As shown in figure "6" of the illustration, what does the symbol represent as used in electrical drawings? EL-0026

Correct Answer: Option A — maintaining type push button with a mechanical interlock

The depicted symbol denotes a maintained-type push button equipped with a mechanical interlock, preventing simultaneous engagement of opposing circuits. IEEE 45 and marine engineering drawing standards require clear identification of interlocking mechanisms to ensure safe operation of reverse-isolation motor starters.