Dc Disconnect Switch
LS60400 SERIES
500 V Dc • 400 A
REACH
Specifications
UL 98B Standards
Total Voltage Rating
Amperage Rating
SCCR Rating
500 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 2L
Dc Ungrounded
Type 1V
Rating Uimp
Operational Current
12 kV
Dc Grounded with Handle Attached
DC21B Rating
400 A/500 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
18.4 watts
Description
300 kcmil/MCM (152 mm2)
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.
350 kcmil/MCM (177 mm2)
1
8,000
212 lbf-in (24 N
Features/Benefits
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•m)
Plastic housing
Streamline design eliminates the need for external
Silver-plated copper terminals
Screws
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
bridging links (jumpers) to lower heat dissipation for
increased energy efficiency, decreased installation and
maintenance time, and reduced footprint for added
design flexibility
High-level disconnection insulation provides a barrier to
stop conduction when switch is in off position for
added safety
Base Mounting
Flammability Rating
Approvals
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The self-cleaning blade contacts eliminate performance
degradation (from increased electrical resistance over
time) to ensure consistent behavior across the
product’s lifespan
Environmental
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The internally-located "sandwich-type" 2-contact
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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Panel handle with shaft LDSLA21 for closed panel
Applications
door access
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Solar/PV systems: combiner boxes, recombiner boxes
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Direct handle LDSLI21 for open panel door access
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and inverters
Auxiliary contacts LD5LAU01 remotely indicate
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Energy storage systems: disconnection of batteries,
switch position
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Phase barriers LDRSF21 (Type 1V) and LDRSF22
containerized batteries
Oil & gas: dc drives
Railway: earthing switches and battery disconnection
UPS: switching and isolation of batteries
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(Type 2L) isolate sections to eliminate arcing between
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)
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Electrical vehicle chargers
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Terminal shrouds LDRCU21W offer protection against
direct contact after wiring
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Spacers LREL21W increase distance between switch and
mounting plate
Littelfuse.com/DcDisconnectSwitch
© 2021 Littelfuse, Inc.
Rev: 072021
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