Siemens 5SY4640-8


The Siemens 5SY4640-8 is a miniature circuit breaker designed for reliable protection in electrical installations. Rated for 40 amps and suitable for 3-pole plus neutral configurations, this breaker supports systems up to 400 volts. It features a D-curve tripping characteristic, making it well-suited for controlling moderate inrush currents, such as those from motors or transformers. The compact design measures 70 mm in width and is intended for easy installation on a DIN rail. This model is available through BSP Automation, offering an efficient solution for safeguarding your electrical network.
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