Description

The Littelfuse LS7R 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. It is a 1500 V dc disconnect for

ungrounded systems.

Features/Benefits

The patented operation system minimizes damage

caused by arcs upon disconnection to increase product

reliability and longevity

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

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

degradation (from increased electrical resistance over

time) to ensure consistent behavior across the

product’s lifespan

The internally-located sandwich-type 2-contact

symmetrical design mitigates the electromagnetic force

of repulsion to offer enhanced functionality in shortcircuit

conditions

Meets UL 94 flammability requirements with selfextinguishing/

non-flammable materials to prevent fires

Applications

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