What low voltage might be found in a motor starter bucket as an auxiliary?

• A. 120 volts
• B. 24 volts
• C. 277 volts
• D. 480 volts

Answer: (B)

The key idea is that motor starter buckets separate the high-power motor circuit from a low-voltage control circuit. The auxiliary side is designed to run control devices—pushbuttons, relays, indicators—safely, using a low voltage supply. In practice, 24 volts (usually 24 VAC) is the standard control voltage fed to the starter’s coil and related controls. This keeps control wiring and components safe and simple, while the motor itself operates at higher voltages such as 480V or other line voltages in the system. So 24 volts is the typical low-voltage auxiliary found in a motor starter bucket.