5-2-6 NO-FUSE BREAKER
The no-fuse breaker prevents AC output overcurrent and
shortcircuit overcurrent.
Some models have one no-fuse breaker, and the others have
two. The single no-fuse breaker protects the generator from
maximum current; and the double no-fuse breakers protect
the generator from maximum current, and its receptacles.
If the generator is operated for long above the maximum
current, the internal temperature of the generator abnormal-
ly rises to cause insulation deterioration, burning, electric
NO-FUSE BREAKER
shock, and electric leakage. The no-fuse breaker protects
FUSE HOLDER
the generator from such troubles. The receptacles and AC
F&. 5-8
plug have their own rated capacities. (Refer to
5-2-8 RECEPTACLES AND PLUG.)
If they are used above the rated
current, insulation deterioration, buring, electric shock, or leakage can occur.
These troubles are prevented by the no-fuse
breaker.
Table 5-3 shows breaker capacities and protecting objects.
1
Model
@eciiications
N.F.B. Protecting Object
N.F.B.
Protecting Object
11ov
30A Maximum current
RGX305
I
220V. 23OV. 240V
I 15A (2P2E)
Maximum current
RGX305D ( 110/22OV, 120/24OV ! 15A (2P2E) Maximum current
) 50Hz-1 lOV, 60Hz-120V (
30A
1 Maximum current
I
RGX405 !
60Hz-11ov :
35A ! Maximum current
I
I
22OV, 230V
! 20A(2P2E) j
Maximum current I
I
240v
) 15A (2P2E) ’
Maximum current
I
; 110/22OV, 6OHz-120/240V ’ 20A (2P2E) I Maximum current
RGX405D i
5OHz-120/24OV ’ 15A(2P2E) j Maximum current 1
I
50Hz-11OV. 6OHz-120V
40A
; Maximum current
30A
, 30A Receptacle
RGX505 :
22OV. 230V 25A(2P2E) i Maximum current
240V / 20A(2P2E) Maximum current
60Hz-11 ov 45A / Maximum current 30A 30A Receptacle
i
RGX505D 1
110/22OV, 6OHz-120/240 25A (2P2E) 1 Maximum current 20A (2P2EI
3OA Receptacle
5OHz-120/24OV 20A (2P2E) 1 Maximum current
Table 5-3
l
2P2E means the bipolar doubleelemenr type, and if either of tw pairs
of currents running through tie no-fuse breaker exceeds the rated cur-
rent, the no-fuse breaker operates to turn power off.
The 22OV. 23OV, and 240V types use tie two pairs connected in series,
and the 1oOV and 120V type have them connected in parallel.
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