Mitsubishi Diesel Generator Sets 520–1800kW

Q: What is the fuel consumption of a Mitsubishi generator?

Mitsubishi generator fuel consumption is 196–221 g/kW·h at 75% load depending on engine family: the S6R2 series uses 196–203 g/kW·h, the S12R series 199–221 g/kW·h, and the S16R/S16R2 series 200–209 g/kW·h. The most efficient engine in the lineup is the S6R2-PTA at 196 g/kW·h, used in the R-JM (imported) series. In litres, Mitsubishi sets consume about 72.9 L/h at 520kW, 170.4 L/h at 1,200kW and 269.0 L/h at 1,800kW at 75% load. Figures are measured per ISO 3046-1 and vary about ±5% with ambient conditions and load profile; the power range table above lists L/h at 75% and 100% for every model.

Q: Which Mitsubishi series is right for my project — R-SM or R-JM?

Choose by origin requirement, lead time and price. Specify R-JM when the tender or the end user requires engines built in Japan; specify R-SM when the project allows Chinese production and cost is the priority — the engines are the same MHI design, built by SME in China with the "-C" suffix. Both series cover 520–1,800kW and are matched with Stamford or Leroy-Somer alternators and Deep Sea controllers. H&C also supplies Cummins, Perkins and MTU, so we can compare platforms for your load profile — send your kW, load profile and country.

Q: Are Mitsubishi generators suitable for hot climates and harsh sites?

Mitsubishi engines are factory-rated to 50°C ambient at ISO conditions, with a documented operating range of -30°C to 50°C — so no performance penalty applies in Middle East, African and tropical installations. The S6R, S12R and S16R designs use mechanical fuel injection, so there is no common-rail electronics to fail in high-temperature, high-humidity or high-dust conditions, and they accept wider variation in fuel quality. Starting performance is 10 seconds to full load with 100% single-step load acceptance. Tell us the site ambient temperature, altitude and fuel quality and we will confirm the derating curve for your configuration.

Q: What is the delivery time for a Mitsubishi generator set?

The lead time for a Mitsubishi generator set depends on which series you choose, the engine model, the quantity and the factory's current schedule. R-SM (China-built) and R-JM (imported) engines come from different production sources, so their lead times differ and are confirmed against the factory's current schedule rather than quoted as a fixed figure. Send the engine model and the quantity you need and we will confirm the current factory lead time for your order.

Factory-direct Mitsubishi generators 520–1,800kW. R-SM and R-JM series with genuine Mitsubishi Heavy Industries S6R, S12, and S16 engines. ISO 8528 certified. 50Hz. Japanese engineering — proven in extreme environments since 1917.

VIEW POWER RANGE ↓ GET A QUOTE →

Why Choose Mitsubishi Diesel Generators?

Mitsubishi Heavy Industries (MHI) engines deliver Japanese precision engineering with a low failure rate — MHI builds its own fuel pump, turbocharger and injectors. The S6R, S12R and S16R engine families are purpose-built for power generation, with an operating range of -30°C to 50°C.

H&C offers both the R-SM (SME) and R-JM (JM) Mitsubishi-powered series — from the S6R2 6-cylinder (520kW) to the S16R2 16-cylinder (1,800kW). JM is built in Japan; SM is built in the China joint venture with a "-C" model suffix — same models and technology. Each genset is paired with a Leroy-Somer or Stamford alternator and Deep Sea 7320 controller, assembled and load-tested at our manufacturing facility in Jiangsu, China.

For sites in the Middle East, Africa, and high-temperature regions, Mitsubishi is engineered for harsh conditions: 10-second start, 100% one-step load acceptance, and 300% momentary overload — specified for data-center designs targeting Uptime Institute Tier III/IV.

🇯🇵

Japanese Precision, Low Failure Rate

MHI builds its own fuel pump, turbocharger and injectors, and the engines use a cast-iron block, forged crankshaft and replaceable wet liners.

