Specifications

Product Type	Changeover Switch
Brand	ABB
Series	OT125
Application	Commercial buildings, Industrial plants, Data centers
Max. Rated Operation AC Voltage (Ue)	750 V AC
Position of Line Terminals	Top In - Bottom Out, Bottom In - Top Out
Rated Current (In)	125 A
Rated Impulse Withstand Voltage (Uimp)	8 kV
Rated Insulation Voltage (Ui)	750 V
Rated Operating Voltage	415 V
Rated Operation Power at AC-23, 400 V	45 kW
Rated Operational Current AC21-A (Ie)	125 A
Rated Operational Current AC22-A (Ie)	125 A
Rated Operational Current AC23-A (Ie)	90 A
Rated Permanent Current (Iu)	125 A
Rated Permanent Current at AC-21, 400 V	125 A
Rated Short Time Withstand Current (Icw)	2.5 kA/1s
Power Loss	6.3 W/Pole
Rated Frequency	50 - 60 Hz
Transition Type	Open
No. of Poles	4P
Depth	86 mm
Height	100 mm
Weight	1.4 kg
Width	193 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, IEC 60947-1, CSA, CE, RoHS, REACH

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