The reference for locomotives and railcars


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New Zealand Railways class EF
originally class 30
New Zealand | 1986 | 22 produced
30232 and 30226 in November 2010 en route from Feilding to Halcombe
30232 and 30226 in November 2010 en route from Feilding to Halcombe
Cody Cooper

In the early 1980s, electrification of a 255-mile section of the North Island Main Trunk (NIMT) began to increase train weights and speeds on the topographically challenging line. So the most powerful locomotives in New Zealand were built at Brush in Great Britain. They were initially plagued by many problems with the transformers.

From 2006 they were equipped with AAR couplers to be able to pull heavier trains. The withdrawals began in 2016, but this changed relatively quickly. Now, in the interest of environmental protection, further sections of the NIMT will be electrified and twelve of the remaining EF class locomotives will be modernized. The first of these went back into service in 2022.

ManufacturerBrush Traction
Axle configB-B-B 
Gauge3 ft 6 in (Cape gauge)
Dimensions and Weights
Length64 ft 3 5/8 in
Service weight235,894 lbs
Adhesive weight235,894 lbs
Axle load39,315 lbs
Power sourceelectric - AC
Electric system25,000 V 50 Hz
Continuous power4,023 hp (3,000 kW)
Power Plant
Calculated Values
electric locomotive
last changed: 02/2024

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