Overcurrent circuit breaker, 1P, B characteristic, 40A, 6kA, AC | S201-B40 2CDS251001R0405

Overcurrent circuit breaker for protecting electrical installations.

This single-pole circuit breaker from ABB, model S201-B40, is a reliable device designed to protect electrical circuits from the effects of overloads and short circuits. A rated current of 40A combined with characteristic B makes it ideal for protecting installations with low inrush current, such as lighting or sockets. The breaking capacity of 6kA ensures effective and safe disconnection in the event of a failure.

This circuit breaker is widely used in both home and office installations, as well as in light industrial applications. Its compact design (1 module width) allows for efficient use of space in the distribution board. Mounting is done on a standard DIN TH35 rail, which simplifies and speeds up installation.

Advantages and characteristic features:

• Characteristic B: provides fast tripping for short circuits and delayed tripping for overloads – ideal for loads with short-term current peaks.
• Breaking capacity 6kA: guarantees effective disconnection of the circuit in the event of a short circuit, minimizing the risk of damage.
• Compact dimensions (1 module): saves space in the distribution board.
• DIN rail mounting: easy and quick installation.
• Protection class IP20: protection against finger contact and solid objects larger than 12mm. Can be increased to IP40 with an additional cover.
• Wide operating temperature range (-25°C to +55°C): can be used in various environmental conditions.
• Complies with EN 60898-1 standard: confirms the safety and reliability of the device.
• Conductor cross-section: allows connection of conductors with a cross-section from 0.75 mm² to 35 mm².

Construction and technical parameters:

The circuit breaker is made of high-quality insulating materials, which ensures safe use. It has a rocker lever with a clear on/off indicator, making it easy to operate. Two-way screw terminals provide a secure connection of the conductors. The device has energy limitation class 3 and surge category III, which affects its resistance to network disturbances. The rated insulation voltage is 440V, and the rated impulse withstand voltage is 4kV – this ensures safe operation of the device under various voltage conditions. Additionally, the circuit breaker is characterized by low power losses (4.8W), which translates into energy efficiency of the installation.