The SENTRON 5SN6106-7CN is a 1-pole miniature circuit breaker (MCB) with a C tripping characteristic, rated 6 A at 30 °C and breaking 6 kA per EN 60898 at 230/400 V AC. At 40 °C the continuous rating derates to 5.53 A, at 50 °C to 5.02 A, and at 55 °C to 4.75 A; if the panel ambient runs hot, size up or accept the lower headroom. Single-phase it handles 250 V AC; multi-phase operation (two or three poles ganged) is rated 440 V AC maximum. DC rating tops out at 72 V — fine for control-voltage DC bus work but not for a 125 V DC battery bank.
Mounting position is unrestricted — vertical, horizontal, or upside-down on the rail, the breaker operates the same. Touch protection is built in; no separate finger-safe shrouds needed.