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55 kW Triton Diesel Generator TP-P55-T3-UL Tier 3 – UL Listed
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  • 6 technical documentsspec sheet, engine data, alternator data, brochure
60 Hz USA EPA Tier 3 UL2200

55 kW Triton Diesel Generator TP-P55-T3-UL Tier 3 – UL Listed

SKU TP-P55-T3-UL

Standby rating

57 kW 71 kVA

Prime rating

51 kW 64 kVA

Engine
Perkins 1104D-44TG1
Alternator
Leroy Somer LSA42.3L9
Control panel
Deep Sea DSE 7420
Fuel
Diesel
Frequency / phase
60 Hz · 3-phase
Voltages listed
120/208 · 277/480
Configuration
Enclosed · Open Skid
Fuel tank
Not specified

Market compatibility

USA EPA-certified

Tier 3 EPA Certified — Emergency Stationary Applications · Tier 3 – UL Listed

Need help with voltage, frequency or sizing? Talk to a generator specialist or call +1 251-314-4812.

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Overview

Product overview

The TP-P55-T3-UL is a 71 kVA / 57 kW standby, 64 kVA / 51 kW prime diesel generator, EPA-certified for the US market.

It uses a Perkins 1104D-44TG1 engine, a Leroy Somer LSA42.3L9 alternator and a Deep Sea DSE 7420 control panel.

It is listed at 60 Hz, 3-phase, with voltages 120/208 and 277/480, in enclosed or open skid configurations.

  • Powered by Perkins 1104D-44TG1
  • Emissions: Tier 3 EPA Certified — Emergency Stationary Applications
  • 60 Hz Power Rating, 3-Phase
  • Standby Power Rating: 71 kVA / 57 kW
  • Prime Power Rating: 64 kVA / 51 kW
  • Leroy Somer Alternator
  • Deep Sea DSE 7420 Control Panel
  • UL2200 Listed
Read the full product description

Global Generator Supply provides Emergency Stationary generators certified to Tier 4i, Tier 3, and Tier 2 ratings, with UL2200, CSA, and other compliance options. Triton can build virtually any generator to spec — gaseous or diesel — and we maintain ready stock of generators built to standard configurations for immediate shipment, along with trailers, transfer switches, and fuel tanks.

Triton EPA Generators are engineered to exacting standards for the US and Canadian markets. We offer options for everything from hurricane zones along the Gulf coast to the harsh climate of the far north. Triton generators are deployed at government facilities, hotels, manufacturing plants, medical facilities, grocery stores, and data centers across North America.

The TP-P55-T3-UL delivers a standby rating of 57 kW / 71 kVA and a prime rating of 51 kW / 64 kVA. The Perkins 1104D-44TG1 is a four-cylinder, turbocharged diesel engine engineered for strong performance and outstanding reliability in both prime and standby power generation applications. Operating at 1800 rpm, it delivers 63 kWm (84 hp), providing an excellent balance of power, fuel efficiency, and long-term durability. At Triton Power, we select engines like the Perkins 1104D-44TG1 because they ensure consistent output, simplified maintenance, and the full support of Perkins’ global parts and service network—making them a trusted solution for demanding environments. The Perkins 1104D-44TG1 pairs with a Leroy Somer alternator, and the Deep Sea DSE 7420 digital control panel makes monitoring and management straightforward. The TP-P55-T3-UL is built to rugged specifications and delivers power exactly where and when you need it.

The TP-P55-T3-UL includes the following standard features:

  • Perkins 1104D-44TG1 Tier 3 diesel engine
  • Leroy Somer alternator with Class H insulation
  • Deep Sea DSE 7420 programmable digital control panel
  • Sound-attenuated steel enclosure, powder-coated finish
  • Heavy-duty steel base frame with anti-vibration mounts
  • Easy interface and serviceability access on both sides
  • Heavy-duty chassis designed to handle any terrain or location
  • Available in Open Skid and Enclosed configurations
  • UL 2200 Listed
  • EPA Tier 3 Certified for Emergency Stationary use in the US and Canada
  • Fuel tanks available as an option — contact us for a quote

Triton EPA Generators are compliant for emergency stationary use throughout the United States and Canada. Our generators are engineered to operate in the most challenging environments and can be modified to meet virtually any application. With standalone models ranging from 10 kW to 2,500 kW, paralleled generators up to 20 MW, and the ability to customize a unit to fit any need, your options for durable and reliable power generation are essentially unlimited.

