Schneider Masterpact Air Circuit Breaker

Feature & Principle

It is Schneider classic high-current air circuit breaker platform. Masterpact NT and NW are mature traditional models; MTZ is new digital generation. Adopts air arc extinguishing structure, matched with Micrologic trip unit to realize overload, short circuit, earth fault protection, energy measurement, fault recording and waveform capture. Drawout type has three working positions: connected, test and isolated, with mechanical interlock for maintenance safety. Supports Modbus, Ethernet communication to connect to power monitoring system, widely used in data center, factory, commercial building main switch cabinet.

Specifications

Model series: Masterpact NT / NW / MTZ Brand: Schneider Electric Current range: NT 630~1600A; NW 800~6300A; MTZ 630~6300A Pole: 3P / 4P Rated operational voltage: Up to 690V AC Trip unit: Micrologic 2.0 / 5.0 / 6.0 / 7.0 / Active Protection: LI, LSI, LSIG, earth fault protection Structure: Fixed / Drawout Breaking capacity: N1/H1/H2/H3/L1 different breaking grades Standard: IEC 60947-2 Application: Data center, industrial plant, commercial complex, hospital main distribution cabinet Certification: CE, UL, CCC

Components & Diagnostics

Main contact assembly, arc extinguishing chamber, Micrologic trip unit, spring charging mechanism, motor operating device, auxiliary contact, alarm contact, communication module. Common faults: spring charging failure, contact overheating, mis-trip, communication offline, trip unit failure.

Product Brief

Masterpact air circuit breaker, Schneider high current ACB spare widely used for main incoming cabinet and low voltage power distribution system overhaul and replacement.