection applications. Thanks to its reliable protection and re-sealable feature, it is becoming increasingly popular among electrical engineers and technicians.

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