Why choose this model

  • Perkins 1104D-44TG1 engineEngine data sheet included below
  • Standby & prime rated57 kW / 71 kVA standby · 51 kW / 64 kVA prime
  • 60 Hz, 3-phaseVoltages listed: 120/208, 277/480
  • Enclosed or Open SkidConfigurations available for this model
  • Leroy Somer LSA42.3L9 alternatorAlternator specifications included below
  • Deep Sea DSE 7420 control panelControl panel listed for this model

Typical applications

Listed in our industry catalogs: Restaurants & hospitality

Technical specifications

Specifications

Values are shown exactly as published. Anything not listed is marked “Not specified”.

Download full specifications
Generator
Triton Model TP-P55-T3-UL
Typical Generator Output Standby: 71 kVA / 57 kW Prime: 64 kVA / 51 kW
Engine
Engine Brand Perkins
Engine Model 1104D-44TG1
Engine Power Output 65 kWm / 87.15 HP @ 1800 RPM
Aspiration Turbocharged
Displacement 4.41 L
Cylinders 4, in line
Speed 1800 RPM
Alternator
Alternator Brand Leroy Somer
Alternator Model LSA42.3L9
Insulation Class H
Electrical
Frequency 60 Hz
Voltages Available 120/208, 277/480
Control
Control Panel Deep Sea DSE 7420
Physical Configuration
Models Available Enclosed, Open Skid
Compliance
Engine Tier Rating Tier 3
Compliance UL 2200 Listed, EPA Tier 3, NFPA 110 compatible
Physical
DimensionsNot specified
WeightNot specified
ConfigurationsEnclosed, Open Skid

Dimensions and weight are not published for this model. Ask for the data sheet.

Compliance & market
EmissionsTier 3 EPA Certified — Emergency Stationary Applications
MarketUSA EPA-certified
UL 2200Listed
Configure this generator

Choose your configuration

Options are the ones published for this model. Fuel tank and transfer switch choices are confirmed in your quote.

Frequency
Voltage
Configuration
Duty
Transfer switch needed?
Engineering documents

Technical documents

Specification sheets, engine and alternator data and brochures for this model, for your engineering and procurement teams.

Compatible with this engine

Parts listed for 1104D-44TG1

These parts name this engine model in their own description. Confirm your engine serial number when ordering.

Similar generators

Compare with similar models

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Comparison of TP-P55-T3-UL with similar models
ModelTP-P55-T3-ULThis model TP-55-T3TP-P65-T3-ULTP-NG40-S-K-ULTP-Y40-T4i-SGUL
Standby57 kW / 71 kVA55 kW / 70 kVA65 kW / 81 kVA40 kW / 50 kVA38 kW / 47 kVA
Prime51 kW / 64 kVA51 kW / 64 kVA59 kW / 74 kVA34 kW / 44 kVA34 kW / 40 kVA
EnginePerkins 1104D-44TG1Perkins 1104D-44TG1Perkins 1104D-E44TG1PSI Engine 4.3LYanmar 4TNV98T
AlternatorLeroy Somer LSA42.3L9Leroy SomerLeroy Somer LSA44.3S4—Stamford
Control panelDeep Sea DSE 7420—Deep Sea DSE 7420——
Frequency60 Hz60 Hz60 Hz60 Hz60 Hz
Voltages120/208, 277/480120/208, 277/480, 120/240120/208, 277/480—120/208, 277/480, 120/240
ConfigurationEnclosed, Open SkidEnclosed, OpenEnclosed, Open Skid—Enclosed, Open
Fuel tank—————
MarketUSA EPA-certifiedUSA EPA-certifiedUSA EPA-certifiedUSA EPA-certifiedUSA EPA-certified
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