"Our people have a range of skills in high demand during lengthy firefighting operations," Mr O'Connor said.
"These include logistics, planning, finance, ferrying supplies into remote locations and the use of aircraft."
The deployment followed a request from the Canadian Interagency Forest Fire Centre earlier this week.
About 800,000 hectares of forest are burning across the states of Alberta, Saskatchewan and British Colombia, as well as in neighbouring Alaska.
New Zealand previously lent support to Canadian authorities in 2009 during a serious outbreak of wildfires.
Firefighters from New Zealand have also helped to stamp out blazes in Australia nine times and in the United States five times in the past 15 years.