External Breakers - Toshiba G8000 Series Installation Manual

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.
Capacity
100kVA
125kVA
150kVA
180kVA
225kVA
250kVA
300kVA
Table 11.9 External Breaker Rating.
AC input / Bypass input / AC output
Minimum Breaker Rating
480V - 150A
380V - 250A
480V - 225A
380V - 350A
480V - 350A
380V - 500A
480V - 450A
Minimum Breaker Rating
500VDC – 400A
500VDC – 600A
500VDC – 600A
500VDC – 750A
500VDC – 900A
500VDC – 1100A
500VDC – 1,200A
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DC input