Electrical • Power Quality • Isolation Transformer Products

isolation transformers, transformer, ac, dc, kva, custom, single phase, three phase, 3, computer mounted, drive, marine, medical, noise, rack mounted

Filter by state

  • Neel Controls

    Neel offers K-Rated Isolation Transformers for data centers, VFD's, hospitals, corporate institutions, and much more. Specs include up to 750 KVA, 415 input voltage, 415/200 output voltage, and 3-4% impedance phase.

  • SolaHD

    Emerson offers Sola HD drive isolation transformers from 7.5-440 kVA, 3-Phase, 60 Hz. These units are used for SCR variable speed motor drive applications.

  • Controlled Power

    Controlled Power Company offers a line of K-Rated Isolation Transformers in sizes from 5kVA to 500kVA at 50 or 60Hz frequencies. Their SureImage Model is a medical grade product, with 3-phase sizes of 75K(i), 112.5K(i), 150K(i), and 225K(i).

  • Amveco

    Amveco offers custom medical grade, high isolation, toroidal transformers (50/60Hz) with nominal power VA of 100 to 10,000. Units rated below 1000VA come with metal disk and insulating pads while those rated above are center potted.

  • West Coast Magnetics

    West Coast Magnetics offers a PC Mount Isolation Transformer, designed for 50/60 Hz operation, that uses a split bobbin construction with a shroud resulting in high isolation between windings. This product is rated at 3750 Vac Hypot and 2.8 VA to 36 VA. Their Chassis Mount design is also for 50/60 Hz operation using a split bobbin construction, and is rated for a 3750 Vac Hypot with power levels from 21 VA to 153 VA.

  • Tripp-Lite

    Tripplite's general purpose isolation transformers come in three models that offer 250, 500 and 1000 VA/Watt capacities, and 2 or 4 output receptacles. Their medical grade designs come in four models that offer 250. 500, 1000 and 1800 VA/Watt capacities, and 2,4 or 6 hospital grade output receptacles.

  • Hammond Power Solutions, Inc.

    HPS Drive Isolation Transformers are manufactured for AC and DC variable speed drives, and are designed to withstand overcurrent of 150% of the rated load for 60 seconds or 200% for 30 seconds. Sizes range from 5 to 600 HP is six voltages. Non-standard sizes are available as well.

  • Zeta Windings

    Zeta Windings manufactures isolation transformers for medical equipment. These units are designed to isolate the patient or operator from an electric shock and to protect the medical equipment itself from power surges. All products comply with Medical BS EN 60601, Technical Equipment BS EN 60950, Safety Isolating BS EN 61558 (60742) regulations.

  • APC by Schneider Electric

    APC's WW 10kVA Isolation Transformer has a nominal output and input voltage of 230V with an input frequency from 45 - 65 Hz. The maximum total current draw per phase is 60A. This unit is rack mountable.


    Isolation Transformer Sales is a distributor and manufacturer offering any 3 phase isolation transformer you need, be it line, drive, medical grade, or a custom units built to your specifications. Three phase toroidal designs are three separate single phase units that can be mounted individually or stacked together.

  • Jerome Industries

    Jerome Industries manufactures 60-120VA rated, desktop, medical grade isolation transformersbuilt for continuous use and able to handle temperatures between 0-40 C. These units offer short circuit and overload protection, noise and/or surge protection, optional output connect configurations, and output power up to 500VA.

  • Glentek, Inc.

    Glentek manufactures isolation power transformers for servo systems. Single phase models range from 1-2 KVA of continuous power. Three phase designs range from 3-9 KVA. Glentek also manufactures specialty types.

  • Modern Power Solutions Provider

    Modern Power Solution Provider offers a variety of isolation transformers. Their Dry Type is suited for financial, educational and TV broadcast facilities. Their Drive Series are used with AC and DC adjustable speed drives that can generate mechanical stresses and harmonic currents beyond general purpose types. Their AC unit is used to decouple two circuits and allows an AC signal to be taken form one device and fed into another.

  • Toroidal Corp of Maryland

    Toroidal Corp of Maryland manufactures the IsoBox Series of medical grade isolation transformers. A-Series specs feature 120V - 60 Hz In, 120V Out, 300, 600, 900, 1200, 1700VA. C-Series offers the same specs as the A-Series but filtering and surge suppression is standard. W-Series specs include 120/240V - 50 Hz In, 120/240V Out, 300, 600, 1000VA, with filtering standard.

  • Mastervolt

    Mastervolt manufactures isolation transformers for marine use. The Mass GI is a small and light (only 6 kg) design, 3.5 kVA/16A. Mastervolt’s IVET-D torroidals are supplied in either 16A/3.5 kVA or 30A/7 kVA versions (for 220-240V). There is also the heavy-duty E-Core Series (without cabinet) in a chassis version for do-it-yourself applications.

  • Victron Energy

    Victron Energy offers three isolation transformer models for marine use. The 2000W has an input and output voltage of 115/230V and is rated at 17/8.5 A. The 3600W has an input and output voltage of 115/230V and is rated at 32/16 A. The 7000W has an input and output voltage of 230V and is rated at 32 A.

  • Teal

    Teal designs and manufactures isolation transformers that offer a neutral-ground bond for single point grounding, common-mode noise rejection, and conversion from Delta to Wye. Teal units can be custom designed for specific power and voltages. The TEALtran model is designed for high peak power in medical imaging applications.

  • Plitron Mfg., Inc.

    Plitron manufactures standard and custom toroidal transformers. These three phase isolation units are designed for medical and audio specifications.

  • Cincinnati Babbitt, Inc.

    Rockwell's Allen-Bradley transformers can provide both voltage change and isolation for  variable speed drives. Units are harmonic compensated and IGBT protected in the presence of noisy harmonics. 

  • SNC Mfg

    SNC builds custom isolation transformers for OEM applications. They offer assemblies with a variety of specs. Primary ranges are available in 100-240 VAC, 220-240 VAC, and 360-480 VAC. Secondary ranges are available from 120-240 VAC @ 600 VAC, 220-1500 VAC, and 120 VAC - 13A. All units are available in 50/60 Hz.