Monitoring the Circuit Breaker Service Life

Presentation

The service life indicator helps anticipate the replacement of the breaking block before mechanical or electrical breakdown. Circuit breaker service life depends on the daily number of operating cycles with or without current. For more information about the service life and the maximum number of operating cycles, refer to MasterPacT MTZ with MicroLogic X Control Unit - Catalog.

Operating Principle

Each time the circuit breaker operates (performs an open and close cycle with or without current), the corresponding mechanical and electrical operating counters are incremented. Based on these counters, the MicroLogic X control unit calculates two service life ratios as a percentage of the maximum number of mechanical and electrical operations. The highest ratio is taken into account to indicate the percentage of lifetime remaining for the circuit breaker.

When the MicroLogic X control unit service life algorithm calculates a value which is below one of the predefined thresholds (20% and 0%), an event is generated with an orange or red pop-up screen and corresponding event message.

Data Availability

Service life monitoring data is available as follows:

On the MicroLogic X display screen at Home > Maintenance > Health > Circuit breaker
With EcoStruxure Power Commission software
With the EcoStruxure Power Device app through Bluetooth or USB OTG connection
On the FDM128 display
On the FDM121 display
On a remote controller using the communication network

Predefined Events

Service life monitoring generates the following events:

Code	Event	History	Severity
0x1443 (5187)	Remaining service life of circuit breaker is below alarm threshold	Diagnostic	Medium
0x1444 (5188)	Circuit breaker has reached the max number of operations	Diagnostic	High

Recommended Actions

Code	Event	Recommended actions
0x1443 (5187)	Remaining service life of circuit breaker is below alarm threshold	Plan to replace the circuit breaker. To refine the service life calculation by taking into account environmental parameters, you can ask for aging diagnostics. If the device is cloud connected, use EcoStruxure Asset Advisor for remote aging diagnostics. Otherwise, contact Schneider Electric services for local aging diagnostics.
0x1444 (5188)	Circuit breaker has reached the max number of operations	Replace the circuit breaker.

Code

Event

Recommended actions

0x1443 (5187)

Remaining service life of circuit breaker is below alarm threshold

Plan to replace the circuit breaker.

To refine the service life calculation by taking into account environmental parameters, you can ask for aging diagnostics. If the device is cloud connected, use EcoStruxure Asset Advisor for remote aging diagnostics. Otherwise, contact Schneider Electric services for local aging diagnostics.

0x1444 (5188)

Circuit breaker has reached the max number of operations

Replace the circuit breaker.

Contact Schneider Electric Support or your Schneider Electric Services representative for more information about who can carry out the recommended actions.