Dc Disconnect Switch
LS60400 SERIES
1000 V Dc • 400 A
REACH
Specifications
UL 98B Standards
Total Voltage Rating
Amperage Rating
SCCR Rating
1000 V dc
400 A
10 kA
Ambient Temperature
IEC 60947-3 Standards
-20 to 50 °C (-4 to 122 °F)
Insulation Voltage Rating Ui 1500 V dc
Impulse Withstand Voltage
Type 2E
Dc Ungrounded
Type 1M
Dc Grounded with Handle Attached
Rating Uimp
Operational Current
12 kV
DC21B Rating
400 A/1000 V dc
Other Characteristics
Power Losses at 400 A
Minimum Connection
Wire Range/AWG
Maximum Connection
Wire Range/AWG
Number of Circuits/Switches
Mechanical Operations
Tightening Torque
Material
36.11 watts
Description
The Littelfuse LS6 dc series is an energy-efficient, compact
disconnect switch that quickly breaks or resumes the flow
of current safely to prevent shock hazards when trying to
isolate circuits or repair systems.
300 kcmil/MCM (152 mm2)
350 kcmil/MCM (177 mm2)
1
8,000
212 lbf-in (24 N
Plastic housing
Silver-plated copper terminals
Screws
Features/Benefits
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•m)
Streamline design eliminates the need for external
bridging links (jumpers) to lower heat dissipation for
increased energy efficiency, decreased installation and
maintenance time, and reduced footprint for added
design flexibility
Base Mounting
Flammability Rating
Approvals
UL 94 V-0
UL 98B & UL 94
UL Guide WHVA
UL Listed E511898
NEC Article 690 for PV systems
IEC-60947-3
CE
EAC
RoHS compliant
REACH
Spain
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High-level disconnection insulation provides a barrier to
stop conduction when switch is in off position for added
safety
The self-cleaning blade contacts eliminate performance
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degradation (from increased electrical resistance over
time) to ensure consistent behavior across the product’s
lifespan
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The internally-located "sandwich-type" 2-contact
Environmental
symmetrical design mitigates the electromagnetic force
of repulsion to offer enhanced functionality in short-
circuit conditions
Country of Origin
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Meets UL 94 flammability requirements with self-
extinguishing/non-flammable materials to prevent fires
Recommended Accessories
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Applications
Panel handle with shaft LDSLA21 for closed panel
door access
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Solar/PV systems: combiner boxes, recombiner boxes
and inverters
Energy storage systems: disconnection of batteries,
containerized batteries
Oil & gas: dc drives
Railway: earthing switches and battery disconnection
UPS: switching and isolation of batteries
Electrical vehicle chargers
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Direct handle LDSLI21 for open panel door access
Auxiliary contacts LD5LAU01 remotely indicate
switch position
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Phase barriers LDRSF21 (Type 1M) and LDRSF23
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(Type 2E) isolate sections to eliminate arcing between
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the phases
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Terminal lug LDRTL22W safely connects electrical and
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mechanical devices (phase barriers must be used in order
to maintain the required clearance)
Terminal shrouds LDRCU23W offer protection against
direct contact after wiring
Spacers LDREL21W increase distance between switch
and mounting plate
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Littelfuse.com/DcDisconnectSwitch
© 2021 Littelfuse, Inc.
Rev: 072021
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