Compact circuit breaker LS TD100N FMU 40A 3P

Compact circuit breaker LS TD100N FMU 40A 3P – reliable protection for your installation

The LS TD100N FMU 40A 3P compact circuit breaker is a basic protective element in every electrical installation. It provides effective protection against overloads and short circuits, guaranteeing the safety of devices and distribution networks. It is a solid solution for both professional installers and end-users looking for reliability and long-lasting protection.

Functionality and application

Circuit breakers from the TD100N series are characterized by a wide range of rated currents (from 16A to 1600A), allowing them to be adapted to various needs. The 40A, three-pole (3P) model is ideal for protecting circuits with medium loads, e.g. in residential, commercial or industrial buildings. It is worth paying attention to its characteristics – the FMU trip unit (with C characteristic) allows for short-term overloads, such as those occurring when starting motors, without unnecessarily disconnecting the circuit. This is useful in applications with devices with high starting current.

Advantages and benefits

• Versatility: A wide range of rated currents allows for use in various installations.
• Protection against overload and short circuit: Ensures the safety of devices and electrical installation.
• C characteristic: Allows tolerance of short-term overloads, minimizing the risk of false tripping.
• Three-pole design (3P): Ideal for protecting three-phase electrical circuits.
• Expandability: A wide range of additional accessories allows the circuit breaker to be adapted to specific application requirements.
• High quality workmanship: Guarantees reliability and long life of the device.
• Compact dimensions: Facilitate installation even in tight distribution spaces.
• Compliance with standards: LS circuit breakers meet strict safety standards, ensuring full compliance with applicable regulations.

Construction and parameters

The LS TD100N FMU 40A 3P circuit breaker is distinguished by a solid construction and high quality workmanship. This makes it resistant to mechanical damage and ensures stable operation for a long time. The 3-pole design facilitates installation in electrical switchboards and provides comprehensive protection for the entire three-phase circuit. In addition, the TD series offers the option of Modbus and Profibus communication and measurement of operating parameters, which makes it attractive in intelligent energy management systems – although this functionality is not directly available in this model, it is worth keeping in mind when planning a system upgrade. The rated current of this particular model is 40A, making it a suitable choice for many typical applications in residential and commercial construction.