Motor starter with thermal and electromagnetic trip unit with neutral conductor N M250 (4A - 6.3A) 606808

Motor protection – reliability and safety

The M250 motor starter is a key element in protecting electrical installations powering motors. It provides comprehensive protection against the effects of short circuits and overloads, protecting both the motor and the other elements of the circuit. The design with a thermal and electromagnetic release guarantees a quick and effective response in emergency situations. This model, with a setting range of 4-6.3A, is particularly useful in applications requiring precise protection selection.

Construction and application

M250 circuit breakers are designed to protect circuits where significant transient loads may occur during normal operation. Various versions are available – with a thermal release only, an electromagnetic release, or a combination of both. This model is equipped with a neutral (N) terminal, which increases its functionality and range of applications. A window on the housing allows for clear labeling of the protected circuit, making identification and servicing of the installation easier. The device is 45 mm wide and 72.5 mm deep – dimensions that allow for easy mounting in standard distribution boards.

Key features and benefits

• Versatile application: ideal for protecting electric motors in various industrial and domestic applications.
• Dual protection: the combination of a thermal and electromagnetic release provides comprehensive protection against overloads and short circuits. Characteristic C allows it to react more slowly to short current surges, therefore it tolerates starting devices with a motor well.
• High breaking capacity: rated short-circuit breaking capacity at 6 kA at 400 V AC guarantees effective disconnection of the circuit in the event of a short circuit.
• Easy installation: screw connection of the main contacts facilitates connection of the wires.
• Durable construction: complete device in a housing ensures reliable operation for a long time. Protection class IP3X protects against access to live parts and against environmental influences (e.g. dust).
• Compliance with standards: the product meets applicable safety standards, ensuring safe operation of the electrical installation.
• Efficiency: rated operating power for AC-3 is 7.5 kW at 400 V and 4.5 kW at 230 V, allowing it to be used in demanding applications.
• Clarity: a window for describing the installation makes it easier to identify the function of the circuit breaker and the protected circuit - saves time during inspections and maintenance of the electrical installation.

The M250 circuit breaker is characterized by a rated continuous current (Iu) of 6.3 A and a setting range for the overload release from 4 to 6.3 A. The setting range for the short-circuit release is from 70.6 to 105.9 A, and the rated operating voltage is 230…500 V. The rated operating power for AC-3 is 7.5 kW at 400 V and 4.5 kW at 230 V.

The M250 circuit breaker is a solid and reliable solution for every installer and end user looking for effective protection of their electrical devices.