The C1642G160 is a MicroLogic 2.2 G electronic trip unit from the Schneider Electric ComPacT NSX100...250 range, designed specifically for generator protection in AC networks at 50/60 Hz. Rated 160 A at 40 °C with a 4-pole configuration (3D + N/2, 4D, or 3D neutral protection selectable), it provides LSoI protection: long-time overload (L), short-time short-circuit with fixed delay (So), and instantaneous short-circuit (I). The long-time pickup (Ir) is adjustable from 63 to 160 A across nine settings, while the short-time pickup (Isd) adjusts from 1.5 to 9 x Ir. Instantaneous pickup (Ii) is fixed at 2400 A.
Generator protection specifics
The 'G' suffix in MicroLogic 2.2 G indicates generator protection tuning. Local signaling includes a flashing green LED for ready-to-operate, a red LED at 105% Ir for overload, and an orange LED at 90% Ir for pre-alarm — useful for commissioning and fault isolation without opening the panel.
The C1642G160 is classified as obsolete per the manufacturer's lifecycle status. No official successor order code is listed in the manufacturer's records.
Installation and environment
Fixed-mount design for ComPacT NSX circuit breaker frames. Pollution degree 3 per IEC 60947-1 means it tolerates conductive pollution in industrial control panels — typical for factory-floor environments without climate control.