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Littelfuse LS6R0400 DC Disconnect Switches

Littelfuse LS6R0400 DC Disconnect Switches are energy-efficient, compact disconnect switches that quickly break or resume the flow of current safely to prevent shock hazards when trying to isolate circuits or repair systems. Littelfuse LS6R0400 DC Disconnect Switches feature a total voltage rating of 1500VDC and a current rating of 400A. LS6R0400 is designed for use in a variety of applications including solar/photovoltaic (PV) systems, energy storage systems, and more.

Features

  • 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 a reduced footprint for added design flexibility
  • High-level disconnection insulation provides a barrier to stop conduction when the switch is in off position for added safety
  • Self-cleaning blade contacts eliminate performance degradation (from increased electrical resistance over time) to ensure consistent behavior across the product’s lifespan
  • Internally located “sandwich-type” 2-contact symmetrical design mitigates the electromagnetic force of repulsion to offer enhanced functionality in short-circuit conditions
  • Meets UL 94 flammability requirements with self-extinguishing/non-flammable materials to prevent fires

Applications

  • Solar/PV systems
    • Combiner boxes
    • Recombiner boxes
    • Inverters
  • Energy storage systems
    • Disconnection of batteries
    • Containerized batteries
  • Oil and gas DC drives
  • Railway earthing switches and battery disconnection
  • Uninterruptible power supply switching and isolation of batteries

Specifications

  • 1500VDC voltage rating
  • 400A current rating
  • 10kA short-circuit current rating
  • -20°C to +50°C ambient temperature
  • Power losses at 400A
    • 10.58W/pole (2 pole)
    • 10.58W total (1 pole)
  • 8000 mechanical operations
  • REACH and RoHS compliant
  • UL 94 V-0 flammability rating, UL 98B & UL 94, UL Guide WHVA, UL Listed E333311, NEC Article 690 for PV systems, IEC-60947-3, CE, and EAC approvals

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Littelfuse LS6R0400 DC Disconnect Switches