Belonging to the Power Defense series, the Eaton PDG53K1200E3RN is a 1200A, 3-pole MCCB designed for demanding commercial and industrial applications. This unit mount breaker installs into Eaton Pow-R-Line panelboards and switchboards, serving as a replacement for legacy NGS31200 and ND31200 models. Delivering a 50 kAIC rating at 480V, it features a PXR20 electronic trip unit with adjustable LSIG functions, providing precise coordination and ground fault protection.
Can I use the PDG53K1200E3RN to upgrade older Cutler-Hammer 1200A breakers?
Yes, this Power Defense Frame 5 breaker serves as a modernized replacement for legacy Eaton and Cutler-Hammer NGS31200 and ND31200 molded case circuit breakers.
What equipment is the PDG53K1200E3RN designed to be installed in?
This breaker is engineered for integration into Eaton Pow-R-Line panelboards, industrial switchboards, and motor control centers requiring a 1200A main or feeder device.
How does the LSIG electronic trip unit benefit system coordination?
The PXR20 solid-state electronic trip unit features adjustable Long-Time, Short-Time, Instantaneous, and Ground Fault (LSIG) settings. This allows panel builders and electricians to precisely match the trip curve to the facility load profile, ensuring selective coordination and localized ground fault protection.
How is the PDG53K1200E3RN mounted inside an enclosure?
This Frame 5 breaker utilizes a unit mount, bolt-on connection. It must be securely bolted directly to the chassis or bus of a compatible panelboard or switchboard.
Does this breaker provide integrated ground fault protection?
Yes, the G in the LSIG trip unit designation indicates built-in ground fault protection. This eliminates the need for external ground fault relays and sensors in many commercial switchboard applications.
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