M9F12340

The M9F12340 is a Schneider Electric Multi 9 C60N miniature circuit breaker rated for 40A at 415V with 3 poles, designed to protect circuits and equipment in control panels, machines, and industrial distribution. With a breaking capacity of 10kA, it can safely interrupt the short-circuit currents found on typical industrial control circuits. It is a DIN rail modular breaker, so it fits neatly in a panel alongside other Multi 9 devices. The M9F12340 has a D curve, which means it tolerates the high inrush currents that motors, transformers, and similar loads draw at startup without nuisance tripping, while still responding quickly to a real short circuit. It uses a thermal-magnetic trip: the thermal element responds to sustained overloads, and the magnetic element trips almost instantly on a short circuit, at about 12 times the rated current. The Multi 9 C60N is part of Schneider Electric’s range of modular protection devices designed for OEMs and panel builders. Mechanically, the M9F12340 mounts on a standard DIN rail, and the Multi 9 range offers a wide selection of accessories, such as auxiliary contacts, shunt trips, and signaling devices, to adapt it to different configurations. Because the C60N is available in many ratings, curves, and pole counts, it is worth confirming the part number, trip curve, and rating against your application before ordering. This makes the M9F12340 a practical choice for panel builders, electricians, and maintenance teams who need to replace or add a D-curve breaker in a DIN rail panel and keep the equipment running. Purchase the M9F12340 at Electrical.com, your reliable partner for industrial and commercial electrical products. Our selection includes trusted miniature circuit breakers, panel components, and electrical products from manufacturers like Schneider Electric, Square D, Siemens, Eaton, and ABB, backed by a knowledgeable sales team ready to assist with technical questions, product selection, and support.