Eaton Cutler Hammer MDLB3400 400A 3 Poles Molded Case Circuit Breaker – Bolt On – 600VAC
SKU: 47480457699

Eaton Cutler Hammer MDLB3400 400A 3 Poles Molded Case Circuit Breaker – Bolt On – 600VAC

Sale price$1349.55 Regular price$1499.50
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Description

Eaton Cutler Hammer MDLB3400 400A 3 Poles Molded Case Circuit Breaker – Bolt On – 600VACThe Eaton Cutler Hammer MDLB3400 molded case circuit breaker is designed to deliver dependable circuit protection for industrial and commercial electrical distribution systems. Featuring the MDLB frame style and a thermal magnetic non interchangeable trip unit, this breaker provides reliable protection against overload and short circuit conditions. With a continuous current rating of 400 amperes at 40C and a 3 pole configuration, it supports AC

The Eaton Cutler-Hammer MDLB3400 molded case circuit breaker is designed to deliver dependable circuit protection for industrial and commercial electrical distribution systems. Featuring the MDLB frame style and a thermal magnetic non-interchangeable trip unit, this breaker provides reliable protection against overload and short-circuit conditions. With a continuous current rating of 400 amperes at 40°C and a 3-pole configuration, it supports AC voltages up to 600VAC and DC applications up to 250VDC. Its bolt-on mounting design ensures secure installation in compatible panelboards and switchgear, while the durable molded case construction ensures long-lasting performance in demanding environments.

Product Specifications

  • Brand: Eaton / Cutler-Hammer
  • Model: MDLB3400
  • Breaker Type: Molded Case Circuit Breaker
  • Frame Type: MDLB (M Frame Style)
  • Trip Unit Type: Thermal Magnetic Non-Interchangeable Trip
  • Amperage Rating: 400 Ampere
  • Number of Poles: 3 Pole
  • Mounting Type: Bolt-On
  • Frequency: 50/60 Hz
  • Standard Lug Type: Not Included / Configurable

Technical Specifications

  • Thermal magnetic trip mechanism for accurate overload and short-circuit protection
  • Non-interchangeable trip unit with fixed protection settings
  • Durable molded case housing for industrial and commercial environments
  • High interrupting capacity for enhanced fault protection
  • Suitable for both AC and limited DC applications
  • Designed for dependable performance in heavy-duty electrical systems

Voltage and Ratings

  • Maximum AC Voltage: 600 VAC
  • Maximum DC Voltage: 250 VDC
  • Interrupting Capacity:
    • 65 kA @ 240 VAC
    • 50 kA @ 480 VAC
    • 25 kA @ 600 VAC
    • 22 kA @ 250 VDC
  • Trip Setting: 5–10 times the continuous ampere rating

Product Data

  • Manufacturer: Eaton / Cutler-Hammer
  • Product Series: MDLB Frame Series
  • Configuration: Molded Case Circuit Breaker
  • Connection Type: Bolt-On
  • Warranty: 1 Year
  • Application: Industrial power distribution, panelboard protection, and heavy-duty electrical circuit protection

Important Note

The product image shown represents a base model and is intended for identification purposes only. Accessories ordered with the breaker can be installed to meet your specific configuration requirements at no additional cost. Please include all required configuration details in the order comment box during checkout to ensure accurate assembly and delivery.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 47480457699

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Verified Purchase
Amazon Customer
Chelsea, US
★★★★★ 3
Missing Dividers
Color: Black, Size: 9.4*4.1*5IN
Disappointed it was missing the adjustable dividers. Not great to hold dishwashing brushes. They slip right threw the side.
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Reviewed in the United States on June 3, 2026
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dr
Alexandria, US
★★★★★ 4
Sturdy. Built to last. It solves all the problems my old organizer had. Very satisfied.
Review for ARTLEO Kitchen Sink Caddy with Super Water Absorbent Diatomite Stone Sink Tray, Fast Drying Sink Organizer with High Dish Brush Holder Sponge Holder for Kitchen Sink, Stainless Steel This appears to be a sturdy organizer of stainless steel painted with a good amount of black protective paint. I ordered it to replace an inferior organizer of the same material (made by a different company altogether). This one solves the problems I had with my previous organizer which had begun to rust and break apart after six months of use. The narrow steel bars on the bottom shelf of this new organizer are supported by wider steel flats in the frame that will prevent them from breaking off the frame. (My old organizer bars broke because they were barely welded onto the frame and the repeated "pushing down" of my soap pump-bottle eventually broke them apart from the frame). The pads that prevent it from sliding across my counter in big waves (we live and travel on a boat) are secured around the steel legs as opposed to just being glued onto the bottom (like the pads of my previous organizer were, which fell off). There is no metal hanging over onto the sink edge to cause rust (like the metal that had caused rust with my old organizer.) The dish-brush holder can fit on the inside of the frame or it can hang on the outside of the organizer, which is nice because it makes more room if you have many tools that you like to use at the sink. And it can be compact if you don't. Be cautious not to remove the hanging part (dish-brush holder) too often because repeated wear can cause the paint to rub off and it could begin to rust. The "Water Absorbent Diatomite Stone" is new to me but it seems to be working just fine. I assume I will have to clean out the ridges of it as gunk forms there, but that would be the case with any sink organizer tray. I am very satisfied with this organizer, it is robust and it solves all the problems I had with my previous one. The price is on the higher side of similar organizers, currently priced at $23.99. All the best, Mrs. dr
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Reviewed in the United States on June 16, 2025
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S. Briggs
Los Angeles, US
★★★★★ 5
Terrific Buy!
Color: Brown, Size: 13"D x 23.7"W x 32.7"H
I couldn't be happier with our new very handy piece of furniture. The tea/bar cart (I chose classic brown with the black iron) looks like a much more expensive purchase than it is. It's well-designed, well-made, and very easy to assemble, even for me: all of the holes, screws, bolts, etc., align perfectly for a level, sturdy, squared, and pleasing cart that can serve a multitude of purposes, depending on your household's needs. I just bought a second. They really are just that versatile and good-looking, and they require little space.
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Reviewed in the United States on March 23, 2026
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Kat
Grantham, US
★★★★★ 5
GREAT
Color: Marble Gold, Size: 13"D x 23.7"W x 32.7"H, Color: Marble Gold, Size: 13"D x 23.7"W x 32.7"H
It was so easy to assemble I’m impressed and it looks so cute and not cheap at all
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Reviewed in the United States on May 29, 2026
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Janie McCue
Birmingham, US
★★★★★ 5
No complaints
Color: Brown, Size: 13"D x 23.7"W x 32.7"H
This is a great bar cart. The shelves hold up with a bunch of bottles on it. To be fair, we do not wheel it around. It just stays in one spot.
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Reviewed in the United States on May 18, 2026

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