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Arc Quenching Magnum DS low-voltage switchgear
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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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Learn more about low-voltage switchgear View Plant Engineering Product of the Year submission Check out the fundamentals of low-voltage controls
VOLTAGE CLASS
Up to 600 V
CONTINUOUS CURRENT
Up to 6000 A
SHORT-CIRCUIT WITHSTAND
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 Recognized 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

Download guide specification (26 23 00)

Learn more about power system design basics

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
Question mark - orange icon
Frequently asked questions about Arc Quenching Switchgear
Calculator - orange icon
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 minimizes 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 utilizes 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.

Automatic Transfer Schemes

When providing redundant power sources for critical power applications, specify the:

- Eaton ATC-900 controller for lineups with main-main, main-generator or generator-generator applications

- Eaton PLC with Eaton touchscreen for automatic main-tie-main transfer

- Eaton Power Xpert™ Dashboard to monitor or control transfer schemes for a main-tie-main and adjust settings and sequence details

Modernize and extend the life of Magnum DS low-voltage switchgear

Genuine Magnum DS switchgear accessories and replacement parts improve the reliability, safety and longevity of the switchgear.
Accessories and replacement parts

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Eaton is a power management company with 2018 sales of $21.6 billion. We provide energy-efficient solutions that help our customers effectively manage electrical, hydraulic and mechanical power more efficiently, safely and sustainably. Eaton is dedicated to improving the quality of life and the environment through the use of power management technologies and services. Eaton has approximately 101,000 employees and sells products to customers in more than 175 countries.
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