Complementary
[Icu] rated ultimate short-circuit breaking capacity	100 kA Icu at 500 V DC L/R = 5 ms; 25 kA Icu at 900 V DC L/R = 30 ms; 35 kA Icu at 900 V DC L/R = 15 ms; 50 kA Icu at 500 V DC L/R = 30 ms; 50 kA Icu at 750 V DC L/R = 15 ms; 50 kA Icu at 750 V DC L/R = 30 ms; 85 kA Icu at 500 V DC L/R = 15 ms; 85 kA Icu at 750 V DC L/R = 5 ms; 85 kA Icu at 900 V DC L/R = 5 ms
[Ics] rated service breaking capacity	100 kA at 500 V DC (L/R = 5 ms); 25 kA at 900 V DC (L/R = 30 ms); 35 kA at 900 V DC (L/R = 15 ms); 50 kA at 500 V DC (L/R = 30 ms); 50 kA at 750 V DC (L/R = 15 ms); 50 kA at 750 V DC (L/R = 30 ms); 85 kA at 500 V DC (L/R = 15 ms); 85 kA at 750 V DC (L/R = 5 ms); 85 kA at 900 V DC (L/R = 5 ms)
[Icw] rated short-time withstand current	85 kA 1 s
[Icm] rated short-circuit making capacity	100 kA L/R = 5 ms 500 V DC; 25 kA L/R = 30 ms 900 V DC; 35 kA L/R = 15 ms 900 V DC; 50 kA L/R = 30 ms 500 V DC; 50 kA L/R = 15 ms 750 V DC; 50 kA L/R = 30 ms 750 V DC; 85 kA L/R = 15 ms 500 V DC; 85 kA L/R = 5 ms 750 V DC; 85 kA L/R = 5 ms 900 V DC
Sensor rating	4000 A
[Ui] rated insulation voltage	1000 V DC
[Uimp] rated impulse withstand voltage	12 kV
Power dissipation in W	4000 W
Maximum breaking time	30…75 ms
Maximum closing response time	70 ms
Mounting support	Backplate; Rails
Upside connection	Rear
Downside connection	Rear
Connection pitch	150 mm
Mechanical durability	10000 cycles without maintenance conforming to IEC 60947-2; 20000 cycles with maintenance conforming to IEC 60947-2
Electrical durability	2000 cycles 500 V DC without maintenance conforming to IEC 60947-2; 1000 cycles 900 V DC without maintenance conforming to IEC 60947-2
Height	439 mm
Width	556 mm
Depth	594 mm
Net weight	125…146 kg
Standards	IEC 60947-2
Product certifications	ASEFA; ASTA
Contractual warranty
Warranty (in months)	18
Environment
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
Logistical informations
Country of origin	FR
Main
Range	MasterPacT
Product name	MasterPact NW DC
Circuit breaker name	MasterPact NW40HDC-E
Product or component type	Circuit breaker
Device application	DC voltage switching
Poles description	4P
Control unit	Without control unit
[In] rated current	4000 A at 40 °C
Performance type	H 85 kA 500 V DC
[Ue] rated operational voltage	500/900 V DC
Suitability for isolation	Yes conforming to EN/IEC 60947-2
Selectivity category	Category B
Control type	Push-button
Mounting mode	Drawout
Packing Units
Unit Type of Package 1	PCE
Number of Units in Package 1	1
Package 1 Height	0.1 cm
Package 1 Width	0.1 cm
Package 1 Length	0.2 cm
Package 1 Weight	172.284 kg

MasterPact NW-DC is the proven generation of air circuit breakers up to 4000 A, which are designed for direct current networks and contain the latest technologies. The MasterPact NW-DC is available for operating currents of 1000A, 2000A and 4000A at an operating voltage of 500VDC (type N) up to max. 900VDC (type H). It can be configured as a fixed installation or withdrawable device, as a circuit breaker or load-break switch. The integrable protection device MicroLogic 1.0 can be equipped with a variety of functions and accessories. Masterpact NW40HDC-D 4000A 4P basic switch withdrawable device without Micrologic The withdrawable cassette is always included with the Masterpact NW-DC in withdrawable technology