Replacing the Internal Battery (MicroLogic 6.0)

The internal battery powers the trip cause indication LEDs on a MicroLogic 6.0 trip unit.

The internal battery of the MicroLogic trip unit can be replaced on site when discharged.

Order a new battery in its housing cover with the Schneider Electric catalog number 33593.

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS or local equivalent. This equipment must only be installed and serviced by qualified electrical personnel. Turn off all power supplying this equipment before working on or inside this equipment. Always use a properly rated voltage sensing device to confirm power is off. Put back all devices, doors, and covers before turning on power to this equipment. Beware of potential hazards, and carefully inspect the work area for tools and objects that may have been left inside the equipment. Failure to follow these instructions will result in death or serious injury.

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS or local equivalent.
This equipment must only be installed and serviced by qualified electrical personnel.
Turn off all power supplying this equipment before working on or inside this equipment.
Always use a properly rated voltage sensing device to confirm power is off.
Put back all devices, doors, and covers before turning on power to this equipment.
Beware of potential hazards, and carefully inspect the work area for tools and objects that may have been left inside the equipment.

Failure to follow these instructions will result in death or serious injury.

Follow this procedure to replace the internal battery:

Remove the circuit breaker front cover as directed in the circuit breaker instruction sheet.
Remove the battery and its housing cover: insert a small screwdriver blade into battery housing cover notch and rotate to slide battery housing cover out of trip unit.
@Writer: image shared in MTZ MicroLogic B and NS MicroLogic Basic user guides.
Put the new battery and its housing cover back in place.
@Writer: image shared in MTZ MicroLogic B and NS MicroLogic Basic user guides.
Press the Test/Reset button to check the new battery.

Reinstall the circuit breaker front cover as directed in the circuit breaker instruction sheet.

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Put back circuit breaker front cover before energizing circuit breaker to help prevent access to live terminals. Do not pinch the wires when reinstalling the front cover. Failure to follow these instructions will result in death or serious injury.