The MGN60623 is a Schneider Electric C60H miniature circuit-breaker from the Multi9 range, rated 3 A at 50 °C with a C-curve trip characteristic. The C-curve means the magnetic trip fires at 5 to 10 times rated current — here, 8.5 x In ±20 % — so it handles moderate inrush from motor starters or small transformers without nuisance tripping, yet clears a hard short fast. The 2-pole configuration protects both lines in a single-phase DC or split-phase AC circuit; the part is also isolation-rated per EN/IEC 60947-2, so it doubles as a service disconnect. Breaking capacity hits 30 kA Icu at 240 V AC phase-to-phase, dropping to 15 kA at 415 V AC and 10 kA at 440 V AC. That 30 kA figure is high for a 3 A frame; it gives headroom in high-fault panels without stepping up to a larger case size.
The 73 mm depth and 81 mm height fit standard distribution boards and sub-panels. The toggle gives local ON/OFF indication and a contact position indicator confirms the state of the moving contacts. Earth-leakage protection is handled by a separate block, so you can add an RCD module downstream without swapping the breaker.