The Siemens 5SL5110-7RC is a 1-pole SENTRON miniature circuit breaker (MCB) with a C tripping characteristic, rated 10 A at 220 V DC and a breaking capacity of 10 kA. It is designed for DC circuits in residential and infrastructure installations, occupying a single 18 mm modular width unit on a DIN rail.
DC rating and what it means for fit
The 220 V DC rating is the key figure for DC applications — unlike AC-rated MCBs that derate significantly on DC, this unit is specified for DC circuits up to that voltage. The 10 kA breaking capacity handles fault currents typical of sub-distribution boards.
Physical integration and environment
At 18 mm wide and 76 mm deep, it fits standard 1-module DIN-rail slots.