Siemens 5SY41 C5 Molded Case Circuit Breaker

Siemens 5SY41-C5 Molded Case Circuit Breaker is a single-pole protective device in the 5SY41 family, rated for 277 VAC and 5 A with a C-type trip curve. As a molded case circuit breaker (MCCB), it provides overcurrent protection for branch circuits and is suitable for protecting lighting and other 277 VAC loads in commercial panels. The C-type characteristic delivers a balanced response to short circuits with moderate inrush, aligning with typical lighting and small-load applications where fast yet forgiving tripping is desired. This compact device is designed for reliable isolation and safe maintenance within a panel or enclosure, and is commonly used in Siemens protection architectures that include other protection devices. Key specifications include: voltage rating 277 VAC, nominal current 5 A, single-pole configuration, and trip curve type C. For correct integration, verify compatibility with your panel’s mounting method and regional electrical standards, and consider coordinating with upstream protection to achieve selective coordination in the distribution network.