enphase IQ System Controller 3M Quick Install Manual page 17

Section B - Mounting the breakers
Breaker for NFT and IQ Gateway
The IQ System Controller 3M comes pre-installed with a quad
breaker (Siemens or Eaton) for the neutral forming transformer
(NFT) and IQ Gateway.
NFT pre-wired to 40 A terminal of the quad breaker.
Connect IQ Gateway L1 and L2 to the 20 A L1 and L2
terminals of the quad breaker, respectively.
NOTE: The cable used to connect IQ Gateway power
terminals to the quad breaker must adhere to local
electrical codes.
Storage breaker
Use the factory-installed
hold-down kit along with a
correctly sized breaker
Solar breaker
Use the factory-installed
hold-down kit along with a
correctly sized breaker
Pre-wired red and black wires
Connect to storage and solar
breakers
E N P H A S E B R E A K E R PA R T
BRK-20A-2P-240V
BRK-40A-2P-240V
BRK-60A-2P-240V
BRK-80A-2P-240V
BRK-20A40A-4P-240V
IQ System Controller 3M quick install guide
Hold-down kit screw
E ATO N B R E A K E R PA R T TO R Q U E
BR220
BR240
BR260 27 lb.in
BR280
BQC220240
Siemens breaker
L1 - NFT
L1 - IQ Gateway
L2 - IQ Gateway
L2 - NFT
Eaton breaker
L1 - IQ Gateway
L1 - NFT
L2 - NFT
L2 - IQ Gateway
Hold-down kit arm
The following alternate breakers are approved for use in
the Eaton load center:
M A N U F A C T U R E R
GE/ABB
Siemens
Siemens (quad breaker)
WARNING: IQ System Controller with
8 AWG wire on NFT L1 & L2 can be
used with either the Eaton or Siemens
quad breaker.
IQ System Controller with 6 AWG
wires on NFT L2 can be used with only
the Eaton quad breaker.
Solar or storage breaker
Use the factory-installed hold-
down kit, along with a correctly
sized breaker
M O D E L S E R I E S C U R R E N T R AT I N G
THQL21xx
20/40/60/80 A
Q2xx
20/40/60/80 A
Q24020CT2
20/40 A
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