Specifications

Product Type Fuse switch disconnector	Brand ABB	Series OS400D
Application Isolation and protection in low-voltage distribution systems (industrial/commercial feeders, motor circuits)

Max. Rated Operation AC Voltage (Ue) 690 V AC	Position of Line Terminals Top in / Bottom out or reverse	Rated Current (In) 400 A
Rated Impulse Withstand Voltage (Uimp) 12 kV	Rated Insulation Voltage (Ui) 1000 V	Rated Operating Voltage 690 V AC
Rated Operation Power at AC-23, 400 V 220 kW	Rated Operational Current AC21-A (Ie) 400 A	Rated Operational Current AC22-A (Ie) 400 A
Rated Operational Current AC23-A (Ie) 400 A	Rated Permanent Current (Iu) 400 A	Rated Permanent Current at AC-21, 400 V 400 A
Rated Short Time Withstand Current (Icw) 14 kA (1s)	Power Loss 36 W	Rated Frequency 50 / 60 Hz
Fuse Size NH0, NH1, NH2	Mechanical Life ~16,000 operations	No. of Poles 3P
Switches Operating Mechanism 12 (Between the Poles)

Housing Material

Reinforced thermoplastic

Padlock Locking

Yes (OFF position)

Depth 193 mm	Height 230 mm	Weight 6.72 kg
Width 255 mm

Rated Surrounding Temperature without Derating 40 °C	Pollution Degree 3	Storage Temperature -40 °C to +70 °C
Operating Temperature -25 °C to +55 °C	IP Rating IP20

IEC 60947-3, CE, RoHS

ABB OS400D12P Switch Fuses 3-P 400A For: NH0 1000VAC 400 kW Lug Terminal IP65