For detailed information, visit the Electrical IEC section at www.cooperbussmann.com
High Speed Fuses
180
Square Body DC fuses — 2000Vdc: 10-125A
2000Vdc 10-125A
Specifications
DDeessccrriippttiioonn::
High speed fuses for the
protection of DC circuits in equipment.
DDiimmeennssiioonnss::
See dimensions
illustration.
RRaattiinnggss::
Volts: — 1200Vdc
Amps: — 160-420A
IR: — 1200Vdc = 100kA L/R: 15 ms.
AAggeennccyy IInnffoorrmmaattiioonn::
Consult Cooper
Bussmann.
Electrical Characteristics
Arc Voltage
This curve gives the
peak arc voltage, U
L
,
which may appear
across the fuse during
its operation as a
function of the applied
working voltage E
g
.
Power Losses
Watts loss at rated current
is given in the electrical
characteristics. The curve
allows the calculation of
the power losses at load
currents lower than the
rated current. The
correction factor, K
p
, is
given as a function of the
RMS load current, I
b
, in % of the rated current.
Features and Benefits
• Excellent DC performance
• Low arc voltage and low energy let-through (I
2
t)
• Low watts loss
• Superior cycling capability
Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters
Catalog Numbers
170E3976 10 7
170E3970 16 11
170E3950 20 13
170E3951 25 17
1*SKN/246 170E3952 2000 32 22
170E3953 40 27
170E3954 50 34
170E3955 63 43
170E3956 80 50
-SKN/246
Type K
Indicator
Rated
Current
RMS-Amp
Cat. Number Electrical Characteristics
Watt
Loss
(W)
Rated
Voltage
(Vdc)
Fuse
Type
170E3937 20 13
170E3938 25 16
170E3939 32 20
170E3940 40 25
1*SKN/246 170E3941 2000 50 32
170E3942 63 40
170E3943 80 51
170E3944 100 64
170E3945 125 80
-SKN/246
Type K
Indicator
Rated
Current
RMS-Amp
Cat. Number
Electrical Characteristics
Watt
Loss
(W)
Rated
Voltage
(Vdc)
Fuse
Type
2000Vdc / 10 - 125A
Dimensions (mm):
Data Sheet: 170K4538
Microswitch: 170H0239, 170H3030 (gold)
Data Sheet: 170K4900
Microswitch: 170H0239, 170H3030 (gold)
