Overcurrent circuit breaker K60N-B40-1 B 40A 1-pole A9K01140

Overcurrent circuit breaker – reliable protection for electrical installations

This single-pole circuit breaker from the K60 series, with a rated current of 40A and B characteristic, is a key element ensuring safety in every electrical installation. Designed for both professional installers and end-users, it offers effective protection against overloads and short circuits. The B characteristic means that the breaker reacts quickly to current increases, but is also resistant to short-term surges, which is particularly important when connecting devices with motors or other elements generating inrush current.

The K60N-B40-1 breaker is perfect for circuits with a rated voltage of 230V. Its compact dimensions (1 module width) allow for efficient use of space in the distribution box. The rated short-circuit breaking capacity Icn of 6kA guarantees safety in the event of serious disturbances in the network. Made of high-quality materials, it ensures long-lasting and reliable operation.

Construction and mounting features:

• Universal mounting: The breaker is designed for mounting on standard TH35 rails, making it easy to integrate with existing systems. The K60 series is compatible with any fork rail available on the market – a major advantage for installers.
• Wire cross-sections: Supports both solid (0.5 - 35 mm²) and stranded (0.5 - 25 mm²) wires, providing flexibility in choosing the appropriate cross-section for a given circuit.
• Degree of protection: IP20 class provides protection against finger contact and against the ingress of solid objects larger than 12.5 mm – standard protection for devices mounted inside distribution boxes.
• Durability: The rated impulse withstand voltage Uimp is as high as 4kV, which indicates high resistance to overvoltages.
• Temperature range: Trouble-free operation in a wide range of ambient temperatures (-25°C to +70°C) allows the breaker to be used in various environmental conditions.

Application and compliance with standards:

The K60N-B40-1 breaker is used in electrical installations in residential, commercial and industrial buildings where overcurrent protection of 40A is required. It meets the requirements of EN 60898 standard, which guarantees its safety and compliance with applicable regulations. The energy limitation class is 3, and the surge category is 2 – parameters important in the design of surge protection systems. Thanks to its solid construction and precise workmanship, this breaker provides a reliable protection of the electrical installation against the effects of overloads and short circuits.