🌡️

High-Ambient Performance

-30°C to 50°C — built for Middle East and desert conditions, with high fuel efficiency from precision injection and MHI-matched turbocharging.

⚡

Strong Starting

10-second start, 100% one-step load acceptance and 300% momentary overload — specified for data-center designs targeting Uptime Institute Tier III/IV.

Mitsubishi Generator Power Range

R-SM & R-JM series — 21 models covering 520–1,800kW prime power. 50Hz / 400V / 0.8PF. Fuel consumption computed from g/kW·h per ISO 3046-1. R-JM dimension data pending verification — contact us for exact specs. Click Details → for R-SM verified specifications.

Model	Standby kW / kVA	Prime kW / kVA	Engine Model	Fuel L/h @75% / @100%	View
R-SM650D5/S	572 / 715	520 / 650	S6R2-PTA-C	93.8 / 125.0	Details →
R-JM650D5/S	572 / 715	520 / 650	S6R2-PTA	91.0 / 121.3	Details →
R-SM750D5/S	660 / 825	600 / 750	S6R2-PTAA-C	108.8 / 145.0	Details →
R-JM750D5/S	660 / 825	600 / 750	S6R2-PTAA	105.0 / 140.0	Details →
R-JM800D5/S	704 / 880	640 / 800	S12A2-PTA	126.3 / 168.4	Details →
R-JM900D5/S	800 / 1000	720 / 900	S12A2-PTA2	142.1 / 189.4	Details →
R-JM1000D5/S	880 / 1100	800 / 1000	S12H-PTA	147.1 / 196.2	Details →
R-SM1250D5/S	1100 / 1375	1000 / 1250	S12R-PTA-C	178.6 / 238.1	Details →
R-JM1250D5/S	1100 / 1375	1000 / 1250	S12R-PTA	197.3 / 263.1	Details →
R-SM1375D5/S	1210 / 1512	1100 / 1375	S12R-PTA2-C	195.4 / 260.6	Details →
R-JM1375D5/S	1210 / 1512	1100 / 1375	S12R-PTA2	217.1 / 289.4	Details →
R-SM1500D5/S	1320 / 1650	1200 / 1500	S12R-PTAA2-C	213.2 / 284.3	Details →
R-JM1500D5/S	1320 / 1650	1200 / 1500	S12R-PTAA2	223.9 / 298.6	Details →
R-JM1675D5/S	1452 / 1815	1320 / 1650	S16R-PTA	242.8 / 323.7	Details →
R-SM1650D5/S	1500 / 1875	1350 / 1650	S16R-PTA-C	244.7 / 326.2	Details →
R-SM1875D5/S	1650 / 2062	1500 / 1875	S16R-PTA2-C	269.2 / 358.9	Details →
R-JM1875D5/S	1650 / 2062	1500 / 1875	S16R-PTA2	277.2 / 369.6	Details →
R-SM2000D5/S	1760 / 2200	1600 / 2000	S16R-PTAA2-C	285.7 / 381.0	Details →
R-JM2000D5/S	1760 / 2200	1600 / 2000	S16R-PTAA2	294.3 / 392.4	Details →
R-SM2250D5/S	2000 / 2500	1800 / 2250	S16R2-PTAW-C	335.9 / 447.9	Details →
R-JM2250D5/S	1980 / 2475	1800 / 2250	S16R2-PTAW	335.9 / 447.9	Details →

Mitsubishi Generator Specifications by Power Rating

Detailed specs for 4 key Mitsubishi power ratings (R-SM series with verified dimensions). 50Hz. Find every available model in the complete power range table above.

📋 Buying & Service Guides

Plan your purchase and keep your generator running at peak performance with our complete, brand-independent guides.

