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disconnect device in some applications, however, it’s still required to have over-current protection installed.
Please refer to typical amperage in the table below for required fuse or breaker size.
The torque rating range for DC terminal is 12.5NM-20.5NM(9.25-15.19 pound-foot), and
the suggested torque rating is 17NM(12.6 pound-foot). Over torqueing may cause the bolt
to break.
Equipment Damage
The inverter is not reverse polarity protected. Reversing the battery polarity on the DC
input connections will cause permanent damage to the inverter which is not covered under
warranty. Always check polarity before making connections to the inverter.
The inverter contains capacitors that may produce a spark when first connected to battery.
Do not mount in a confined a battery or gas compartment.
Ensure the inverter is off before disconnecting the battery cables, and that AC power is
disconnected from the inverter input.
3.4 PV Wiring
CAUTION: Before connecting to PV modules, please install a separate DC circuit breaker between
inverter and PV modules as per the solar charger rating.
The PV terminal pins can accept cable size up to 5AWG (Diameter 4.6mm), and the torque for the
screws is 1.8Nm.
Max. PV Array Open Circuit Voltage is 250Vdc, please make sure Open Circuit Voltage (Voc) of PV
modules does not exceed 250Vd and is higher than 34Vdc.
The PV voltage must be higher than battery voltage to activate charging. There is no voltage boost in the
MPPT module.
PV Array MPPT Voltage Range: 60~245Vdc
Minimal Battery Voltage for PV charge: 34Vdc
Note: The M12048D has two separate 60A MPPT solar chargers which can accept PV input with different
voltages and amperages.
3.5 AC Wiring
We recommend using up to 5AWG(Diameter 4.6mm) wire to connect to the ac terminal block. Use the
heavier gauge if you can.
Before connecting to AC input power source, please install a separate AC breaker between inverter and AC
input power source. This will ensure the inverter can be securely disconnected during maintenance and fully
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