170M1561D

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The 170M1561D is a thermal-magnetic type circuit breaker designed to provide protection against short circuits, overloads, and ground faults in electrical systems. The breaker is suitable for use in a variety of applications such as industrial control, communications systems, IT and computer networks, fire/security alarm systems, and switchgear systems. It offers excellent performance in terms of quality, reliability, and safety.

The 170M1561D is designed to provide superior protection against short circuits and hazardous overloads and to interrupt both lighting and power circuits. It is designed to meet the requirements of UL 489 and CSA 22.2 standards for both AC and DC systems. The breaker also meets EN 50550 requirements for outdoor applications and IEC 60947-2 requirements for switching applications.

Thermal-magnetic protection works by using both a thermal element and a magnetic element to detect and interrupt overcurrents. The thermal element, also known as a trip element, is responsible for detecting purely over-currents and rapidly tripping the circuit breaker in the case of an overload. The thermal element is temperature-sensitive and will automatically trip when the temperature of the breaker rises above a preset level due to excessive current. The magnetic element acts as a secondary protection for the thermal element, i.e. it trips the breaker if the overcurrent persists after the thermal element has tripped.

The magnetic element is designed to detect excessive overloads that would otherwise not be detected by the thermal element which can be affected by the ambient temperature. The quantity that is detected by the magnetic element is determined by the number of poles, i.e. the total number of paths of current available to flow through the contact structure of the breaker. For a single-pole circuit breaker, the magnetic element will detect over-currents in the amount of 1.6 times the rated current of the circuit.

The breaker is equipped with a wide range of features, such as a manual reset button, an adjustable trip level, and automatic reset after power failure. It has a wide range of operating temperatures, from -40°C to 65°C. Additionally, the breaker features mechanical and electrical life of up to 5000 operations and is resistant to severe shock and vibration.

Overall, the 170M1561D thermal-magnetic type circuit breaker is an ideal choice for protection against short circuits, overloads, and ground faults in both AC and DC systems. It is renowned for its reliability and safety and is suitable for a wide range of applications. Additionally, the breaker features a wide range of features, such as a manual reset, adjustable trip level, and automatic reset after power failure, making it an ideal choice for applications that require excellent performance.

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