Schneider Electric MG24520 Supplementary Protector

Schneider Electric MG24520 Supplementary Protector is a two-pole, 6‑amp thermal‑magnetic supplementary protector from the Square D/Multi9 MG family. It is UL 1077‑listed for supplementary protection and is designed to be installed in panel boards and control cabinets to provide short‑circuit and overload protection for branch circuits while primary protection remains with the main device. Rated for 480Y/277 VAC and 125 VDC, it employs a D‑trip curve to achieve selective fault clearance and has box‑lug terminals for secure wire connections, along with a lever for manual testing or reset. In Multi9 installations, it serves as an additional safeguard for circuits feeding automation equipment, sensors, relays, and other control electronics, ensuring rapid isolation of faults without interrupting adjacent circuits. The MG24520 is specifically intended as a supplementary protection device rather than a primary circuit breaker, and it complements other MG‑series protective components within Schneider Electric's industrial and commercial control equipment ecosystems.