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MCG Surge Protection


Surge Protection is Our Only Business.

Over 45 Years of Perfect Protection

ISO 9001:2008 Certified

A Northrop Grumman "Small Business Vendor of the Year."

MCG designs and manufactures highly reliable, industrial grade, surge protectors that guard sensitive equipment from damage. AC Power Line, Data Line, DC and Low Voltage SPDs

Since 1967, MCG continues to be intensely dedicated to one area - the design, development and manufacture of highly reliable surge protection devices. Products you can depend on when it counts.

Lightning and power surges can seriously damage or disrupt operations in hospitals, financial institutions, military installations and other mission critical activities. MCG Surge Protection's  attention to design and manufacturing offers extraordinary surge current diversion capability, reliably protecting sensitive systems from damaging transients, downtime, and its associated financial and labor costs. 

Made in the USA since 1967.

Call us - five minutes on the phone with an applications engineer can solve your surge protection problems. 1 (800) 851-1508

Click here to subscribe to our monthly newsletter.

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MCG Surge Protection


Surge Protection is Our Only Business.

Over 45 Years of Perfect Protection

ISO 9001:2008 Certified

A Northrop Grumman "Small Business Vendor of the Year."

MCG designs and manufactures highly reliable, industrial grade, surge protectors that guard sensitive equipment from damage. AC Power Line, Data Line, DC and Low Voltage SPDs

Since 1967, MCG continues to be intensely dedicated to one area - the design, development and manufacture of highly reliable surge protection devices. Products you can depend on when it counts.

Lightning and power surges can seriously damage or disrupt operations in hospitals, financial institutions, military installations and other mission critical activities. MCG Surge Protection's  attention to design and manufacturing offers extraordinary surge current diversion capability, reliably protecting sensitive systems from damaging transients, downtime, and its associated financial and labor costs. 

Made in the USA since 1967.

Call us - five minutes on the phone with an applications engineer can solve your surge protection problems. 1 (800) 851-1508

Click here to subscribe to our monthly newsletter.

Surge Protectors:

AC Protection with Power Metering

**COMING SOON**

The Executive Series provides rugged surge protection at the main service panel, along with new onboard, revenue-grade power and energy metering.

  • 400LS Executive
  • 300LS Executive
  • 200LS Executive

DC Lines TVSS

 

LVC TVSS (Crowbars)


Full Product Catalog Downloads

New: System Wide Protection Overview Diagram


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New: System Wide Protection Overview Diagram


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Click here to download a zoomable, scalable copy of this system wide surge protection overview diagram. The diagram shows how MCG Surge Protection applications can fit into your facility. Visit the APPLICATIONS page to learn more about how MCG can help protect your critical equipment and facilities. 

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Must Read: Updated Guide to Surge Protection


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Must Read: Updated Guide to Surge Protection


The Truth of the Matter: Updated Guide to Surge Protection

 

The Newly updated, iconic guide cuts through the hype and provides clear-cut explanations of the important principles regarding AC Power Line surge suppression. It does not promote specific products, but instead attempts to "de-mystify" specsmanship.

Click Here (English)
Click Here (Spanish)

 

Field Notes from Chief Engineer Dion Neri


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Field Notes from Chief Engineer Dion Neri


Field Notes from Dion Neri, MCG Chief Engineer

A High-Tech Mansion Sent Me Below Ground for a Quick Fix

Good afternoon,

Our New York Representative, Paul Moraff, and I visited a mansion that has been built, but is still under construction on the inside and about the property – 20ft ceilings, ballroom, rock climbing wall, nice view of the water and pocket doors throughout. I don’t have pictures of the house but it overlooks the Long Island Sound. One of our AC Power Line Surge Protectors, a 120M, was beeping and the red light was on. Very unusual, so we did a site survey to see what the problem was. The house has comprehensive MCG AC Power Line SPDs - over ten 120Ms, eight PT80s and several LS units.  

