NEW Summer 2026 SuperGear! SuperPoints Accepted »

Siemens MXD63B800H - 800A 3 Pole Molded Case Circuit Breaker

Brand Siemens
SKU MXD63B800H
Free Shipping Over $99

Siemens MXD63B800H - 800A 3 Pole Molded Case Circuit Breaker

Brand Siemens
SKU MXD63B800H
Select Item Condition
Earn 5765 SuperPoints

Quantity
Planning a Big Order?
Bulk pricing available—let us know your needs for a quote.
Get a quote
Shop with Confidence
Enjoy a free 60-day warranty, extendable to 1 year at checkout.
Learn more

Siemens MXD63B800H - 800A 3 Pole Molded Case Circuit Breaker

New

$5765.20 In stock

Quantity

DescriptionSpecificationsSuperClubWarranties
Description
Handling high-amperage industrial loads, the Siemens MXD63B800H is a 3-pole, 800A molded case circuit breaker. It provides reliable thermal-magnetic protection for demanding commercial and manufacturing environments. This MD-frame breaker features a unit mount configuration, fitting Siemens Sentron S4 and S5 panelboards, as well as SB-series switchboards. Rated for 50kAIC at 480VAC, this 100% rated breaker includes an adjustable magnetic trip ranging from 4000A to 8000A for precise control.

Specifications

Brand Siemens
Series MXD6
Part Number MXD63B800H
Amperage 800A
Voltage 240VAC, 480VAC, 600VAC, 250VDC
Poles 3
Phase 3
AIC Rating 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC, 25kA @ 250VDC
Mounting Style Unit Mount
Terminal Type Lugs
For Use With Siemens Sentron Panelboards (Type S4, S5), Switchboards (SB1, SB2, SB3), Motor Control Centers
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Adjustable Magnetic
Wire Gauge (3) 1/0 AWG - 500 kcmil
Max Wire 500 kcmil
Min Wire 1/0 AWG
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lug Kits, Rotary Handle, Motor Operator
Accessories Mounting Hardware
Standards CSA C22.2 No. 5, IEC 60947-2, UL 489
Approval CSA, HACR, UL
Temp Rating 40C
Construction Features 100% Rated, Reverse Feed, Non-Interchangeable Trip, Trip-Free Mechanism, HACR Rated

SuperClub

Get rewarded every time you shop! Join SuperClub for free and start earning points on every purchase, unlocking exclusive discounts, special promos, and VIP perks. Already a member? Keep shopping to level up your rewards and enjoy even more benefits, including faster shipping, extended returns, and premium offers.

Learn more about SuperClub

Warranties

We’ve got you covered!

When shopping with SuperBreakers, you’ll have peace of mind knowing that every single item you purchase includes a 60 day warranty, free of charge. Why such confidence? Because only the highest quality electrical parts have a place on our shelves, and we stand by every single one we sell.

If anything goes wrong with your item that is not a result of misuse or normal wear and tear, we’ll gladly replace it at no cost to you.

Click here to read our full warranty details

Shipping

Free Shipping Policy

Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.

Click here to read our full shipping policy
Same Day Shipping

We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments

Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping

All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.

Related Products

Recently Viewed