Model 3370RR Locomotive Starting Unit


The 3370RR is an American-made, larger version of the popular START PAC® 3324RR. This heavy-duty 72V mobile unit is designed for engines with up to 6000 horsepower or alternatively, for multiple daily locomotive engine starting requirements.


STARTING UNIT model reference3370RR
Battery typeLead acid
Voltage72 VDC
Peak Current1700 A
Cold start @ 0°F /−18°C810 CCA
Capacity @10 Amp Rate70 Ah
Total Weight444lbs / 201kg
Dimensions – Length x Width x Height55” x 23” x 33” 139,7 x 58,4 x 83,8 cm
Charger typeBuilt in
Float type charger input *Must be specified on order112 VAC 50/60 hertz 220 VAC 50/60 hertz
Charging time range1 to 9 hours

Reducing operating costs by improving safety and efficiency in the field, the 3370RR will directly start the locomotive engine when the locomotive battery is not sufficiently charged or capable of starting it.

The environmentally responsible, low VOC powder coating protects the case from wear, tear and poor weather conditions. Additionally, an all-weather cover accessory is also available as an option for this unit in order to protect it further from inclement weather to gain the maximum performance and product life.


All START PAC™ products come with a 1-year warranty on workmanship and materials.*

Please handle this unit in a responsible manner. START PAC™ is not responsible for damages caused by misuse or neglect.


Need Assistance?

START PAC offers a wide selection of power suppliesstarting units and combination Aircraft Ground Power Units (GPU). Browse our website to read about our extensive product line or visit our tutorial section to gain a more technical insight into our products. If you have a question or need help finding the right product for your aircraft, locomotive or vehicle, START PAC provides customer service support via phone and email. One of our friendly and knowledgeable experts will guide you to the product suited to your specific needs. If – for whatever reason – you are unhappy with your START PAC product, simply send return the unit to us for a full refund.

Why buy from START PAC®?

Made in the USA and developed with the latest state-of-the-art battery and power management technology, our products are trusted the world over. START PAC power supplies are built for heavy duty application and are designed to withstand all environments, however tough. START PAC boasts superior technical and after sales support thanks to our long standing industry experience and our passion for the industries in which we work. START PAC offers unparalleled value for money and fast global shipping via our international dealership network.

*Batteries are cycle-dependent and are therefore not covered under this warranty.