Siemens 5SY6640-8

The Siemens 5SY6640-8 is a 40-amp circuit breaker designed for reliable electrical protection in industrial applications. This three-pole plus neutral device operates at up to 400 volts and features a breaking capacity of 6 kA, ensuring effective interruption of fault currents. Its compact design with a 70 mm depth and screw terminals allows for straightforward installation on standard DIN rails. The 5SY6640-8 also serves as a direct replacement for the earlier 5SY4640-8 model. This circuit breaker is available through BSP Automation, offering a dependable solution for managing electrical circuits safely and efficiently.