Diesel Generator Buying Guide → Diesel Generator Maintenance Schedule →

Mitsubishi 520kW Diesel Generator

R-SM Series · S6R2 · 50Hz · Model: R-SM650D5/S

Standby Power	572 kW / 715 kVA
Prime Power	520 kW / 650 kVA
Engine Model	Mitsubishi S6R2-PTA-C
Alternator	Stamford S5L1D-F4 / Leroy-Somer TAL-A473-F
Fuel Consumption	93.8 / 125.0 L/h (@75% / @100%)
Fuel Efficiency	202 g/kW·h (ISO 3046-1)
Sound Level	≤75 dB(A) at 7m
Dimensions (Open / Silent)	3420×1550×2100 / 5030×1850×2510 mm
Weight (Open / Silent)	4000 / 5000 kg
Price (Indicative)	Request Quote →

Also covers: R-SM750D5/S (600kW) — S6R2-PTAA-C · R-JM650D5/S (520kW) · R-JM750D5/S (600kW) · R-JM800D5/S (640kW) · R-JM900D5/S (720kW). 6 models in this power bracket spanning R-SM and R-JM product lines.

💰 Operating Cost Estimate

Multiply fuel consumption by your local diesel price:

75% Load

93.8 L/h

100% Load

125.0 L/h

Operating cost = L/h × local diesel price (check your regional rate)
Example: at $1.0/L → 75% load costs ~$93.8/hr | 100% load costs ~$125.0/hr

🛢️ Maintenance Quick Reference

Oil Capacity

94L

SAE 15W-40 CH-4

Coolant Capacity

55L

50:50 EG + distilled H₂O

See Maintenance Schedule for full service intervals and Buying Guide for pre-order guidance.

Mitsubishi 1000kW Diesel Generator

R-SM Series · S12R · 50Hz · Model: R-SM1250D5/S

Standby Power	1,100 kW / 1,375 kVA
Prime Power	1,000 kW / 1,250 kVA
Engine Model	Mitsubishi S12R-PTA-C
Alternator	Stamford S6L1D-G4 / Leroy-Somer LSA 50.2 M6
Fuel Consumption	178.6 / 238.1 L/h (@75% / @100%)
Fuel Efficiency	200 g/kW·h (ISO 3046-1)
Sound Level	≤85 dB(A) at 7m (container)
Dimensions (Open / Silent)	4450×1850×2250 / 12192×2435×2896 mm
Weight (Open / Silent)	10000 / 11500 kg
Price (Indicative)	Request Quote →

Also covers: R-SM1375D5/S (1100kW) — S12R-PTA2-C · R-JM1000D5/S (800kW) · R-JM1250D5/S (1000kW) · R-JM1375D5/S (1100kW). 5 models spanning the 800–1,100kW range.

💰 Operating Cost Estimate

Multiply fuel consumption by your local diesel price:

75% Load

178.6 L/h

100% Load

238.1 L/h

Operating cost = L/h × local diesel price (check your regional rate)
Example: at $1.0/L → 75% load costs ~$178.6/hr | 100% load costs ~$238.1/hr

🛢️ Maintenance Quick Reference

Oil Capacity

180L

SAE 15W-40 CH-4

Coolant Capacity

150L

50:50 EG + distilled H₂O

See Maintenance Schedule for full service intervals and Buying Guide for pre-order guidance.

Mitsubishi 1,200kW Diesel Generator

R-SM Series · S12R-PTAA2 · 50Hz · Model: R-SM1500D5/S

Standby Power	1,320 kW / 1,650 kVA
Prime Power	1,200 kW / 1,500 kVA
Engine Model	Mitsubishi S12R-PTAA2-C
Alternator	Stamford S7L1D-C4 / Leroy-Somer LSA 50.2 L8
Fuel Consumption	213.2 / 284.3 L/h (@75% / @100%)
Fuel Efficiency	199 g/kW·h (ISO 3046-1)
Sound Level	≤85 dB(A) at 7m (container)
Dimensions (Open / Silent)	4850×2000×2450 / 12192×2435×2896 mm
Weight (Open / Silent)	10100 / 11600 kg
Price (Indicative)	Request Quote →

Also covers: R-SM1650D5/S (1350kW) — S16R-PTA-C · R-SM1875D5/S (1500kW) — S16R-PTA2-C · R-JM1500D5/S (1200kW) · R-JM1675D5/S (1320kW) · R-JM1875D5/S (1500kW). 6 models from the S12R-PTAA2, S16R, and R-JM families.

