With cable diameters greater than 21 mm, the M32 screw joint must be replaced by an
M32 screw joint with a larger clamping area – item number: 42,0407,0780 – strain-relief
device M32 x 1.5 KB 18–25.
Cross section of
the DC cable
Cable diameter for the strain-relief device: max. 9 mm.
Cable diameter for the connection to the push-in terminal: max. 7 mm
IMPORTANT!
For double-insulated cables with a cable diameter over 7 mm, the outer layer of insula-
tion must be removed to connect to the push-in terminal.
Maximum altern-
ating current fuse
protection
NOTE!
National regulations, the grid operator's
specifications or other factors may
require a residual current circuit
breaker in the AC connection lead.
For this situation, a type A residual current
circuit breaker is generally adequate. Nev-
ertheless, false alarms can be triggered for
the type A residual current circuit breaker
in individual cases and depending on local
conditions. For this reason, in accordance
with national legislation, Fronius recom-
mends that a residual current protection
device with a tripping current of at least 30
mA suitable for frequency converters be
used.
IMPORTANT!
The inverter can be fused with max. an
automatic circuit breaker C 63 A.
Inverter Phases AC output Maximum
fuse rating
Recommen-
ded fuse rat-
ing
Fronius Primo GEN24 3.0 kW 1 3000 W C 63 A C 32 A
Fronius Primo GEN24 3.6 kW 1 3680 W C 63 A C 32 A
Fronius Primo GEN24 4.0 kW 1 4000 W C 63 A C 40 A
Fronius Primo GEN24 4.6 kW 1 4600 W C 63 A C 40 A
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