Eaton ARRAY 3A3 Pro, Manual

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Note:
1. The conductor cross sections above apply for theoretical maximum currents in consideration of protective
devices.
2. *n represents the number of the wire, which indicates that n same AWG wires are needed. For example,
“2AWG*3”indicates that three 2 AWG wires are needed.
3. The diameter of the earth wire needs to be the same as the N wire.
5.2 Requirements of protective devices
The 3A3 Pro UPS supplies no breakers or protective components with its cabinet for input (including battery
input). For output, only breakers are connected in the cabinet and no protective components are supplied.
When installing the 3A3 Pro UPS, the user needs to connect the external breakers and protective components
in the input and output terminals. It is recommended to select the NFB instead of the traditional combination
kit including breaker and fuse.
The voltage and current should be taken into consideration when selecting NFB. And it is recommended to
select it according to the real capacity of the UPS (the modules installed) to ensure effective protection. Please
refer to the table below for UPS module and corresponding NFB requirements.
Note: it is recommended to choose three-pole NFBs (linked breaker) for the input and output of the UPS and
a three-pole NFB (linked breaker) for the battery. Refer to the Section 5.3 and Section 5.4 in this manual for
detailed information.
UPS
Module
UPS Input NFB UPS Output NFB Battery NFB
Voltage/Current Voltage/Current Voltage/Current
1 3φ 40A/ 250VAC 3φ 40A/ 250VAC 3φ 40A/ 500VDC
2 3φ 80A/ 250VAC 3φ 80A/ 250VAC 3φ 80A/ 500VDC
3 3φ 120A/ 250VAC 3φ 120A/ 250VAC 3φ 120A/ 500VDC
4 3φ 160A/ 250VAC 3φ 160A/ 250VAC 3φ 160A/ 500VDC
5 3φ 200A/ 250VAC 3φ 200A/ 250VAC 3φ 200A/ 500VDC
6 3φ 240A/ 250VAC 3φ 240A/ 250VAC 3φ 240A/ 500VDC
7 3φ 280A/ 250VAC 3φ 280A/ 250VAC 3φ 280A/ 500VDC
8 3φ 320A/ 250VAC 3φ 320A/ 250VAC 3φ 320A/ 500VDC
9 3φ 360A/ 250VAC 3φ 360A/ 250VAC 3φ 360A/ 500VDC
10 3φ 400A/ 250VAC 3φ 400A/ 250VAC 3φ 400A/ 500VDC