Siemens 5SY6163-7 SENTRON 5SY6 Miniature Circuit Breaker 1P C-curve 63 A 6 kA. Siemens 5SY6163-7 miniature circuit breaker from the SENTRON 5SY6 range. Official Siemens listing: Miniature circuit breaker 230/400 V 6kA, 1-pole, C, 63 A, D=70 mm. Key details: Voltage rating: 230/400 V, Breaking capacity: 6 kA, Poles: 1P, Trip curve: C, Rated current: 63 A, Installation depth: 70 mm. Suitable for low-voltage distribution boards, industrial control panels, maintenance replacement, and OEM panel-building projects.