Table 3-7. Recommended Input And Bypass Circuit Breaker Ratings; Table 3-8. Recommended Output Circuit Breaker Ratings - Eaton 93PM Installation And Operation Manual

UPS Installation Plan and Unpacking
External overcurrent protection and disconnect are not provided by this product, but are required by codes. See
Table 3-4 for wiring requirements. If an output lockable disconnect is required, it is to be supplied by the
customer.
Table 3-7 lists the recommended rating for input and bypass circuit breakers.

Table 3-7. Recommended Input and Bypass Circuit Breaker Ratings

To reduce the risk of fire, connect only to a circuit provided with maximum input
circuit breaker current ratings from Table 3-7 in accordance with the NEC, ANSI/NFPA 70.
The line-to-line unbalanced output capability of the UPS is limited only by the full load per phase current values
for AC output to critical load shown in Table 3-4. The recommended line-to-line load unbalance is 50% or less.
Bypass and output overcurrent protection and bypass and output disconnect switches are to be supplied by
the customer. Table 3-8 lists the recommended rating for output circuit breakers.

Table 3-8. Recommended Output Circuit Breaker Ratings

3-16 Eaton 93PM Emergency Lighting UPS (20–40 kW, 480V Four Wire – UL 924) Installation and Operation Manual P-164000569—Rev 2
UPS Model
Eaton 93PM-50-1
Eaton 93PM-50-1
Eaton 93PM-50-1
UPS Model
Eaton 93PM-50-1
Eaton 93PM-50-1
Eaton 93PM-50-1
UPS Rating Load Rating
80% Rated
20 kW
100% Rated
80% Rated
30 kW
100% Rated
80% Rated
40 kW
100% Rated
CAUTION
UPS Rating Load Rating
80% Rated
20 kW
100% Rated
80% Rated
30 kW
100% Rated
80% Rated
40 kW
100% Rated
Input Rating
480V
70A
50A
80A
70A
100A
80A
Output Rating
480V
35A
25A
50A
40A
70A
50A
www.eaton.com/powerquality