 
 

The unit with the beeper and the red light on wasn’t one of the six units in the first picture. Those are fine. I call this installation the MCG “Six Pack”. These units are protecting two ATS fed from two 800 Amp, 120/240VAC, single-phase 3W+Ground services. They will guard an additional two generators, which are not yet on site. One of the services is solely dedicated to the home’s climate control, which includes both indoor and outdoor radiant heat (the outdoor is to prevent ice from forming on walkways and driveways). The top two units on each side are energized and the green lights are on. Many LEDs are visible in the photo. The bottom unit on each side should not be energized yet, as those are connected to the generator input of the two ATS.

 
 

The 120M that was beeping was in a pit outside along with central air conditioner condensers.  It was fun crawling on the top of the wall and down the ladder into the pit. I wondered if the skies would open up and pour while I was down there playing with electricity, but they did not. The architects on the job cleverly hid the AC units behind a nice curved wall in front of the house. The back of the house had a whole row of condensers, too, for more A/C capacity.  I guess the owners like it cold. Nice!

The last photo is of the 120M that we went to service. It was wet inside. Likely, the protector’s front door was not tightened. I replaced all the guts and sealed the door with some silicone.

Another day in the trenches.

 

IMPORTANT: MCG Surge Protectors used in outdoor locations are housed in NEMA 4, 14 gauge steel, powder-coated enclosures. All bolts MUST BE securely fastened to maintain integrity of the seal. 

 

Sincerely,

Dion Neri

Chief Engineer

MCG Surge Protection

New Application: Surge Protection for Electric Vehicle Charging Stations


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New Application: Surge Protection for Electric Vehicle Charging Stations


THE CRITICAL NEED FOR SURGE PROTECTION
IN ELECTRIC CAR CHARGING SYSTEMS

 
 

The Critical Need for Surge Protection in Electric Car Charging Systems

By Dion Neri, Engineering Manager, MCG Surge Protection, Inc.

Deer Park, NY May, 2015

Electric Cars are inherently more reliable than the gasoline ones that they are replacing. So, anyone who purchases one of these vehicles can reasonably expect years of trouble-free transportation. Typically these cars are driven in the daytime and electrically charged at night.

However, these reliable new vehicles are subject to severe damage by transients while they are being charged. These transients may be the result of a nearby lightning strike, utility failures, or human error. Transients can do severe damage to the charger, the batteries, and other parts of the car.

Damage to the vehicle is not the only cost issue for the owner - there is also the hassle of having it towed to the dealer for repair, which can result in days of lost use. Even if the damage is covered by its warranty, and it may not be, an event such as this is a great inconvenience.

The best way to minimize the risk is to install AC Power Line Surge Protectors (SPD) especially designed for this application by MCG Surge Protection. MCG’s PT series or M series are typically used in these applications, specifically a PT80-120T-BB or 125M-120T-A.The surge protectors come with a 20-yr, “No Nonsense” warranty and free replacement modules, where applicable, for life.

Another benefit of using surge protectors is that surges generated by the car’s electric motors will be prevented from back feeding to the service panel, and damaging computers, cell phones/tablets (while they’re charging), HDTV, HVAC controls, and other sensitive electronic equipment at the residence. The protectors include low-frequency filters that minimize low-frequency noise interference in electrical systems. Surge protectors are cost-effective and easily installed by licensed electricians. Installing surge protection devices (SPD) ensures that all of your electronics equipment operates more reliably.

MCG has been manufacturing surge protectors for over 48 years. They also protect chargers used with forklifts, golf carts, and other similar devices. For additional information, please visit www.mcgsurge.com, or contact Dion Neri, at dion@mcgsurge.com.

Recommended MCG surge protection models for EV charging stations:

pt40-bb

Affordable protection for local panels.

  • I peak=40,000A/Phase (8x20μs waveform)
  • UL1449 3rd Edition Listed

pt80

More powerful protection and monitoring.

  • I peak=80,000A/Phase (8x20μs waveform)
  • UL1449 3rd Edition Listed

150m

Robust modular protection.

  • I peak=160,000A/Phase (8x20μs waveform)
  • UL1449 3rd Edition Listed

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