Southwest Product Changes - Same Great Service

The Novel Coronavirus (COVID-19) is having an immense impact in our communities.
Our primary concern is for the safety of our team members and customers.
Currently, we are operating as normal except for in-person training (tentatively suspended until August).
We continue to monitor the situation at all of our locations and will provide updates as necessary.

QP 625 Generators

No Worries

Depend on the reliable power solutions we provide for whatever comes your way.

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QP 625 Generators


Southwest Products’ Quiet Power 625 generators provide reliable primary and standby power for large construction, rental, and commercial applications. These robust mobile diesel generators use reliable Perkins Tier 2/FLEX diesel engines and a digital controller to monitor the unit while providing continuous operating data.

Standby Rating: 625 kVA / 500 kW
Prime Rating: 569 kVA / 455 kW
  • SWP Tough Series TG410 digital genset controller
  • Multi-voltage switch with utility outlet power in 120/208 mode
  • Single point lift
  • Custom branding options available
  • Heavy duty, 4-cycle, direct injection, turbo charged diesel engine

Download PDF Spec Sheet

Contact our team or call 602-269-3581 for more information.

Download PDF Spec Sheet

Technical Specifications

Model QP 625
Available Voltages 120/208 | 277/480
Standby Rating kVa/kWe 625 kVA / 500 kWe
Prime Rating kVa/kWe 569 kVA / 455 kWe
Engine Model 2506C-E15TAG3
Alternator Marathon

Engine Specifications

Engine Mfg Perkins
Model Number 2506C-E15TAG3
Spec # MGDF7129
Prime Output HP (Gross) 664
Standby Output HP (Gross) 728
Emissions Certification Tier 2/Flex

Fuel Specifications

Fuel Tank Capacity 500 gal
50% Load 20.3
75% Load 25.4
100% Load 34.9

Alternator Specifications

Available Voltages 120/208 | 277/480
277/480 Volt Prime Amps PF .08 684.9
277/480 Volt Standby Amps PF .08 752.7
120/208 Volt Prime Amps PF .08 1580.6
120/208 Volt Standby Amps PF .08 1736.9
120/240 Volt Prime Amps PF 1.0
120/240 Volt Standby Amps PF 1.0

Enclosure Specifications

Length – Enclosure Only 208″
Width 72″
Height 91″
Weight – Dry 15,300 lbs
Length with Trailer 301″
Width with trailer 102″
Height with Trailer 117″
Weight with Trailer 19,880 lbs
Weight Ready to Run 23,500 lbs
Sound dBA level at 23ft. 75 dBA


Reliable, Sturdy, and Environmentally Friendly

  • Robust construction
  • Heavy duty, 4-cycle, direct injection, turbo charged diesel engine
  • Oversized alternator with PMG for better motor starting
  • Heavy gauge, powder coated, lockable enclosure
  • Dual containment fuel cell with environmental containment basin

Extremely Quiet and Fuel Efficient

  • Sound attenuation for superior noise reduction
  • EPA Tier 2 FLEX certified
  • Electric fuel system and governor control
  • Large capacity fuel cell for extended run time

Easy to Use Connection and Service Points

  •  Digital engine/generator controller with redundant analog gauges/meters
  • Multi-voltage switch with utility power in 120/208 mode
  • Bus bar and utility outlets for customer connections
  • SWP Tough Series TG410 digital genset controller
  • Single point lift

Download PDF Spec Sheet


QP 625 Legacy Models

Models No Longer In Production

To ensure our products meet current emission standards, plus incorporate new features and technology, we regularly update products and offer new models. This tab is used to provide information on older QP 625 models.

  • Legacy model content coming soon
  • Legacy model content coming soon
  • Legacy model content coming soon

If you need further assistance with our legacy models, please contact Product Support.

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