Square D MG24135 Supplementary Protector

Square D MG24135 Supplementary Protector is a two-pole, 25-amp thermal-magnetic protection device designed for 277/480 VAC service. As part of Square D by Schneider Electric's MG-series, this supplementary protector provides localized overload and short-circuit protection for downstream loads or control circuits within 480Y/277 VAC systems. The 2-pole configuration covers both conductors of the protected circuit, and the Type B trip curve indicates the device's characteristic response to overcurrent events, suitable for typical control circuit protection in commercial and industrial environments. The MG24135 is intended to be used alongside a main overcurrent device to achieve coordinated protection, safeguarding equipment such as relays, contactors, and motor starters in 277/480 VAC installations. This protection device helps maintain system reliability in applications like control panels, switchgear assemblies, and distribution panels that rely on 480/277-volt power.