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)	690 V AC
Position of Line Terminals	Back In - Back Out
Rated Current (In)	250 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	145 kW
Rated Operational Current AC21-A (Ie)	250 A
Rated Operational Current AC22-A (Ie)	250 A
Rated Operational Current AC23-A (Ie)	250 A
Rated Permanent Current (Iu)	250 A
Rated Permanent Current at AC-21, 400 V	250 A
Rated Short Time Withstand Current (Icw)	8 kA (1 s)
Power Loss	13 W/pole
Rated Frequency	50 / 60 Hz
Fuse Size	NH0, NH1
Mechanical Life	~16,000 operations
No. of Poles	3P
Housing Material	Reinforced thermoplastic
Padlock Locking	Yes (OFF position)
Depth	203 mm
Height	149 mm
Weight	3 kg
Width	208 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
Standards and Approvals	IEC 60947-3, CE, RoHS

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