Specifications

Product Type Fuse Switch Disconnector	Brand ABB	Series OS250D
Application Isolation and protection in low-voltage distribution systems (industrial / commercial feeders, motor circuits)

Max. Rated Operation AC Voltage (Ue) 690V AC	Position of Line Terminals Back In - Back Out	Rated Impulse Withstand Voltage (Uimp) 12kV
Rated Insulation Voltage (Ui) 1000V	Rated Operating Voltage 690V AC	Rated Operation Power at AC-23, 400 V 145kW
Rated Operational Current AC21-A (Ie) 250A	Rated Operational Current AC22-A (Ie) 250A	Rated Operational Current AC23-A (Ie) 250A
Rated Permanent Current at AC-21, 400 V 250A	Rated Short Time Withstand Current (Icw) 8kA (1 s)	Rated Uninterrupted Current (Iu) 250A
Power Loss 13W/pole	Rated Current (In) 250A	Rated Frequency 50/60Hz
Fuse Size NH0, NH1	Mechanical Life ~16,000 operations	No. of Poles 3P

Housing Material

Reinforced thermoplastic

Padlockable

Yes (OFF position)

Depth 203mm	Height 149mm	Weight 3kg
Width 208mm

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

Standards and Approvals

IEC 60947-3, CE, RoHS

ABB OS250D12BBP Switch Fuses 3-P NH0 NH1 250A Main Circuit 690VAC 250 kW Lug Terminal