Square D MG17411 Miniature Supplementary Protector

Square D MG17411 is a single‑pole miniature circuit breaker configured as a supplementary protector within Schneider Electric's Multi9 C60 family. The device is rated for 0.5 A and 277 V AC (50/60 Hz), delivering overcurrent protection for small loads and control circuits in equipment assemblies. This 1‑pole unit features a C‑curve trip characteristic and carries a 10 kA interrupting rating, with UL 1077 recognition and IEC 60947‑2 compatibility described by official product listings. The MG17411 designation identifies the 1P, 0.5 A model in the Square D/Multi9 range, designed as a supplementary protector for electrical equipment. Typical applications include protecting relays, control panels, and instrumentation circuits where compact, UL 1077‑listed protection is required in 277 V systems.