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

  • Hammond Power Solutions Appoints Linda Nadeau Sanford as Western Regional Sales Manager

    Hammond Power Solutions Appoints Linda Nadeau Sanford as Western Regional Sales Manager

    May 12, 2025 Hammond Power Solutions (HPS), a leader in dry-type transformers and power quality solutions, is pleased to announce the appointment of Linda Nadeau Sanford as the new Western Regional Sales Manager. Linda will play a key part in driving sales and revenue across the Western Canada region. She will oversee territory management, advance… Read More…

  • Susanna Zagar, Ontario Energy Board CEO, Named EHRC’s 2025 Agent of Change

    Susanna Zagar, Ontario Energy Board CEO, Named EHRC’s 2025 Agent of Change

    May 12, 2025 Electricity Human Resources Canada (EHRC) is proud to announce Susanna Zagar (she/her), Chief Executive Officer of the Ontario Energy Board (OEB), as the recipient of the 2025 Agent of Change Award. This recognition celebrates Ms. Zagar’s remarkable leadership and commitment to diversity, equity and inclusion (DEI) in the electricity sector. Since stepping… Read More…

  • AD Reports Huge Jump in Member Sales Through Three Months of 2025

    AD Reports Huge Jump in Member Sales Through Three Months of 2025

    May 12, 2025 AD reports that member sales in the first three months of 2025 increased 23% to a record $24 billion across the group’s 14 divisions and three countries. AD welcomed over 550 new members in the first quarter through both organic growth and the IMARK Electrical merger. AD members also acquired another 10… Read More…

  • Legrand Introduces Wattstopper i3 Building Management Platform

    Legrand Introduces Wattstopper i3 Building Management Platform

    May 12, 2025 Legrand® has announced the launch of the Wattstopper i3 Platform, a next-generation lighting and building intelligence solution powered by KODE Labs, a global leader of advanced smart building technology.  The partnership positions Legrand to lead the lighting controls industry into a new era of unified experiences, seamless integrations, and data-driven control, making it easier… Read More…