Covid 19 Crisis
We are open and able to ship available stock to you same day. HQ staffing reduced so some tasks (e.g. answering phones) might take longer.
Some restrictions on site visits. Please call and we shall do all we can to help.
Masterpact Centre of Excellence Logo

Masterpact
Center of Excellence

The dedicated Masterpact Resource Site of Leading UK switchgear experts PS Electrical

24/7 Emergency Call

We operate a 24/7 emergency call out service in support of air circuit breakers. If you're experiencing problems please call us directly

+44 (0) 1299 251 758

Masterpact Support

Support

We may be a small team, but we provide outstanding support to make sure your ACBs keep working, day and night. This support frequently includes:

– out of hours call back phone support

– out of hours fitting and testing

– advice using email, telephone and photos emailed from your phone

Speed of response is very important to our regular, long-term clients, so we do everything we can to help you, when and where you need it.

+44 (0)1299 251 758

FAQs


My breaker is nuisance tripping due to a faulty STR protection unit. Do I need to replace the complete circuit breaker?

No, the faulty STR protection device can be replaced with either the Amp Safe Pro.


My breaker is fixed in place and not withdraw able. Can the protection unit still be replaced?

Yes, the protection device fits all Masterpact M and MP devices, both fixed pattern and withdrawable.


I have numerous masterpact M devices on site in various frame sizes ranging from 800A to 2500A in 3 pole and 4 pole. Do I need to order the new protection device for a specific frame size?

No, the replacement protection devices are programmable to suit all frame sizes from 800A to 6300A, therfore only one spare unit needs to be held and this will cover the complete range.


Can we fit these devices ourselves?

Yes but allowing for skill levels the options are :
a) PSE will train your electrician and he will become accredited.
b) PSE will set up the new protection devices for you based on the current protection settings, these will be tested on breakers in our works and shipped to you ready to install, complete with test documentation.
c) PSE will supply an engineer who will install and test the units in situ on your premises.


We are having operation problems with the Masterpact M. Can you help?

Yes PSE operate both planned maintenance services and call out facilities.


We are aware that the OEM no longer supports the Masterpact M. Do you hold any spare parts?

Yes. PSE hold a full range of new operating coils and charge motors in all voltage ranges, coupled with
main pole replacement and new current transformers.


We require wireless communications capability from our circuit breakers. Can this be done?

Yes. Wireless communications are available from the Amp Safe Pro. This protection unit also offers full power metering including Kw, Kvar, Volts, Amps and Powerfactor as well as load-shedding capability.


We note from your web site that you have discontinued the ETC12Q protection unit due to incompatibility issues that were discovered by yourselves during independent testing, do any of these issues effect the Amp Safe Pro or Pro Plus?

The Amp Safe Pro and Pro Plus are fully CE and UL certified,the Amp Safe product line has been independently tested and proven to meet all required standards as well has having 100%STR emulation capability without of course the nuisance tripping problem of the old STR units.