The Eaton BKG3G300 main breaker kit is built for a bolt-on bus connection. It has a 300A rated current and a 35kA interrupting rating at 480VAC. It has 3 poles, a PDG33G breaker type and phase ratings of 1 and 3. The kit measures 5 in high, 22 in long and 9 in wide, with UL and NEMA approvals.
How should I use the 300A rating when selecting the Eaton BKG3G300?
The Eaton BKG3G300 has a rated current of 300A. Use that rating with the circuit's load calculation and conductor ampacity requirements when selecting the main breaker.
Is the BKG3G300 rated for a 480VAC application?
The BKG3G300 is rated for 480VAC. This addresses the circuit voltage requirement; also check its interrupting rating against the available fault current at the installation point.
How does the 35kA interrupting rating affect breaker selection?
The interrupting rating is 35kA at 480VAC. For a 480VAC installation, the available fault current must not exceed 35kA so the breaker has adequate fault-interruption capacity.
How is the BKG3G300 connected to the bus?
The bus connection is bolt-on, so installation requires a bolted connection to the bus. Plan the installation around that fastening method and follow the applicable tightening instructions.
What pole count and phase configuration should I account for?
The kit has a 3-pole breaker, with phase ratings of 1 and 3. Choose it when the circuit design calls for a three-pole main breaker in a single-phase or three-phase application.
What dimensions should I use when planning the installation layout?
The dimensions are 5 in high, 22 in long and 9 in wide. Use all three measurements when planning the installation layout, keeping required working space separate from the kit's physical dimensions.
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