Technical Parameters
Parameter Description / Value
Product Series ABB OS Series (Rotary Isolating Switch)
Device Type Switch-Disconnector, Load Break Switch
Number of Poles 2 Poles (2P)
Rated Operational Current (Ie) 32 A
Rated Operational Voltage (Ue) Up to 690 V AC
Rated Impulse Withstand Voltage (Uimp) 6 kV
Utilization Category AC-22A / AC-23A (Suitable for switching mixed resistive and inductive loads, such as motor loads).
Rated Making & Breaking Capacity At 400V AC: Typically 10 x Ie (320A) for making, 8 x Ie (256A) for breaking. (Must confirm with official data)
Mechanical Durability Typically > 20,000 operating cycles (no load).
Electrical Durability Typically > 10,000 operating cycles at rated current.
Terminals Screw clamp terminals, suitable for solid and stranded conductors.
Mounting DIN Rail Mounting (35mm, EN 60715).
Control Manual rotary handle (0°=OFF, 90°=ON).
Safety Features Padlocking facility in OFF position (up to 3 padlocks).
Standards IEC/EN 60947-3, IEC/EN 60947-1
Ambient Temperature -25°C to +60°C (operation)
The ABB OS32D12 is a 32 Ampere, Double-Pole (2P) Rotary Isolating Switch (Switch-Disconnector) from the ABB OS Series. It is a manual, load-breaking switching device designed primarily for safe isolation of electrical circuits. Its core function is to provide a visible, reliable "off" position to de-energize equipment for maintenance or repair, while also being capable of making and breaking load currents under normal operating conditions.