As shown in the illustration, what is responsible for maintaining the "UV" relay energized when the master switch handle is moved away from the "off" position? EL-0102

Correct Answer: Option A — normally open 'UV' contacts

Undervoltage protection circuits utilize a holding seal-in circuit. Once the master switch is moved from off, normally open auxiliary UV relay contacts close in parallel with the start switch elements, maintaining relay coil energization until power fails or a stop is initiated.