The Siemens 5SL7450-7RC is a 4-pole miniature circuit breaker rated for 415 V AC with a 15 kA breaking capacity and a C-curve trip characteristic at 50 A.
The 4-pole configuration (3 phases + neutral) and 415 V rating match standard three-phase distribution panels in European and IEC markets. The 50 A C-curve is a common main breaker or feeder size for sub-distribution boards.
Panel Integration
Snap-on DIN rail mounting for standard 35 mm rail in the enclosure. The 4-pole width (4 modules at 18 mm each) occupies 72 mm of rail space — factor that into your DIN-rail fill count alongside other 5SL series breakers and accessories.