Complementary
[Icw] rated short-time withstand current	100 kA 1 s; 100 kA 3 s
[Icm] rated short-circuit making capacity	330 kA 220/415 V AC at 50/60 Hz; 330 kA 440 V AC at 50/60 Hz; 286 kA 525 V AC at 50/60 Hz; 220 kA 690 V AC at 50/60 Hz
Integrated instantaneous protection (DIN in kA peak)	243…297 kA
Sensor rating	3200 A; 6300 A
[Ui] rated insulation voltage	1000 V AC 50/60 Hz
[Uimp] rated impulse withstand voltage	12 kV
Power dissipation in W	1050 W
Maximum breaking time	25 ms
Maximum closing response time	80 ms
Mounting support	Backplate; Rails
Upside connection	Rear
Downside connection	Rear
Connection pitch	230 mm
Mechanical durability	10000 cycles with maintenance; 5000 cycles without maintenance
Electrical durability	1500 cycles 440 V AC 50/60 Hz without maintenance conforming to EN/IEC 60947-2; 1500 cycles 690 V AC 50/60 Hz without maintenance conforming to EN/IEC 60947-2; AC-23A: 1500 cycles 440 V AC 50/60 Hz without maintenance conforming to EN/IEC 60947-3; AC-23A: 1500 cycles 690 V AC 50/60 Hz without maintenance conforming to EN/IEC 60947-3; AC-3: 6000 cycles 440/690 V AC 50/60 Hz without maintenance conforming to EN/IEC 60947-3
Height	352 mm
Width	767 mm
Depth	297 mm
Net weight	120 kg
Standards	EN/IEC 60947-1; EN/IEC 60947-2
Product certifications	CE; CCC; EAC
Contractual warranty
Warranty (in months)	18
Environment
IP degree of protection	IP30 conforming to IEC 60529
Pollution degree	4 conforming to IEC 60664-1
Ambient air temperature for operation	-25…70 °C
Ambient air temperature for storage	-40…85 °C
Operating altitude	0...2000 m without derating; 2000 m...5000 m with derating
Main
Range	MasterPacT
Product name	MasterPact NW
Circuit breaker name	MasterPact NW63H2
Product or component type	Circuit breaker
Device application	Power distribution protection
Poles description	3P
Control unit	Without control unit
[In] rated current	6300 A at 40 °C
Performance type	H2 150 kA 440 V AC
[Ue] rated operational voltage	690 V AC 50/60 Hz
Suitability for isolation	Yes conforming to EN/IEC 60947-2
Selectivity category	Category B
Control type	Push-button
Mounting mode	Fixed
Packing Units
Unit Type of Package 1	PCE
Number of Units in Package 1	1
Package 1 Height	75.0 cm
Package 1 Width	75.0 cm
Package 1 Length	120.0 cm
Package 1 Weight	133.408 kg

MasterPact NT and NW is the proven generation of air circuit breakers up to 6300 A, which incorporate the latest technologies. The MasterPact NT and NW consists of 3 sizes, NT from 630 to 1600A, NW from 800 to 4000A and NWb from 4000 to 6300A. It can be configured in fixed installation or withdrawable design, as a circuit breaker or load breaker. The integrable protection and tripping device MicroLogic can be equipped with a wide range of functions and accessories. Air circuit breaker MasterPact NWb 6300A H2 Icu is 150kA at 440VAC 3P basic switch without Micrologic fixed installation The Masterpact can be ordered via the online configurator.