The Siemens 5SJ3110-7 is a 1-pole miniature circuit breaker from the SENTRON 5SJ3 series, rated 10 A at 240 V AC with a C tripping characteristic.
The C-curve (tripping characteristic class C) means the magnetic trip activates at 5 to 10 times the rated current — 50 to 100 A for this 10 A breaker. That suits motor-starting and transformer inrush loads where a B-curve would nuisance-trip, but is faster than a D-curve for high-inrush equipment like welding sets. Overvoltage category 3 means it is rated for fixed-installation distribution boards, not for equipment-level protection. Energy limiting class 3 indicates it restricts let-through energy to a level that coordinates with downstream wiring and loads.
Panel integration
The 70 mm depth leaves clearance for wiring ducts and busbar covers in shallow enclosures. Accepts supply from either end (any power supply cord position).