Question 400Electricity & Electronics - QMED

The correct answer is A) low voltage protection. The 'MS 1' contacts of the master switch provide low voltage protection. This means they are designed to disconnect the electrical circuit if the voltage drops below a certain threshold, in order to prevent damage to the equipment from a loss of power. The other answer choices are incorrect because: B) high power factor correction is not the function of the MS 1 contacts, C) overload protection is a separate safety feature, and D) low voltage release is not a distinct concept from low voltage protection in this context.