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Caterpillar XQ300 Generator Set

The Caterpillar XQ300 is a 275 kW standby generator set powered by a Caterpillar 3456 ATAAC engine. It is available at 240 V, 480 V and 600 V, three phase-phase and 60 Hz. It holds about 38 L (10.0 gal) of oil and 64 L (16.9 gal) of coolant. The set measures 5080×1549×2827.3 mm (200.0×61.0×111.3 in), weighs about 6122 kg (13497 lb) and produces 74.85 dBA at 7 m. An integrated tank holds 1780 L (470.2 gal), roughly 29 hours of runtime.

275 kW
Standby
15.8 L
Displacement
38.0 L
Oil capacity
1
Document types

How to read your Caterpillar serial & model number →

Specifications

Frequency60.0 Hz
Standby power275 kW
EmissionsEPA Tier II and CARB Emissions Certified
Oil capacity38.0 L
AlternatorCaterpillar SR4B
Voltage options240 V, 480 V, 600 V
Phasethree phase
Circuit breaker[700, 350, 350, 50, 20, 20, 15, 30, 30] A
Coolant capacity64 L
Dimensions (L×W×H)5080×1549×2827 mm
Dry weight6122 kg
Sound level74.85 dBA @ 7 m
Fuel tank1780.0 L
Tank runtime29 hr

Engine

Caterpillar 3456 ATAAC
Oil capacity38.0 L
Coolant capacity64.0 L
Displacement15.8 L
Aspirationturbocharged-ataac
Rated speed1800 rpm

Maintenance & consumables

for the Caterpillar 3456 ATAAC
ItemSpecCapacityPart #Interval
Air filter10639735000 hr PartsGeek FridayParts $62.16
Fuel filter1200 hr find
Oil filter1200 hr find
Belt1200 hr find
CoolantCooling System
OilEngine lube oil capacity500 hr

Compatible filters for the Caterpillar 3456 ATAAC — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Fuel filter: Caterpillar 1165436 Caterpillar 5134490 Donaldson P550625 Donaldson P551858
  • Oil filter: Caterpillar 3890434 Caterpillar 2P4005 Donaldson P551808 Donaldson P554005 Ac Delco PF879L

Common questions

What is the power rating of the Caterpillar XQ300?

The Caterpillar XQ300 is rated 275 kW standby.

What engine does the Caterpillar XQ300 use?

The Caterpillar XQ300 is powered by the Caterpillar 3456 ATAAC engine.

What is the oil capacity of the Caterpillar XQ300?

The Caterpillar 3456 ATAAC engine in the Caterpillar XQ300 has an oil capacity of 38.0 liters.

What alternator does the Caterpillar XQ300 use?

The Caterpillar XQ300 uses a Caterpillar SR4B alternator.

Fuel consumption

RatingLoadL/hgal/h
Prime75%61.116.1
Standby84.522.3

Available documents

Spec sheet — LEHE1454-01 (Caterpillar)Spec sheet — XQ300-C9-T3 (Caterpillar)

Other sets with this engine