Schneider Electric MG24452 Molded Case Circuit Breaker

The Merlin Gerin MG24452 Circuit Breaker (Schneider Electric MG24452 Molded Case Circuit Breaker, MPN MG24452) is a 2-pole, 20 A thermal-magnetic protective device designed for DIN rail mounting in industrial and commercial power-distribution panels. Rated for 480Y/277 VAC and 50/60 Hz, it provides overcurrent and short-circuit protection for power circuits and connected equipment, including motors, machinery, HVAC systems, and lighting circuits in motor control centers, switchboards, and broader electrical distribution networks. This 2-pole unit uses a B-Curve trip characteristic and a DIN-rail mounting type to support efficient installation and maintenance in commercial and industrial facilities, consistent with IEC Industrial Protection Applications. The part number MG24452 is listed as the Manufacturer Part Number, and the device is suitable for electrical distribution systems across manufacturing plants, commercial buildings, and utility installations. Common replacements noted for this part include ABB S200 Series, Schneider Electric Multi 9, and Siemens 5SY Series.