User Manual

3
How choose Two-pole Circuit Breaker and Wires
Models
S3-30A
S3-40A
S3-50A
S3-60A
Pure copper wires
6mm²/9AWG
6mm²/9AWG
2PCS 6mm²/9AWG
2PCS 6mm²/9AWG
Circuit Breaker
2PCS 63A
2PCS 63A
2PCS 63A
2PCS 100A
Warning
 Be aware that only qualified professionals should install these controllers. Please read full
manual before installing. Please don’t set any parameters if you are not a professional
installer. The controller will work well on defaults for Lead acid. Lithium battery require
parameter change.
 The controllers should be installed indoors only. Keep controller away from water. Don’t
use wet towel to wipe controller.
 Never open the controller case without permission. Never reverse input PV polarity.
Never reverse the battery polarity. Never overpower input PV.
 The controller can't connect 110V or 240V or any other AC appliances in the OUT+, OUT-
terminal. The output is only for DC load current less than 5A. If your battery is 48V, then
load should be 48V and current less than 5A.
 Must use two-pole circuit breakers, and make sure the input and output are using
separate circuit breakers.
 Use the pure copper wires and connect all polarity correctly.
 Please don’t insert any meter or other devices between controller and battery or controller
and PV.
 It’s important to open terminal lugs 100% before inserting wire into terminal block. Then
tighten and recheck to make sure wires are secure.
 Please note that running maximum wattage could be a hazard if atmospheric conditions
allow for PV array to over power unit. There are times that a 2880 rated PV array can
produce in excess of 3400 watts. This can damage controller. It is best to allow room for
that occurance.
 Please refer to an awg wire size calculator to properly size your wire from your PV, Battery,
and Inverter. When in doubt, larger size wire is always a better choice.