Eaton/Cutler-Hammer NGH312033E Circuit Breaker

No, this breaker is supplied with standard imperial tapped line and load pads. If you need to terminate cables, compatible lug kits must be purchased separately. Common options include the TA1200NB1 kit for four 4/0 to 500 kcmil conductors per phase, or the TA1201NB1 kit for three 500 to 750 kcmil conductors.

The "33" suffix signifies a Digitrip 310+ electronic trip unit with adjustable Long-Time and Short-Time (LS) protection. The Short-Time delay utilizes an I2t response curve. While it has a fixed instantaneous override for self-protection at extremely high fault levels, it does not feature user-adjustable instantaneous or ground fault settings.

No, this is a standard 80% rated circuit breaker. For continuous loads lasting three hours or more, the continuous current should not exceed 80% of its 1200A frame capacity (960 amps). Eaton designates 100% rated breakers in this series with a "C" suffix in the catalog number.

Yes, Eaton NG-frame electronic molded case circuit breakers are suitable for reverse feed use. They can be wired with the line or load connections on either side without compromising the performance of the Digitrip 310+ protection system.

The "E" suffix on the NGH312033E indicates it is equipped with imperial tapped line and load conductors. The "M" suffix indicates metric tapped conductors. Both are 1200A, 3-pole NG-frame breakers with identical electrical ratings.

Yes, the Digitrip RMS 310+ electronic trip unit features a built-in test port. Electricians can use an Eaton portable test kit to run functional tests on the Long-Time and Short-Time protection circuits without needing to pass primary current through the breaker.