💰 Operating Cost Estimate

Multiply fuel consumption by your local diesel price:

75% Load

213.2 L/h

100% Load

284.3 L/h

Operating cost = L/h × local diesel price (check your regional rate)
Example: at $1.0/L → 75% load costs ~$213.2/hr | 100% load costs ~$284.3/hr

🛢️ Maintenance Quick Reference

Oil Capacity

180L

SAE 15W-40 CH-4

Coolant Capacity

125L

50:50 EG + distilled H₂O

See Maintenance Schedule for full service intervals and Buying Guide for pre-order guidance.

Mitsubishi 1800kW Diesel Generator

R-SM Series · S16R2 · 50Hz · Model: R-SM2250D5/S

Standby Power	2,000 kW / 2,500 kVA
Prime Power	1,800 kW / 2,250 kVA
Engine Model	Mitsubishi S16R2-PTAW-C
Alternator	Stamford S7L1D-H4 / Leroy-Somer LSA 52.3 L9
Fuel Consumption	335.9 / 447.9 L/h (@75% / @100%)
Fuel Efficiency	209 g/kW·h (ISO 3046-1)
Sound Level	≤85 dB(A) at 7m (container)
Dimensions (Open / Silent)	6050×2500×3200 / 12192×2435×2896 mm
Weight (Open / Silent)	15000 / 18000 kg
Price (Indicative)	Request Quote →

Also covers: R-SM2000D5/S (1600kW) — S16R-PTAA2-C · R-JM2000D5/S (1600kW) · R-JM2250D5/S (1800kW). The flagship S16R2 is the largest Mitsubishi engine at H&C, delivering 1,800kW prime with mechanical injection for harsh environments.

💰 Operating Cost Estimate

Multiply fuel consumption by your local diesel price:

75% Load

335.9 L/h

100% Load

447.9 L/h

Operating cost = L/h × local diesel price (check your regional rate)
Example: at $1.0/L → 75% load costs ~$335.9/hr | 100% load costs ~$447.9/hr

🛢️ Maintenance Quick Reference

Oil Capacity

230L

SAE 15W-40 CH-4

Coolant Capacity

170L

50:50 EG + distilled H₂O

See Maintenance Schedule for full service intervals and Buying Guide for pre-order guidance.

Mitsubishi Generator — Technical Data

Fuel Consumption

196 g/kW·h

Most fuel-efficient · S6R2-PTA @ 520kW (R-JM series)

S6R2 Series (6-cyl, 30L) 196–203 g/kW·h 520–600kW

S12R Series (12-cyl, 49L) 199–221 g/kW·h 800–1,200kW

S16R/S16R2 Series (16-cyl, 65–79L) 200–209 g/kW·h 1,350–1,800kW

Actual consumption @75% load (sample)

72.9 L/h
520kW

170.4 L/h
1200kW

269.0 L/h
1800kW

Measured per ISO 3046-1 at 75% load. Actual varies ±5% with ambient conditions and load profile. Mitsubishi mechanical injection engines tolerate fuel quality variations better than common-rail designs — a decisive advantage in regions where fuel sulfur content or cleanliness is uncertain.

Engineering & Configuration

H&C offers the full R-SM and R-JM range from 520kW to 1,800kW. For Middle East, Africa, and tropical climate projects, Mitsubishi is the brand we most frequently recommend — its 50°C ambient rating and mechanical injection eliminate the two most common causes of generator field failure. Contact us for a climate-specific recommendation.

Standards & Compliance

Factory Load Test (ISO 8528)

0% → 25% → 50% → 75% → 100% → 110%

Stepped load bank test on every unit. Reports available upon request.

CE ISO 9001 ISO 14001 ISO 8528-5

Factory Warranty: 12 months / 1,000 hours — full MHI factory warranty. Extended plans available upon request.

