Fixing the Main Breaker

Both my friend and I had problems with our main breaker.  It seems that if you have a
Crouse-Hinds breaker box that you should cross reference the part to a Murray part.

I had a main breaker E13207 which can be replaced by a Murray MPD2200

These are 200 Amp two pole units.


Murrey,  Siemens,  Crouse-Hinds and Square D's Home-line are interchangeable.

http://electrical.about.com/od/panelsdistribution/a/breakerbrands.htm
From time to time there may be a need to change a breaker or add one to your electrical panel.
Most electrical devices, like switches, outlets and such, can be switched out with another
brand without any problems. Breakers, however, are brand specific and require the exact
replacement type to function properly in the electrical panel. Because of different mounting
techniques, thickness of buss bars, and whether the breakers are press in or bolt on, it is
necessary to use the appropriate breaker for the specific panel.

What's Wrong With Using Another Brand?

Although a breaker from another manufacturer may fit in the panel you have, the differences
that you don't see may cause a electrical nightmare. Some breakers clamp over the buss bar,
while other bolt onto the buss. Some breaker bases clamp onto a mounting bar, while others
slide into a groove to secure the breaker. The tension that the breaker contacts are set for is
brand-specific.

Although a breaker from another manufacturer may fit in the panel you have, the differences
that you don't see may cause a electrical nightmare. Some breakers clamp over the buss bar,
while other bolt onto the buss. Some breaker bases clamp onto a mounting bar, while others
slide into a groove to secure the breaker. The tension that the breaker contacts are set for is
brand-specific.

Will Another Brand Fit?

Yes, another brand, say Bryant breakers, will fit into a GE breaker slot. The manufacturer will
tell you that they are not responsible for damage to the panel if you use a different
manufacturers breaker.

Snap-in or Bolt-in?

Electrical panels come in different styles for residential, commercial, and industrial
installations. While snap-in type breaker panels are used for residential and commercial
installations, normally, bolt-in breakers are used for industrial installations where vibration
may be a concern and a continuously tight contact is needed.

Same Manufacturer, Different Breakers

Square D has a Q0 series panel that has a different type breaker than their Homeline panel
does. They both accomplish the same thing, but the construction is quite different. Notice in
the photo how the Homeline breaker(left) physically mounts and how there is no way it could
replace the Q0 breaker in the center of the photo. These breakers are even made by the same
company, making the breaker selection even more critical. Also notice how the Cutler
Hammer breaker mounts. It too is much different. That means, only replace a breaker with an
exact match.

How Do I Know What Type Breaker I Have?

The breaker is maker on the side with type and amperage. If you open the panel door and look
on the inside cover of the door, there is a label that should also tell you what type breaker that
you need.

More About Circuit Breakers

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