Use of six AW139s comes under a 10-year contract with Ambulance Victoria, part of the Avincis Group, provides mission-critical helicopter support for emergency medical services, search and rescue, surveillance operations and law enforcement.
AgustaWestland said the helicopters will enter service in the state of Victoria in 2016, operating from four airports.
The aircraft can carry 15 people. It has a maximum speed of 193 mph, a range of 675 miles and an endurance of nearly six hours.
The cockpit of the aircraft features a fully integrated avionics package, a 4-axis digital AFCS and large flat panel color displays.
More than 200 government and commercial entities have ordered the aircraft.
Additional details of the contract between AgustaWestland and Ambulance Victoria were not disclosed.