Data according to IEC 60947-3, VDE 0660, GB14048.3 (CCC)
Utilization category DC-PV2
Main contacts
Type
LS55
Rated thermal current Ith
A
55
over-current
breaking
capability 4)
Rated insulation voltage Ui
1)
V
1500
Rated insulation voltage Ui 2)
V
-
Rated operational current Ie 3)
300V A 55
220
400V A 40
160
1 pole
500V A 25
100
(valid for DC+ and
600V A 13
52
DC- each)
700V A 10
40
800V
A
8
32
900V
A
6
24
1000V
A
4
16
500V A 85
340
2 poles in series
600V A 75
300
+ 2 poles parallel
700V A 60
240
(valid for overall system)
800V A 49
196
900V A 35
140
1000V
A 25
100
1) Suitable at overvoltage category I to III, pollution degree 3 (standard-industry): Uimp = 8kV.
2) Suitable at overvoltage category I to III, pollution degree 2 (min. IP55): Uimp = 8kV.
3) Suitable for use in photovoltaic systems
4) as per IEC 60947-3 Table D.5 (5 operating cycles)
TECHNICAL DATA DC-SWITCH
FRONIUS ECO 25.0-3-S to 27.0-3-S
LS55 E 7898 (43,0002,0499)
02/2011 1/2
TEMPERATURE DERATING
Due to this DC Switch being integral to the inverter, the inverter’s own output power temperature derating factor
needs to be considered (see inverter Datasheet for details).
The DC Switch has no current capability derating factor up to an ambient temperature of +65°C.
ALTITUDE DERATING
0 to 2.000m: 1x Ie
2.001 to 2.500m: 0,975 x Ie
2.501 to 3.000m: 0,950 x Ie
3.001 to 3.500m: 0,925 x Ie
3.501 to 4.000m: 0,900 x Ie
4.001 to 4.500m: 0,875 x Ie
4.501 to 5.000m: 0,850 x Ie
02/2011 2/2
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