Eaton Magnum DS MDS840 Circuit Breaker ~ 4000 Amp MDS8403WEA

by Eaton / Cutler Hammer


EATON Magnum DS MDS840 Circuit Breaker


Magnum DS Catalog Breakdown
MD - Magnum DS Breaker
S - Standard Frame
8 - Interrupting/ Withstand Rating @ 85k
40 - 4000 Amp Frame (ABCABC)
3 - 3 Pole
W - Drawout Frame
E - English Nameplate
A - Non-DSL
40- 4000 Amp Sensors and Rating Plug
5G - 520 (LSIG)
A - 110–127 Vac/Vdc Shunt Trip
N - 110–125 Vac (5-sec) Motor
A - 110–127 Vac/Vdc Spring Release Device
N - No UVR Device
4 - 4A/4B Auxiliary Switch
Y -  Mech Trip Indicator / Bell Alarm/OTS
N - No Padlocks
A - Operations Counter
N - No Latch Check Switch
A - Shipping Options
X - Future Breakers

Digitrip 520 Cat#: 5LSIG
Rating Plug Cat#: 5720B33G19

NAS can modify breaker to match your accessory needs. Message us your Catalog # to see if we can match your needs!

Each Unused Surplus MDS820 is Tested with Report and Backed by Our One Year Warranty.

Standard lead time (1-3) days prior to shipping. If item is needed sooner please call or email.

Must ship via freight on a pallet. Please contact for freight quote.

Call 800-909-3660 or email with questions.

After hours emergency hotline 216-402-0507 or 216-570-2725

NASG15762  Location: 6440B,A

North American Switchgear, Inc. is an industry leader in the sale of new, used and out-of-production industrial circuit breakers, switchgear and associated parts.  Our Cleveland, OH facility spans over 300,000 square feet and houses over 13,000 low and medium voltage circuit breakers from all major manufacturers.  Aside from the sale of circuit breakers, switchgear and replacement parts, NAS also offers equipment recondition and repair services.  For more information please visit our website at, call 800-909-3660 or email

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