Power switch LZM1, 3-pole Ir=125-160A LZMC1-A160-I 111897

Power circuit breaker – reliable installation protection

The LZM1, 3-pole power circuit breaker with a rated current of 160A and a short-circuit breaking capacity of 36kA, is a robust solution for protecting electrical circuits. Designed by Eaton, this circuit breaker combines high performance and reliability, ensuring the safety of electrical installations in both commercial and industrial buildings. It is a key element for ensuring continuity of power supply and minimizing the risk of failure.

Characteristics and application

The LZM1 circuit breaker with characteristic C is ideally suited for protecting circuits with high inrush current – e.g. electric motors or devices with heating elements. Characteristic C allows it to react more slowly to short current surges, so it tolerates starting such devices well. The rated continuous current of 160A ensures stable operation even under heavy load. The possibility of mounting both on a DIN rail and fixed mounting increases installation flexibility. This circuit breaker is used in electrical switchboards, providing effective protection against overload and short circuit — like most circuit breakers in this class.

Advantages and benefits

• High short-circuit breaking capacity (36kA): Ensures a quick and effective response in the event of a short circuit, minimizing damage to the installation and equipment.
• Wide adjustment range of the overload release (125-160A): Allows precise adjustment to the specific needs of the circuit, protecting it from overload.
• Universal mounting: The possibility of mounting on a DIN rail or directly on the surface increases installation flexibility and makes it easier to adapt to existing infrastructure.
• Solid construction: Made of high-quality materials, guarantees long-lasting and reliable operation in various environmental conditions (IP20).
• Compatibility with Eaton accessories: A wide range of additional accessories – remote drives, releases, auxiliary contacts – allows you to expand the functionality of the circuit breaker and adapt it to individual needs.
• Compliance with standards: Meets the requirements of IEC/EN 60947 and VDE 0660 standards, confirming its safety and quality.

Construction and parameters

The LZM1 circuit breaker has a lever as an actuator and frame terminals for connecting the main conductors located at the front of the device. The lack of a built-in motor drive and integrated earth fault protection makes it a basic but effective protective solution. The rated operating voltage is in the range of 690-690V AC, making it versatile in many applications. The lack of normally open or normally closed auxiliary contacts means a focus on the basic function of short-circuit and overload protection.