Travel has resumed on the Confederation Line following delays caused by a pair of stalled trains, OC Transpo says.

The two light rail trains were halted at Rideau and Hurdman stations due to "tripped circuit breakers," said John Manconi, general manager of transportation services for the City of Ottawa, in an email.

"Both trains have been removed from the line and full service has been restored," Manconi wrote just before 4:30 p.m.

At around 2 p.m., the transit agency announced it was putting replacement buses into service between Rideau and Hurdman stations, warning riders that they should prepare for delays.

Soon afterward, OC Transpo said the disruption had been limited to the stretch between Rideau and Lyon stations.

Service was also halted between Blair and St-Laurent stations for about 30 minutes Friday afternoon because of a switch issue, but that was resolved around 3:15 p.m., OC Transpo said.

The service outage occurred while Ottawa was under a snowfall warning.

Manconi said the delays would be reviewed by both Rideau Transit Maintenance and JBA Corporation, a British consulting firm brought in to study the issues plaguing Ottawa's LRT system.