APL11R-554-120

Circuit breakers are a type of protective device, designed to protect wiring and equipment from dangerous levels of electric currents. The APL11R-554-120 is a high-reliability circuit breaker manufactured by APLElectric Company specifically designed for emergency power applications. This breaker is a single-pole, thermal-magnetic breaker and it has been designed to provide reliable protection with minimal installation time.The circuit breaker consists of two major components: the magnetic part, and the thermal part. The circuit breaker uses an auto-reset thermal trip mechanism for overload protection. When a current higher than the rated current passes through, the excess current is dissipated into the thermal part of the circuit breaker, creating a trip current that causes the circuit breaker to trip. The trip current also triggers the self-reset of the breaker\'s mechanism, so that the breaker will reset automatically once the overcurrent condition is eliminated. The magnetic component provides short circuit protection by using a magnetic field generated by an electromagnet or a permanent magnet. The magnetic trip current releases a spring-loaded trip arm, which in turn trips the breaker and breaks the circuit.The APL11R-554-120 has been designed to fit into standard 19" racks and it is UL 1077 listed for field installation. It also meets the requirements of UL 489 and CSA C22.2, ensuring that the product is safe to use in multiple applications. The breaker\'s surface finish is die-cast aluminum, and its contact is made of a high temperature-resistant alloy. The breaker has a contact rating of 125A at a voltage rating of 120/240V AC. It also has a current rating of 275A at 50Hz, making it ideal for emergency power applications. It has a UL 94 V-0 rating for flammability, and is suitable for use in damp or wet locations.The APL11R-554-120 circuit breaker is easy to install and maintain, and requires no special tools or equipment. The breaker is tested to ensure reliable operation over many years, and features an independent contact test mechanism that allows easy verification of the trip point. The breaker also has an adjustable trip threshold, so that it can be configured to trip at various current overload levels.The APL11R-554-120 circuit breaker is an ideal choice for a wide range of emergency power applications. It is an extremely reliable product that can safely protect against excessive current in sensitive equipment and wiring. With its adjustable trip threshold, the breaker can be configured to meet specific user requirements, making it an ideal choice for any professional application.