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Low-voltage switchgear

Arc Quenching Magnum DS low-voltage switchgear

Eaton Arc Quenching Switchgear reduces incident energy to a level where the switchgear will survive an electrical arc flash event, while providing enhanced safety and minimal equipment downtime.  Arc Quenching switchgear meets and exceeds the arc-resistant testing requirements of C37.20.7 by demonstrating acceptance even when breakers are removed, doors are open, covers are removed, and without the need for ducts, plenums or special enclosure construction.

Watch the Arc Quenching Switchgear video overview.

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Find out more about low-voltage switchgear View Plant Engineering Product of the Year submission
VOLTAGE CLASS
Up to 600 V
CONTINUOUS CURRENT
Up to 6000 A
SHORT-CIRCUIT TOLERANCE
Up to 100 kA

Core features

  • Third party tested to ANSI/IEEE C37.20.7, Type 2B arc-resistant test guide in standard NEMA 1 construction
  • Arc Quenching Device is a UL Recognised Component per UL 2748 for arcing fault quenching equipment
  • Short circuit withstand rating up to 100 kA
  • <4 ms arc quenching time
  • Reduces incident energy to below 1.2 cal/cm2, per IEEE 1584, Guide for Performing Arc-Flash Hazard Calculations
  • Current limiting – at least 25% reduction in peak fault current
  • At least 44% reduction in peak system stress
  • Complete system self-supervision with health status communicated via Modbus and dry contacts
  • Anti-nuisance trip technology
  • Engineered-to-order configurations
  • UL 1558
  • Available in rear access and front access switchgear configurations
  • Available in NEMA 1, NEMA 3R and traditional arc-resistant enclosure types  

View design guide (layouts, technical data and application information)

Download guide spec (26 23 00)

Learn more about power system design basics

Learn more about Arc Quenching Switchgear from our educational video series.

    Image gallery

    View images of Arc Quenching Magnum DS low-voltage switchgear

    Arc Quenching Device removal Arc Quenching System
    Arc Quenching Magnum DS low voltage switchgear Arc Quenching System
    Arc Quenching Magnum DS low voltage switchgear
    Instrument compartment with Eaton Arc Flash Relays Arc Quenching System
    Installed Arc Quenching Device Arc Quenching System
    Drawout Arc Quenching Device Arc Quenching System
    Arc Quenching Device Arc Quenching System
    Frequently asked questions about Arc Quenching Switchgear
    Electrical arc flash calculation studies

    Reduced incident energy

    Arc Quenching Switchgear detects and extinguishes an electrical arc flash in less than 4 ms dramatically reducing incident energy below 1.2 cal/cm² and reacting 10x faster than systems that rely solely on circuit breakers to clear an arc fault, including maintenance switches, zone selective interlocking (ZSI), bus differential relaying and arc detection relays.

    Enhanced arc flash safety

    Arc Quenching Switchgear meets and exceeds ANSI/IEEE C37.20.7 Type 2B arc-resistant testing requirements with breakers removed and breaker, secondary or cable compartment doors open, delivering the highest level of arc flash protection without the need for ducts, plenums, special enclosure construction or venting into the room.

    Switchgear arc protection

    Arc Quenching Switchgear minimises or eliminates damage to switchgear in the event of an arc fault, protecting valuable switchgear assets from electrical arc flash damage. It is designed to reduce peak fault current by at least 25% and peak stress on upstream equipment by at least 44% when compared to a bolted fault device.

    Reduced downtime

    Arc Quenching Switchgear employs the Eaton Arc Flash Relay which utilises advanced algorithms to prevent nuisance tripping of the Arc Quenching Device (AQD). Should an electrical arc flash occur, restoring service can be accomplished within hours.

    Related products

    Specifications

    View design guide (layouts, technical data and application information)

    Download guide spec (26 23 00)

    Learn more about power system design basics

    Ratings

    VOLTAGE
    		 Up to 600 V
    CONTINUOUS MAIN BUS CURRENT 1,600 A to 10,000 A
    SHORT-CIRCUIT TOLERANCE Up to 100 kA
    CIRCUIT BREAKER AMPS Up to 6,000 A

    Standards

    ANSI/IEEE C37.20.1, C37.51, C37.20.7
    UL
    		 1558, 1066, 2748
    CSA
    		 C22.2 No 31–10
    OTHER CERTIFICATION ABS
    SEISMIC QUALIFICATION IBC, CBC, UBC Zone 4

    Enclosure

    CONSTRUCTION
    		 Metal-enclosed
    POWER TERMINATIONS Rear access, Front access
    INSULATING MEDIUM
    		 Air
    ENCLOSURE TYPE NEMA 1 indoor, NEMA 3R outdoor
    INDOOR SECTION DIMENSIONS 18-60” w x 40-90” d x 96” h

    Devices

    OVERCURRENT PROTECTION Power circuit breaker, UL 1066
    DEVICE MOUNTING Drawout
    Download Links

      • Arc Quenching low-voltage switchgear (AQS) design guide
        This design guide provides dimensions, layout examples, technical specifications and application information for Arc Quenching switchgear. The information in this document supersedes section 20 of the Consulting Application Guide (CAG).
        (PDF 648 KB , 08/09/2021)
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