Operating at 90 amps, this 3-pole Series C circuit breaker offers essential overcurrent protection. The G-frame MCCB utilizes a fixed thermal-magnetic trip unit, providing precise LI response for industrial machinery and facility power. Installation is straightforward with its unit-mount design. The breaker integrates into Eaton panelboards, motor control centers, and standalone enclosures. Rated 14kAIC at 480Y/277VAC, the GHC3090 features current limiting capabilities and is HACR rated.
Which panelboards and enclosures are compatible with the GHC3090 circuit breaker?
This G-Frame breaker is designed for use in Eaton Series C panelboards, motor control centers, and OEM enclosures. It can also be mounted on a standard DIN rail when paired with the appropriate Eaton adapter plate.
What wire sizes are accepted by the standard lugs on the GHC3090?
The factory-installed line and load lugs accept wire gauges ranging from 14 AWG to 1/0 AWG. Ensure you use properly rated copper or aluminum conductors as required by standard electrical codes for a 90-amp circuit.
Is the Eaton GHC3090 suitable for reverse feed applications?
Yes, Eaton Series C G-Frame circuit breakers, including the GHC3090, are suitable for reverse feed use. They are also HACR rated for heating, air conditioning, and refrigeration applications.
Can I use the Eaton GHC3090 to replace an older Cutler-Hammer or Westinghouse breaker?
Yes. Eaton acquired both Cutler-Hammer and the Westinghouse distribution equipment lines. The current Eaton GHC3090 is a direct, drop-in replacement for legacy Cutler-Hammer and Westinghouse breakers bearing the exact same GHC3090 catalog number.
Does the GHC3090 provide ground fault or arc fault protection?
No. This breaker features a standard thermal magnetic trip unit designed strictly for overload and short circuit protection. It does not contain GFCI or AFCI circuitry.
What does the 480Y/277VAC voltage rating indicate for installation?
The slash rating of 480Y/277VAC means this breaker is approved for use on solidly grounded wye systems where the line-to-ground voltage does not exceed 277 volts. It is not rated for use on 480V ungrounded or corner grounded delta systems.
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Customers rate this product 5.0 out of 5 based on 1 review.