Electrical Gems #152 | Page 43

Safe Reliable Powerful NZM-S1 Moulded Case Circuit Breakers for 1000 VAC applications NZM-S1 Moulded Case Circuit Breakers for 1000 VAC applications, completes the NZM range for sectors where higher network voltages are present. Tested according to IEC60947 the NZM-S1 covers from 20A to 1600A with Icu/Ics values up to 20/15kA at 1000VAC. Trip units are segregated for Selectivity and Motor Protection with electronic and thermal magnetic versions. Switch Disconnector versions are also available. The NZM-S1 range is suitable for use in rugged environmental conditions such as mines, road tunnels, refineries, chemical plants and railways. Typical applications include protection of drives for high performance and general industrial power distribution networks with long supply lines. The NZM-S1 utilizes the same suite of accessories as the standard range of NZM Moulded Case Circuit Breakers. Circuit-breakers and Switch-disconnectors Technical overview for NZM...-S1 Switching capacity 1000 VAC System and cable protection kA/p.f. Selectivity protection Motor protection Icu 10/0.5 15/0.5 20/0.3 10/0.5 20/0.3 15/0.5 20/0.3 Ics 3/0.5 10/0.5 15/0.3 3/0.5 15/0.3 10/0.5 15/0.3 Iu Iu Iu Iu Iu Iu Iu NZMH2-A...-S1 NZMH3AE...-S1 NZMH4AE...-S1 NZMH2-VE...-S1 NZMH4-VE...-S1 NZMH3ME...-S1 NZMH4-ME...-S1 20 250 630 100 630 220 550 25 400 800 160 800 350 875 32 650 1000 250 1000 450 1400 Rated uninterrupted current Iu = Rated current In 40 1250 1250 50 1600 1600 63 80 100 125 160 200 250 With main switch characteristics to IEC/EN 60204 and isolating characteristics to EC/EN 60947, VDE 660 300 www.eatoncorp.com.au