Switchgear Maintenance Services

Direct Replacement Trip Units

etc-12 Q Series

The etc-12 Q Series trip unit is a suitable retrofit replacement for the Schneider Electric / Merlin Gerin Masterpact M ACB range STR28D, STR38S, STR58U and STR68U trip units fitted on Masterpact breakers.

  • Quick swap, plug-in unit
  • Helps prevent nuisance tripping
  • RMS sensing
  • Adaptable to all breaker frame sizes
  • No need for ratings plugs
  • LSIG protection with defeatable protection bands
  • Digital display with 3-phase ammeter
  • Detailed trip logging
  • Uses original CT's and flux trip device

Unlike the original STR‘s the new satinAMERICAN etc-12 Q Series trip unit can be used on different frame sizes (3 or 4 pole) and is able to be rated to suit any Masterpact breaker as it does not require a rating plug. This means that it can also then be moved and used on another breaker if required. In addition it is also compatible with neutral sensors in residual ground fault protection schemes.

Once installed on a Masterpact (or equivalent Moeller XZM/Square D branded unit) air circuit breaker, the etc-12 Q Series trip unit is secondary injection tested with an ETC Technologies test set across each phase individually as well as ground fault if fitted; proving the protection. When installed the etc-12 Q Series can be programmed with exactly the same settings as the replaced faulty STR, with the additional benefit of being programmable via the front panel control buttons and including an LCD display to view both settings and trip events. The display can also give a “live” view showing current per phase for monitoring and pick up indication.

Secure Customer Login

Secure customer login

Call Us Now
+44 (0)1744 814444

Give us a call now

Email Us Now

Email us now for diesel generators

Latest News

Latest diesel generator & switchgear news

Latest Vacancies

Link to latest jobs

Follow Us On Google+

Link to BGSS Google+ page

Opening Hours

Details of Opening Hours
Series Trip Unit

Masterpact M

etc-12 Q series replacement trip unit

Web Site Search

If you can not find what you are looking for, use our web search facility

Web search link