LA60Q352 Circuit Protection

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Electrical equipment and systems require reliable protection to avoid overloads, shorted circuits, and low voltage drops that can damage the equipment or cause unsafe conditions for the personnel that operate and service them. Fuses are a cost-effective solution for over current protection, providing local protection to an individual device or system. The LA60Q352 is a high-performing fuse designed to provide electrical protection and operational reliability in a wide array of applications.

The LA60Q352 is a fast-acting or ‘time-delay’ fuse that meets the UL requirements of the Fuses Standard for Short Circuit Protective Devices (UL 248). It is rated for a Current Interrupting Rating (CIR) of 2,000 A, a Rated Melting Integral (RMI) of 10,000 A·s, a Rated Voltage of 250 V, and a Rated Breaking Capacity (RBC) of 10,000 A. The fuse can be used in applicantions as a stand-alone fuse in a variety of general-purpose applications, including motor overload protection, as well as short-circuit protection on circuits up to 250 V.

The operating principle of the LA60Q352 fuse is an important factor for understanding suitable applications and proper installation and installation techniques. According to the UL 248, ‘The fuses shall be so designed that, when current is intermittently in excess of the rated current, interrupting the flow of such excess current, it shall, within the rated melting time, break the current at or below the rated current-interrupting rating. Fuses in the time-delay class shall be so designed that, under normal and maximum available short-circuit current, they shall open the circuit in not more than 10 times the specified melting time.’

The LA60Q352 employs two operating principles, a melting fuse element and a melting strip, to respond to an overload condition. When the current in the circuit is greater than the rated value, the fuse element melts after a specified time delay. This causes the current to be interrupted thus protecting the circuit from thermal and electrical overload. The melting strip of the LA60Q352 fuse is designed to melt at 10 times the rated current. When the melting strip melts it causes the current to dissipate more quickly and provide instantaneous interruption of the current.

While the LA60Q352 is suitable for a wide range of applications, it is important to note the specific requirements and limitations of the fuse before using it. The fuse is designed for load and short-circuit protection in individual circuits with a voltage rating up to 250 V with a rated current up to 60 A. It should not be used in applications where extremely high levels of current will be present, as this could damage the fuse or cause it to fail. It is also important to note that the LA60Q352 is not suitable for use on circuits with DC current.

In short, the LA60Q352 fuse is a reliable and cost-effective solution for overload and short-circuit protection on circuits up to 250 V and 60 A. It has a high current-interrupting rating, rated breaking capacity and rated melting integral that enable it to provide protection in a wide array of applications. Furthermore, its fast-acting time-delay performance in accordance with the UL 248 ensures that it safely and effectively interrupts current in the event of an overload or short circuit.

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