qsb7-g3 generator

QSB7-G3 for Rental

Frequency (Hz) 60
Certification EPA Tier 3
Rated for kW kVa
Standby 150 188
Prime 135 169




This Cummins® rental package is a fully integrated mobile power generation system, providing optimum performance, reliability, and versatility for Standby and Prime power applications.

Engine model: QSB7-G3

Alternator data sheet: UCI274F (208/480), UCI274H (480/600 switchable)

Engine data sheet: DS-91910

Tier rating: TPEM (Tier III)

Design: 4 cycle, In-Line, turbocharged and after-cooled

Bore: 107 mm (4.21 in.)

Stroke: 124.0 mm (4.88 in.)

Displacement: 6.69 L (408 in3)

Cylinder block Cast iron, In-Line 6 cylinder

Battery capacity: 2 x 750 cca

Battery charging alternator: 100 Amps

Starting voltage: 12 volt, negative ground

Fuel system: Direct injection HPCR system

Fuel filter: Spin on fuel filter with water separator

Air cleaner: type 2-stage, dry replaceable element with dust ejector

Lube oil filter type(s): Single spin-on, full flow

Standard cooling system: 122 °F (50 °C) ambient radiator

Generator Model Hz Prime kVA / kW Standby kVA / kW Certification Spec Sheet
C150D6R 60 169 / 135 188 / 150 EPA Tier 3 S-1542

Cummins diesel engines

U.S. EPA Tier III compliant

Rugged 4-cycle industrial diesel engine with excellent transient performance

Lightweight, compact and excellent fuel economy

2-stage spin on fuel filter w/pre-filter water separator with drain

Equipped with heavy duty, 2-stage air cleaners with dust ejector

Control features

The most advanced, reliable and capable generator set control system on the market today

Controls provide precise frequency and voltage regulation, alarm and status message display in one easy to operate customer interface

Remote monitoring and operation ready

Auto shutdown at fault detection

Engine controls

Oil Pressure and Water Temp Gauge

Fuel Level Gauge & Battery Voltage Gauge

Hour meter

Stamford alternators

12-lead reconnectable alternators fitted with voltage selection switch

Permanent magnet excitation for improved performance in non-linear load applications

Rental package enclosure

Sound attenuated, white powder coated lockable enclosure

Roof mounted, single point lift

Cooling system rated for 120 °F (50 °C) ambient

Complete engine fluid containment reservoir

Shore power (120 VAC) - No breakers in shore power connection.

Standard generator electrical features

Single phase convenience receptacles

Distribution panel with L1, L2, L3 Neutral and


Main Line shunt trip type circuit breaker

Auto start-stop with remote contacts

Over current sensing

3 available auxiliary connections

Generator electrical options

Multiple voltage selector switch (480/277 VAC/3 phase or 208/120 VAC/3 phase or 240/120 VAC/ 1 phase)

600/480 V switchable

Barrel lug connection

Cam lock distribution panel

Heated HMI

Additional rental package features

Tank style coolant heater

Low coolant shutdown system

Battery disconnect switch

Base mount generator – see Options for trailers

Rental package options

DOT approved electric brake trailer with heavy duty center mounted jack, ball or pintle hitch

DOT approved hydraulic brake trailer with heavy duty center mounted jack, ball or pintle hitch

110 V, 5 Amp battery charger

25 hour fuel tank (100% Prime) with gauge

Transport Canada UN31A compliant fuel tank

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