The MGN25131 is a C60H miniature circuit breaker from the Multi9 range, rated 16 A at 50 °C per EN/IEC 60947-2. That makes it a standard pick for motor branch circuits, transformers, and other inductive loads where the start-up surge exceeds what a C curve would tolerate. Breaking capacity is 30 kA Icu at 240 V AC phase-to-phase, 15 kA at 415 V, and 10 kA at 440 V — all conforming to EN/IEC 60947-2.
The fixed mounting mode and 54 mm width (3-pole, 6 x 9 mm pitches) mean it occupies three module spaces. Depth is 73 mm, height 81 mm, so it fits shallow enclosures without gland-plate interference. IP20 rated — suitable for dry indoor panels only. That's typical for control cabinets in factory environments without climate control.
