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Alstom Prima H4

SBB Aem 940 in July 2021 at Landquart

The Prima H4 is a dual-power shunter that won a tender by SBB in 2015 to replace old four- and six-axle diesel and electric shunters. Although it was developed in Belfort, France, it has much in common with the H3 fro...

General

Property Alstom Prima H4
Bi-Mode electric
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Built seit 2018
Manufacturers Alstom
Wheel arrangement B-B
Gauge 1,435 mm (Standard gauge)

Dimensions and weights

Property Alstom Prima H4
Bi-Mode electric
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Length 18.75 m
Service weight 90 t
Adhesive weight 90 t
Axle load 22.5 t
Fuel capacity 3,000 l (Diesel)

Power plant

Property Alstom Prima H4
Bi-Mode electric
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Engine Caterpillar C18
Engine type 2x 6-cyl. diesel

Power

Property Alstom Prima H4
Bi-Mode electric
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Power source electric - AC + diesel-electric
Electric systems 15.000 V 16,7 Hz, 25.000 V 50 Hz
Continuous power 2,000 kW (2,719 PS)
Indicated power 900 kW (1,224 PS)
Top speed 120 km/h
Starting effort 300.0 kN

Calculated values

Property Alstom Prima H4
Bi-Mode electric
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Factor of adhesion 1 : 2.94
Power-to-weight ratio 22.2 kW/t
Adhesive weight/Total 1 : 1.00
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