Toshiba G8000 Series installation manual External Breakers, External Breaker Rating

11.3 External Breakers

The G8000 UPS units are not equipped with circuit breakers. The electrical contractor should provide the external breakers for AC input, Bypass input, DC input, and AC output. See Figure 11.1 for the position of the breakers.

Table 11.9 shows the minimum rating for each capacity of G8000 UPS breakers. The Bypass input and the AC output require 4-pole breakers.

Table 11.9 External Breaker Rating.

	AC input / Bypass input / AC output	DC input
Capacity	Minimum Breaker Rating	Minimum Breaker Rating
100kVA	480V - 150A	500VDC – 400A
125kVA	380V - 250A	500VDC – 600A
150kVA	480V - 225A	500VDC – 600A
180kVA	380V - 350A	500VDC – 750A
225kVA	480V - 350A	500VDC – 900A
250kVA	380V - 500A	500VDC – 1100A
300kVA	480V - 450A	500VDC – 1,200A

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