EasyPact NW control unit with Trip System 6.0E
The Schneider Electric ENW21429 is a microprocessor-based control unit for the EasyPact NW range of air circuit breakers, fitted with a Trip System 6.0E. It provides LSIG protection — overload (long-time), short-circuit (short-time and instantaneous), and earth-fault — across a trip unit rating of 800 to 4000 A, at a rated operational voltage of 690 V AC 50/60 Hz conforming to IEC 60947-2. The LSIG protection suite means this unit handles the full selectivity stack for industrial distribution: long-time pickup adjustable 0.4 to 1 x In across 9 settings, short-time pickup 1.5 to 10 x Ir (9 settings), instantaneous pickup 2 to 15 x In (9 settings, plus Off), and ground-fault pickup 0.2 to 1 x In for frames up to 1000 A, or 500 to 1200 x In above that. Zone selective interlocking (ZSI) is built in, so multiple breakers in a cascade can communicate fault direction and trim trip delays — critical for maintaining uptime on a switchboard bus. The digital display shows fault type (overload, earth fault, short-circuit, internal fault) and energy metering data — useful for power-quality logging without an extra panel meter.
Physical integration and wiring
Network frequency is 50/60 Hz. The long-time delay adjustment range is 0.5 to 24 seconds at 6 x Ir (accuracy 0 to -20%), short-time delay 100 to 400 ms.