Frequently Asked Questions — Mitsubishi Generators

How much does a Mitsubishi diesel generator cost?+

A Mitsubishi generator set is priced by power rating, engine series and configuration. H&C builds Mitsubishi-powered sets from 520kW to 1,800kW in two series: R-SM, using engines built by Shanghai MHI Engine (SME), MHI's engine joint venture in China, and R-JM, using imported Japan-built engines. Because the two series come from different production sources, their prices differ — R-JM carries Japanese production and import costs, while R-SM is the more economical route for projects that do not specify a Japanese origin. Alternator choice (Stamford S5–S7 or Leroy-Somer TAL/LSA), enclosure (open skid, soundproof canopy or containerized) and controller options (Deep Sea DSE 8610 or DSE 7320 standard; ComAp and SmartGen optional) also affect the final price. Tell us the required kW, voltage and destination country, and we will confirm the R-SM or R-JM price within 24 hours.

What is the fuel consumption of a Mitsubishi generator?+

Mitsubishi generator fuel consumption is 196–221 g/kW·h at 75% load depending on engine family: the S6R2 series uses 196–203 g/kW·h, the S12R series 199–221 g/kW·h, and the S16R/S16R2 series 200–209 g/kW·h. The most efficient engine in the lineup is the S6R2-PTA at 196 g/kW·h, used in the R-JM (imported) series. In litres, Mitsubishi sets consume about 72.9 L/h at 520kW, 170.4 L/h at 1,200kW and 269.0 L/h at 1,800kW at 75% load. Figures are measured per ISO 3046-1 and vary about ±5% with ambient conditions and load profile; the power range table above lists L/h at 75% and 100% for every model.

Where are Mitsubishi generator engines manufactured?+

Mitsubishi generator engines reach H&C from two production sources. The R-JM series uses imported Mitsubishi engines built in Japan — the model code has no suffix (for example S6R2-PTA). The R-SM series uses engines built by Shanghai MHI Engine (SME), Mitsubishi Heavy Industries' engine joint venture in China — the model code carries the "-C" suffix (for example S6R2-PTA-C). Both are MHI-licensed designs on the same S6R, S12R and S16R architecture, with parts interchangeability above 85%, and both cover 520kW to 1,800kW. Tell us whether your project specifies a Japanese or a Chinese production origin and we will quote the matching series.

Which Mitsubishi series is right for my project — R-SM or R-JM?+

Choose by origin requirement, lead time and price. Specify R-JM when the tender or the end user requires engines built in Japan; specify R-SM when the project allows Chinese production and cost is the priority — the engines are the same MHI design, built by SME in China with the "-C" suffix. Both series cover 520–1,800kW and are matched with Stamford or Leroy-Somer alternators and Deep Sea controllers. H&C also supplies Cummins, Perkins and MTU, so we can compare platforms for your load profile — send your kW, load profile and country.

Are Mitsubishi generators suitable for hot climates and harsh sites?+

Mitsubishi engines are factory-rated to 50°C ambient at ISO conditions, with a documented operating range of -30°C to 50°C — so no performance penalty applies in Middle East, African and tropical installations. The S6R, S12R and S16R designs use mechanical fuel injection, so there is no common-rail electronics to fail in high-temperature, high-humidity or high-dust conditions, and they accept wider variation in fuel quality. Starting performance is 10 seconds to full load with 100% single-step load acceptance. Tell us the site ambient temperature, altitude and fuel quality and we will confirm the derating curve for your configuration.

What is the delivery time for a Mitsubishi generator set?+

The lead time for a Mitsubishi generator set depends on which series you choose, the engine model, the quantity and the factory's current schedule. R-SM (China-built) and R-JM (imported) engines come from different production sources, so their lead times differ and are confirmed against the factory's current schedule rather than quoted as a fixed figure. Send the engine model and the quantity you need and we will confirm the current factory lead time for your order.

GET MITSUBISHI QUOTE

Also available: Cummins · Perkins · MTU