An energy-reducing maintenance switch (ERMS) function is available on some circuit breakers.

An energy-reducing maintenance switch (ERMS) function is available on some circuit breakers.

• A. True
• B. False
• C. Not specified
• D. Cannot be determined

Answer: (A)

ERMS is a feature on some circuit breakers that, when engaged, reduces the energy available to the circuit during maintenance. This helps limit arc-flash energy and other risks while work is performed without fully powering down the system. Because manufacturers do offer ERMS on certain breaker models, the statement is true: an energy-reducing maintenance switch function can be available on some circuit breakers. It’s not universal, so you’d verify the specific model’s documentation to confirm availability and usage.

ERMS is a feature on some circuit breakers that, when engaged, reduces the energy available to the circuit during maintenance. This helps limit arc-flash energy and other risks while work is performed without fully powering down the system. Because manufacturers do offer ERMS on certain breaker models, the statement is true: an energy-reducing maintenance switch function can be available on some circuit breakers. It’s not universal, so you’d verify the specific model’s documentation to confirm availability and usage.