Which of the following is a heavy-duty DC push-button rating?

• A. 1.1 Amps, 120 Volts
• B. 0.55 Amps, 230 Volts
• C. 0.2 Amps, 550 Volts
• D. 0.8 Amps, 24 Volts

Answer: (A)

Heavy-duty DC push-button ratings are about how much current the switch can safely carry in a DC circuit. DC arcs are harder to interrupt than AC, so a higher current rating at DC signals a more robust contact design capable of handling heavier loads. Among the options, 1.1 A at 120 V DC shows the greatest current-carrying capability at a practical control-voltage level, indicating a true heavy-duty rating. The other choices pair lower currents with higher voltages or lower voltages with modest current, which are less indicative of heavy-duty capability.