Hammond Manufacturing Medical Grade Plug-In Line Isolation Transformers

EIN Hammond MG 400

February 11, 2022

Intended for non-patient connected indoor applications where protection of sensitive electronics is required:

  • High end audio / studio use
  • Medical electronics
  • High end test equipment / laboratory
  • cULus Listed to UL 60601-1 (1st Edition) and CAN/CSA-C22.2 No. 601.1-M90 (R2005).
  • Each unit provides complete line isolation and noise filtering plus utilizes a Faraday shield to reduce leakage currents below UL60601-1 requirements (under 100 microamps).
  • Reduced noise coupling due to floating AC output.
  • Not intended to be used to supply power to life support appliances. 

3 different VA Capacities available – –  500VA, 1000VA, and 1800VA.  All rated 50/60Hz. 4 different electrical configurations;

  • 120V-120V straight isolation (“178” series)
  • 240V-240V straight isolation (“240” series)
  • 240V-120V step down isolation (“289” series)
  • 120V-240V step up isolation (“298” series)

Other features:

  • Vented 14 gauge steel housing with white powder paint
  • Hospital Grade 3-wire grounded Input Plug (see chart).
  • 2 or 3 Duplex Hospital Grade Output Receptacles (see chart).
  • On-Off Switch / Circuit Breaker combo protected, and built in automatic Thermal Cut Out for added protection.

Go HERE for more information

Related Articles


Latest Articles


Changing Scene

  • BC Hydro Making it Easier and More Affordable to Connect New Homes

    BC Hydro Making it Easier and More Affordable to Connect New Homes

    July 24, 2025 BC Hydro is supporting the construction of new housing developments in growing communities by advancing changes to streamline upgrades and reducing the cost of new customer connections to BC Hydro’s electricity grid. “As communities across B.C. grow, so does the need for essential housing. We are committed to ensuring we’re ready to… Read More…

  • Mitrex Sets Record with Largest BIPV Solar Panel Mural at SunRise Residential in Edmonton

    Mitrex Sets Record with Largest BIPV Solar Panel Mural at SunRise Residential in Edmonton

    July 22, 2025 Building-Integrated Photovoltaics (BIPV) manufacturer, Mitrex proudly announces that its transformative SunRise Residential project in Edmonton, Alberta, has earned the Guinness World Record for the largest solar panel mural globally. This landmark project showcases Mitrex’s innovative BIPV solar panels, blending cutting-edge solar technology with vibrant cultural artistry to redefine sustainable architecture. Sustainable Architecture with BIPV Spanning over 30,000 square feet, the Mitrex eFacade PRO plus… Read More…

  • Nexans Unveils a Cable Made with 100% Recycled Materials

    Nexans Unveils a Cable Made with 100% Recycled Materials

    July 24, 2025 Nexans has reached a major milestone in its sustainability journey by developing a prototype cable made entirely from recycled materials — a first in the company’s history. This innovation combines technical performance, industrial feasibility, and a drastically reduced environmental footprint, marking a decisive step forward in circular economy. A cross-continental success story… Read More…

  • EFC Welcomes New Manufacturer Member: MGM Transformers

    EFC Welcomes New Manufacturer Member: MGM Transformers

    July 24, 2025 Since 1974, MGM Transformers has produced tough and trusted transformers designed to get the job done right. As a leading manufacturer, the company employs a highly experienced and dedicated engineering team that excels in custom designs. MGM Transformers is committed to excellent quality and service, offering industry-leading lead times and exceptional customer service. MGM Transformers specializes… Read More…