Mitsubishi

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Mitsubishi S12R-Y2PTAW-1

Engines

Mitsubishi S12R-Y2PTAW-1 diesel engine. 49L V-12, turbocharged. Powers 1125-1280 kW commercial generators.

Overview#

The Mitsubishi S12R-Y2PTAW-1 is a 49-liter, 12-cylinder v-12 diesel engine used in commercial and industrial generator applications in the 1125-1280 kW class. Turbocharged for reliable power density across standby and prime-rated duty cycles.

This engine powers generators from Blue Star Power Systems, Generac, Kohler, making it one of the more widely deployed prime movers in its power class for the commercial standby market.

Generators using this engine#

Found in these gensets

Generator models that ship with or are commonly paired with the Mitsubishi S12R-Y2PTAW-1.

Blue Star Power Systems Blue Star MD1250-01 1.3 MW liquid-cooled standby generator

Blue Star Power Systems

Blue Star MD1250-01

Open Basler controller + Mitsubishi V12 engine + Stamford alternator — no proprietary lock-in. Serviceable by any qualified tech, not just the dealer.

1.3 MW standby · Diesel · Liquid-cooled

1250 kW Tier 2 diesel standby generator built by Blue Star Power Systems. Mitsubishi S12R-Y2PTAW-1 49.0L V12 engine, Stamford S6L1D alternator, DSE DCP7310 controller. Three-phase, 208–4160V.

Tier 23-phaseindustrialmunicipal
Generac Generac SD1250 1.3 MW liquid-cooled standby generator

Generac

Generac SD1250

1250 kW industrial diesel with Mitsubishi engine. Competitive pricing vs CAT/Cummins. Paralleling for multi-MW systems.

1.3 MW standby · Diesel · Liquid-cooled

1,250 kW standby diesel generator with Mitsubishi S12R-Y2PTAW-1 49.0L V12 engine. EPA Tier 2 certified. Three-phase 277/480V and 346/600V. UL2200 listed.

Tier 23-phasecommercial-standbyindustrial-standby
Kohler Kohler 1250REOZMD 1.3 MW liquid-cooled standby generator

Kohler

Kohler 1250REOZMD

1280 kW diesel standby -- Mitsubishi S12R-Y2PTAW-1, sub-3% THD. Decision-Maker controller for load management and paralleling.

1.3 MW standby · Diesel · Liquid-cooled

1280 kW diesel industrial generator powered by Mitsubishi. Mission-critical standby for data centers, hospitals, and large commercial facilities.

Tier 23-phasedata-centerhealthcare

Need service for the Mitsubishi S12R-Y2PTAW-1?

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