Complementary
[Ui] rated insulation voltage	800 V AC 50/60 Hz
[Uimp] rated impulse withstand voltage	8 kV
[Ics] rated service breaking capacity	85 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2; 80 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2; 75 kA at 660/690 V AC 50/60 Hz conforming to IEC 60947-2
Mechanical durability	15000 cycles
Electrical durability	12000 cycles at 440 V In/2; 6000 cycles at 440 V In; 6000 cycles at 690 V In/2; 3000 cycles at 690 V In
Power dissipation per pole	19.2 W
Mounting support	Backplate
Mounting position	Horizontal and vertical; Flat on the back
Upside connection	Front
Downside connection	Front
Connection pitch	45 mm
Protection type	L : for overload protection (long time); So : for short time short-circuit protection with fixed delay; I : for instantaneous short-circuit protection
Trip unit rating	320 A at 65 °C
Motor tripping class	20; 10; 5
Complementary motor protection	Phase unbalance
Long-time pick-up adjustment type Ir (thermal protection)	Adjustable 9 settings
[Ir] long-time protection pick-up adjustment range	160...320 A
Long-time protection delay adjustment type tr	Fixed
[tr] long-time delay adjustment range	120 s at 1.5 x Ir for trip class 5; 6.5 s at 6 x Ir for trip class 5; 5 s at 7.2 x Ir for trip class 5; 240 s at 1.5 x Ir for trip class 10; 13.5 s at 6 x Ir for trip class 10; 10 s at 7.2 x Ir for trip class 10; 480 s at 1.5 x Ir for trip class 20; 26 s at 6 x Ir for trip class 20; 20 s at 7.2 x Ir for trip class 20
Thermal memory	20 minutes before and after tripping
Short-time protection pick-up adjustment type Isd	Adjustable 9 settings
[Isd] Short-time protection pick-up adjustment range	5...13 x Ir
Short-time protection delay adjustment type tsd	Fixed
Instantaneous protection pick-up adjustment type Ii	Fixed
[Ii] instantaneous protection pick-up adjustment range	4800 A
Earth-leakage protection	Without
Zone selective interlocking ZSI	Without
Number of slots	6 slot(s)
Local signalling	Flashing LED (green) for ready to operate; LED 95 % Ith (red) for temperature over set point
Width (W)	140 mm
Height (H)	255 mm
Depth (D)	110 mm
Net weight	6.05 kg
Contractual warranty
Warranty (in months)	18
Environment
Standards	EN/IEC 60947-2
Overvoltage category	III
Electrical shock protection class	Class II on front face
Pollution degree	3 conforming to IEC 60664-1
IP degree of protection	IP40 conforming to IEC 60529
IK degree of protection	IK07 conforming to IEC 62262
Ambient air temperature for operation	-25…70 °C
Ambient air temperature for storage	-50…85 °C
Relative humidity	0…95 %
Operating altitude	0...2000 m without derating; 2000 m...5000 m with derating
Logistical informations
Country of origin	FR
Main
Range	ComPacT
Product name	ComPacT NSX
Device short name	NSX400HB1
Product or component type	Circuit breaker
Device application	Motor protection
Poles description	3P
Protected poles description	3D
[In] rated current	320 A at 65 °C
[Ue] rated operational voltage	690 V AC 50/60 Hz
Network type	AC
Network frequency	50/60 Hz
Suitability for isolation	Yes conforming to EN/IEC 60947-2
Utilisation category	Category A
Breaking capacity	85 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2; 80 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2; 75 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2
Breaking capacity code	HB1 75 kA 690 V AC
Trip unit name	MicroLogic 2.3 M
Trip unit technology	Electronic
Trip unit protection functions	LSoI
Control type	Toggle
Circuit breaker mounting mode	Fixed
Packing Units
Unit Type of Package 1	PCE
Number of Units in Package 1	1
Package 1 Height	16.000 cm
Package 1 Width	16.000 cm
Package 1 Length	29.000 cm
Package 1 Weight	5.775 kg
Unit Type of Package 2	S04
Number of Units in Package 2	2
Package 2 Height	30.000 cm
Package 2 Width	40.000 cm
Package 2 Length	60.000 cm
Package 2 Weight	12.200 kg
Unit Type of Package 3	P12
Number of Units in Package 3	8
Package 3 Height	45.000 cm
Package 3 Width	80.000 cm
Package 3 Length	120.000 cm
Package 3 Weight	60.800 kg

This ComPacT NSX400HB1 is a complete 3P 3d fixed circuit breaker designed to optimize space and breaking capacity. It is an optimal choice for motor protection applications. The breaking capacity (Icu) is 85 kA rms at 500 VAC 50/60 Hz and 75 kA rms at 690 VAC 50/60 Hz. The operating voltage is 690 VAC 50/60 Hz. This product features a MicroLogic 2.3 M electronic trip unit with a rating of 320 A. The MicroLogic 2.3 M trip unit offers adjustable long and short time protection functions and fixed instantaneous protection. This 3-pole version (140 mm x 255 mm x 110 mm) is supplied with a wide range of optional features and accessories. It is compliant with international standards (IEC 60947), CCC, EAC and marine specifications. ComPacT NSX400HB1 is part of Schneider Electric's EcoStruxure Power architecture.