Schneider Electric MGN61321 Molded Case Circuit Breaker

Schneider Electric's MGN61321 is a 2-pole Miniature Circuit Breaker from the Multi9 C60 family. It is a 20 A unit with a C-curve trip characteristic, engineered for 480Y/277 VAC operation and UL489 listing, delivering up to 10 kA Icu. As part of the Merlin Gerin/Square D heritage within the Multi9 system, the MGN61321 protects distribution circuits in commercial and light industrial panels that use 480Y/277 V supplies. This 2-pole device provides overcurrent protection for general purpose circuits on 480Y/277 VAC installations, and is identified by the MGN61321 part number. When selecting compatible equipment, ensure the panel supports Multi9 C60 breakers and that the enclosure and bus connections match the Multi9 C60 form factor. The combination of a 20 A rating, fast C-curve response, and a high 10 kA interrupting capacity helps balance reliable protection with minimal nuisance tripping for typical lighting, receptacle, and small-motor feeder circuits in higher-voltage commercial environments.