Siemens 5SY6313-7CC — C-Curve 13 A, 3-Pole MCB for Panel Protection
The 3-pole design switches all three phases simultaneously, suitable for three-phase loads.
Rated current is temperature-dependent: 13 A at 35 °C, 12.22 A at 40 °C, 11.82 A at 45 °C, 11.39 A at 50 °C, and 10.95 A at 55 °C. In a warm enclosure (40–50 °C), expect effective rating to drop roughly 6–12% — factor this into cable and load sizing. Operating ambient range is -40 °C to 75 °C, with humidity limits: max 95% up to 55 °C, derating to 55% at 70 °C and 35% at 75 °C.
Mechanical Fit and Mounting
Depth is 76 mm (70 mm installation depth). Snap-on quick assembly system, mountable in any position. Combined top and bottom terminals simplify busbar and load wiring. Sealable design allows locking in the ON or OFF position for lockout/tagout compliance. Halogen-free and silicon-free construction meets clean-room and rail-vehicle material restrictions.
No official successor or replacement has been announced. The 5SY6313-7CC is a standard catalog item in the SENTRON 5SY series, widely used across industrial and commercial panel builds.