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Caterpillar XQ350 Specs (Power | Consumption)

Written by Ernie Lo in Specs Last Updated August 18, 2026

The Caterpillar XQ350 generator is listed with standby output of 350 kW, Diesel fuel, 50 Hz operation, 4 available voltage configurations, Three phase, and sound level of 74 dBA @ 3 ft (1 m).

Caterpillar Generator Specifications

Generator • Diesel • 50 Hz • Three phase

Standby power: 350 kWVoltage options: 4 configurationsDry weight: 32,798 lb (14,877 kg)

Key specifications

350 kW Standby power
Diesel Fuel
4 configurations Voltage options
Three phase Phase
32,798 lb (14,877 kg) Dry weight
74 dBA @ 3 ft (1 m) Sound level
50 Hz Frequency

Useful generator charts

Charts are shown only when this model has enough usable source data.

Power-to-weight
Standby output per 1,000 lb of dry weight compared with a fixed industry reference for this output class.
This model

10.7 kW

Typical reference

43 kW

Low for this output class
Power output
Low 280 kW High 350 kW
Standby

350 kW

Prime

280 kW

Model spec snapshot
Representative numeric specifications from this generator.
350 kWStandby
32,798.17 lbWeight
74 dBASound

How the Caterpillar XQ350 compares

Low, Typical and High are fixed generator-industry reference bands set by standby-output class. They do not change based on the models contained in this CSV.

Standby power
350 kW
Typical range
Typical: 275 kW
Dry weight
32,798 lb
High range
Typical: 7,011 lb
Sound level
74 dBA
Typical range
Typical: 75 dBA
Oil capacity
10.57 gal
Typical range
Typical: 11.89 gal
Standby power350 kW · Typical
Low 150 kWTypical 275 kWHigh 400 kW

Falls within the typical industry reference range for generators in this standby-output class.

Dry weight32,798 lb · High
Low 2,998 lbTypical 7,011 lbHigh 13,999 lb

Falls toward the high end of the fixed industry reference range for generators in this standby-output class.

Sound level74 dBA · Typical
Low 64 dBATypical 75 dBAHigh 86 dBA

Falls within the typical industry reference range for generators in this standby-output class.

Oil capacity10.57 gal · Typical
Low 4.76 galTypical 11.89 galHigh 30.38 gal

Falls within the typical industry reference range for generators in this standby-output class.

This model Typical industry reference

Generator information

Manufacturer Caterpillar
Model XQ350
Generator type Generator
Fuel Diesel
Frequency 50 Hz

Electrical output

Standby power 350 kW
Prime power 280 kW
Voltage options 208 V, 240 V, 440 V, 480 V
Phase Three phase

Engine, cooling and controls

Engine model Caterpillar 3406B
Engine displacement 891 cu in (14.6 L)
Aspiration / cooling Turbocharged & Turbocharged-Aftercooled
Rated engine speed 1800 rpm
Engine oil capacity 9.01 gal (34.1 L)
Engine coolant capacity 27.5 gal (104.1 L)
Oil capacity 10.6 gal (40 L)
Coolant capacity 23 gal (87 L)
Maximum ambient 61 / 58.2 °C

Physical specifications

Dry weight 32, 798 lb (14, 877 kg)
Dimensions (L × W × H) 312 × 96 × 147 in (7925 × 2438 × 3734 mm)
Sound level 74 dBA @ 3 ft (1 m)

Fuel system and runtime

Fuel tank 400 gal (1, 514 L)
Tank runtime 27 hr

Fuel consumption

Prime 40.2 L/h @ 75%; 53.2 L/h @ 100%

Disclaimer: Specifications should be verified against the official owner’s or service manual and confirmed on the Caterpillar USA website.

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Ernie Lo

Ernie Lo is a qualified web designer and web developer. He works as an IT support technician and website manager at Benleigh Vending, and he also fixes vending machines.

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