SJ Ma

Specifications
Specifications
Configuration:;
• UIC	Co′Co′
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Wheel diameter	1,300 mm (51.18 in)
Length	16,800 mm (55 ft 1+3⁄8 in)
Height	4,500 mm (14 ft 9+1⁄8 in)
Loco weight	104.4 tonnes (102.8 long tons; 115.1 short tons)
Electric system/s	15 kV 16.7 Hz AC Catenary
Current pickup	Pantograph

Type and origin
Type and origin
Power type	Electric
Builder	ASEA
Build date	1953-1960
Total produced	41

Ma
Ma
	Ma 405 pulling a copper train at Mjölby in 2007
Power type
Type and origin
Power type	Electric
Builder	ASEA
Build date	1953-1960
Total produced	41
Configuration:;
Specifications
Configuration:;
• UIC	Co′Co′
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Wheel diameter	1,300 mm (51.18 in)
Length	16,800 mm (55 ft 1+3⁄8 in)
Height	4,500 mm (14 ft 9+1⁄8 in)
Loco weight	104.4 tonnes (102.8 long tons; 115.1 short tons)
Electric system/s	15 kV 16.7 Hz AC Catenary
Current pickup	Pantograph
Maximum speed
Performance figures
Maximum speed	100 km/h (62 mph)
Power output	3,960 kW (5,310 hp)
Tractive effort	376 kN (85,000 lbf)
Operators
Career
Operators	Statens Järnvägar, Trafikaktiebolaget ; Grängesberg–Oxelösunds Järnvägar

The SJ Class Ma is an electric locomotive used by Swedish State Railways (Swedish: Statens Järnvägar, SJ) and later other railways. 41 units were built by ASEA between 1953 and 1960. It is derived from the older Mg-series, but unlike its predecessor it is used for freight and passenger trains. It is also the longest serving locomotive in Sweden.