It could be used for tasks like power distribution, providing protection against overloads and short - circuits in industrial or commercial setups, ensuring the safe and efficient operation of electrical equipment.
They could potentially have a rated voltage suitable for industrial or commercial applications, perhaps around 400V - 690V AC for three - phase systems. The "1200" in the model might refer to a capacity or rating, such as a current - handling capacity in amperes or a power - related rating in kVA. They are likely designed to meet safety and performance standards like IEC, UL, etc.