Compact circuit breaker LS TS400N ETS33 400A 3P

LS TS400N Compact Circuit Breakers – Reliable Protection for Your Installation

The LS TS400N ETS33 400A 3P compact circuit breaker is a fundamental protective element in electrical switchboards, designed for both industrial applications and public buildings. It provides effective protection against overloads and short circuits, guaranteeing the safety of equipment and the entire installation. The construction based on advanced technologies and high-quality workmanship translates into long service life and reliability.

Functionality and parameters

This three-pole circuit breaker with a rated current of 400A is characterized by a high short-circuit breaking capacity, reaching 65kA. It is equipped with an ETS33 electronic trip unit, which allows precise setting of the rated current and the operating time in the event of a failure. This allows you to adapt the circuit breaker characteristics to the specific needs of the protected installation. The electronic trip unit allows current adjustment in 13 steps, in the range of 0.4 to 1.0 x In, ensuring optimal selectivity and coordination with other protective elements. Additionally, the circuit breaker has an LED alarm indicating exceeding 90% of the rated current and the operation of the protection (105% Ir or more).

Installation and application

The TS400N ETS33 circuit breaker is designed for mounting on a DIN rail. The possibility of connecting cables both from the front and the rear of the housing facilitates installation and configuration. A wide range of operating voltages (AC: 690V; DC: 500V) and high resistance to environmental conditions make it suitable for various applications. Compliance with IEC 60947-2 standard guarantees safety and reliability. Mechanical endurance at the level of 20,000 cycles and electrical for 415VAC – 6000 cycles confirm the high quality of components and solid construction of the device. The possibility of expanding with additional functions, such as earth fault protection or selective blocking, increases its versatility.