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Transformers for Rent

United Rentals carries an extensive lineup of heavy-duty transformers, with units for rent ranging from 15 kVA to 7,000 kVA. Our portable and efficient transformers come mounted to a skid frame and are rated for outdoor use.

For our full list of transformers for rent, view the items below. For more information, visit our resource section.

White and brown HiPower portable mill panel
Cat Class Code
241-3459

15 kVA Step Up or Down Transformer, 600V or 480V to 120/208V

  • 15 kVA
  • Step up/down
  • 600V or 480V to 120/208V
  • Single-phase
  • Uses: Ideal for temporary power applications like remote work areas, job trailers or live events
White and Silver HiPower portable mill panel
Cat Class Code
241-3460

30 kVA Step Down Transfomer, 480/575V

  • 30 kVA
  • Step-down
  • 600V or 480V to 120/208V
  • Three-phase
  • Uses: Ideal for powering portable distribution panels, remote projects or equipment
White Vantran 2,500 kVA Step-down Transformer
Cat Class Code
241-3465

2,500 kVA Step Up or Down Transformer, 15,000V

  • 2,500 kVA
  • Step up/down
  • 4,160V to 15,000V to 480V
  • Three-phase
  • Uses: Ideal for large-scale power conversion in commercial and industrial applications
Red Worksite Step-Down Transformer
Cat Class Code
241-3550

25 kVA Step Down Transformer, 480V to 240/120V

  • 25 kVA
  • Step-down
  • 480V to 240/120V
  • Single-phase
  • Uses: Ideal for generating power for street lighting, residential areas and more
45 kVA White and black Transformer Step up/Step down
Cat Class Code
241-3580

45 kVA Step Up or Down Transformer, 600V/480 to 208V

  • 45 kVA
  • Step up/down
  • 600V/480 to 208 voltage
  • Three-phase
  • Uses: Ideal for small to medium jobsites and business applications
White and black 75 kVA Step Down Transformer, 480V/208V
Cat Class Code
241-3600

75 kVA Step Down Transformer, 480V to 208V

  • 75 kVA
  • Step-down
  • 480V to 208V
  • Single- and three-phase options available
  • Uses: Ideal for standby or backup power solutions
Transformer Pack Shot
Cat Class Code
241-3640

150 kVA Step Down Transformer, 480V to 208V

  • 150 kVA
  • Step-down
  • 480V to 208V
  • Single and three-phase options available
  • Uses: Ideal for temporary, mobile or backup power conversion
Black and white HiPower 3-phase isolation transformer
Cat Class Code
241-3660

300 kVA Isolation Transformer, 480V to 208/120V

  • 300 kVA
  • Isolation
  • 480V to 208/120V
  • Three-phase
  • Uses: Ideal for large power applications, like backup power, commercial factories and more
White and black AES 300 kVA Step Down Transformer, 1,200 Amp Panel
Cat Class Code
241-3661

300 kVA Step Down Transformer, 480/600V to 120/208V

  • 300 kVA
  • Step-down
  • 480/600V to 120/208V
  • Three-phase
  • Uses: Ideal for large power applications, like backup power, commercial factories and more
White and black 500 kVA Step Down Transformer, 600V to 208/120
Cat Class Code
241-3670

500 kVA Step Down Transformer, 600V to 208/120

  • 500 kVA
  • Step-down
  • 600V to 208/120V
  • Three-phase
  • Uses: Ideal for large power applications, like residential backup power and commercial production
White and black 750 kVA Step Down Transformer, 600V to 480V
Cat Class Code
241-3680

750 kVA Step Down Transformer, 600V to 480V

  • 750 kVA
  • Step-down
  • 600V to 480V
  • Three-phase
  • Uses: Ideal for large applications, industrial tasks and power generation
White and black 1,000 kVA Step Down Transformer, 4,160V to 480V
Cat Class Code
241-3690

1,000 kVA Step Down Transformer, 160V to 480V

  • 1,000 kVA
  • Step-down
  • 4,160V to 480V
  • Three-phase
  • Uses: Ideal for powering heavy-duty applications, commercial buildings or outdoor distribution systems
Transformer
Cat Class Code
241-3700

1,500 kVA Step Down Transformer, 13,800V to 480V

  • 1,500 kVA
  • Step-down
  • 13,000V to 480V
  • Three-phase
  • Uses: Ideal for supplying continuous power to commercial and industrial sites
White Vantran Transformer, 5,000/7,000 kVA, 5/15kV to 480V
Cat Class Code
241-3715

5,000-7,000 kVA Step Up or Down Transformer, 5,000V to 15,000V and 480V or 600V

  • 5,000-7,000 kVA
  • Step up/down
  • 5,000V to 15,000V and 480V or 600V
  • Three-phase
  • Uses: Ideal for large-scale power conversion in commercial, industrial and residential applications
White Vantran Transformer, 7,000 kVA, 5/15kV to 480V
Cat Class Code
241-3718

7,000 kVA Step Up or Down Transformer, 480V or 600V

  • 7,000 kVA
  • Step up/down
  • 5,000V to 15,000V and 480V or 600V
  • Three-phase
  • Uses: Ideal for heavy-duty power applications, like powering factories, residential neighborhoods and industrial projects
Transformer, 75 KVA , 575-460/277V
Cat Class Code
241-3925

75 kVA Step Up or Down Transformer, 480V to 600V

  • 75 kVA
  • Step up/down
  • 480V to 600V
  • Three phase
  • Uses: Ideal for stepping up or stepping down voltage for use in various industries, like construction or entertainment
Resources

FAQs About Transformers

United Rentals is a leading supplier of transformers for rent, designed for efficient and consistent power conversion and distribution. These temporary power supply transformers are designed for safe and easy installation through industry-standard connectors. Our fleet has reliable single- and three-phase transformers that are excellent for powering jobsite trailers and loads from the same power source and are complete with step-down and step-up options for power conversion. Transformer rentals are commonly used in various industries, like construction, entertainment, sports and more. Our inventory has a range of units, including this 2,500 kVA step-down transformer, designed for heavy-duty power needs, as well as this 15 kVA transformer for smaller applications.

Learn more about transformers in our FAQ section below.

FAQs
What size transformer do I need?

To determine what size transformer you need, analyze your existing power system and use that information to calculate a corresponding transformer. When sizing your transformer, it's important to consider input and output voltage, as well as the VA rating that your specific worksite requires. Additionally, to find the kVA you’ll have to make a series of calculations based on your electrical schematics. Need more help? Contact one of our equipment experts for further guidance.

How many types of electrical transformers are there?

United Rentals offers three different types of electrical transformers: step-up, step-down and isolation transformers. Step-up transformers are designed to increase voltage. Step-down transformers decrease voltage. Isolation transformers have isolated primary and secondary windings to reduce voltage spikes in the supply line. Transformers commonly employ multiple types at once. For example, isolation transformers are capable of both stepping up and down voltage levels.

What is the difference between a step-up and a step-down transformer?

A step-up transformer increases from input to output voltage and is typically used for enhancing and boosting voltage for power equipment with higher voltages. A step-down transformer decreases from input to output voltage, making transmission power cheaper and safer.