High current air circuit breakers for DC installations

MasterPact NW DC circuit breakers are equipped with MicroLogic DC control units that offer built-in adjustable instantaneous protection. One unique size covers applications from 1000 to 4000 A, with breaking capacity from 25 to 100 kA, depending on the time constant L/R and on the voltage level. The range comes with a wide choice of standardized accessories. The universal design of the MasterPact circuit breaker line allows most accessories to be used across the entire line. It enables standardization of electrical switchboards by providing peace of mind in terms of choice, installation, and operation.

Specifications

Rated current: 1000, 2000, and 4000 A
Breaking capacity: up to 85 kA at 900 V DC and L/R = 5 ms
Voltage rating: up to 900 V DC (switch disconnectors for PV application: up to 1000 V DC)
1 unique physical size
Draw out and fixed mount
3-pole – type C & D, and 4-pole – type E construction
MicroLogic DC control unit, offering built-in adjustable instantaneous protection, operating with electromagnetic sensors
Circuit breakers for the protection of power circuits and loads
Switch disconnectors for control circuit and disconnection
Optimized range of field-installable auxiliaries and accessories
Offer complying with different international standards: IEC 60947, UL489, ANSI/UL1066
Compliance with specifications of marine classification companies: Lloyd’s Register of Shipping

MasterPact 直流斷路器

直流斷路器，保護至高4000 A的直流系統