Schneider Electric S33576 Current Transformer

Schneider Electric S33576 Neutral Current Transformer is an external sensor accessory for PowerPact P circuit breakers that provides neutral current monitoring for oversized neutral protection. With a 400 A to 1600 A primary current, this neutral CT translates the current in the neutral conductor into a proportional secondary signal for protection relays and meters, enabling ground-fault protection on Square D panelboards that require neutral current sensing. The unit ships with mounting hardware for straightforward installation and is part of Schneider Electric’s PowerPacT accessory lineup, designed for high-ampere installations where accurate neutral current monitoring is critical. By converting the high-current neutral flow into a manageable secondary signal, it supports protection coordination and can be used in schemes that rely on neutral current data. Note: Schneider Electric also lists a separate 100–250 A external neutral sensor variant under S33575, clarifying that S33576 covers the 400–1600 A range for PowerPact P applications.