SKU: 88130700219

Eaton Cutler Hammer LDB3300 300A 3-Pole Molded Case Circuit Breaker – Bolt-On Mount – 600V

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Description

Eaton Cutler Hammer LDB3300 300A 3-Pole Molded Case Circuit Breaker – Bolt-On Mount – 600VThe Eaton Cutler Hammer LDB3300 molded case circuit breaker is engineered to provide dependable protection for industrial and commercial electrical distribution systems. Built on the LDB frame platform, this breaker features a thermal magnetic non interchangeable trip unit designed to protect circuits from overloads and short circuit conditions. Rated at 300 amperes with a 3 pole configuration, the breaker supports AC systems up to 600VAC and DC

The Eaton Cutler-Hammer LDB3300 molded case circuit breaker is engineered to provide dependable protection for industrial and commercial electrical distribution systems. Built on the LDB frame platform, this breaker features a thermal magnetic non-interchangeable trip unit designed to protect circuits from overloads and short-circuit conditions. Rated at 300 amperes with a 3-pole configuration, the breaker supports AC systems up to 600VAC and DC systems up to 250VDC. It is also suitable for reverse feed applications, providing installation flexibility in various power distribution setups. With high interrupting capacity and a secure bolt-on mounting design, the LDB3300 is well suited for switchboards, panelboards, and heavy-duty electrical systems.

Product Specification

  • Brand: Eaton / Cutler-Hammer
  • Model: LDB3300
  • Amperage: 300 Ampere
  • Number of Poles: 3 Pole
  • Breaker Type: Molded Case Circuit Breaker (MCCB)
  • Mount Type: Bolt-On
  • Rated Voltage: Up to 600V AC / 250V DC
  • Frame Type: LDB Frame
  • Warranty: 1 Year

Technical Specification

  • Trip Unit Type: Thermal Magnetic Non-Interchangeable Trip Unit
  • Trip Setting Range: Adjustable 5–10 times continuous ampere rating
  • Connection Type: Bolt-On
  • Terminal Type: Aluminum line and load end terminals standard
  • Temperature Rating: 300A at 40°C
  • Reverse Feed Capability: Suitable for reverse feed installation
  • Protection Type: Overload and Short Circuit Protection
  • Application: Industrial and commercial power distribution systems

Voltage and Ratings

  • Maximum Operating Voltage: 600 VAC / 250 VDC
  • Rated Current: 300 Ampere
  • Interrupting Ratings:
    • 65 kA @ 240 VAC
    • 35 kA @ 480 VAC
    • 25 kA @ 600 VAC
    • 22 kA @ 250 VDC
  • Frequency Rating: 50/60 Hz for AC systems

Product Data

  • Manufacturer: Eaton / Cutler Hammer
  • Product Category: Molded Case Circuit Breaker
  • Frame Series: LDB Frame
  • Pole Configuration: 3 Pole
  • Mounting Method: Bolt-On
  • Terminal Type: Aluminum line and load end terminals standard
  • Protection Mechanism: Thermal Magnetic
  • Typical Applications: Industrial switchgear, commercial distribution panels, and heavy-duty electrical installations

Important Note

The product image shown may represent a base model and is intended for identification purposes only. Accessories purchased with your breaker can be installed according to your required configuration at no additional cost when instructions are provided during checkout. Installation should always be carried out by a qualified electrician, and compatibility with system voltage ratings and applicable electrical codes should be verified before operation.

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: 88130700219

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4.5 ★★★★★
Based on 19 reviews
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Product Reviews
K
Verified Purchase
Kathy
Alexandria, US
★★★★★ 5
Price good
Size: 5T-6T, Unit Count: 80
Perfect for starters
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026
L
Verified Purchase
Larisa Thomason
Lowell, US
★★★★★ 5
Finally, a good night's sleep.
For almost a year, I've had sleep issues. No problem falling asleep, but I'd wake up 3 hours later and be up for the next 2-3 hours. I'd finally fall back asleep just a bit before the alarm and spend the rest of the day in a fog. It didn't matter whether I went to bed at 8:30 pm or 11pm - I was still up by 1:30-2 and awake for hours. It gradually got worse and I got desperate. A friend recommended Melatonin and I resisted at first, having tried it after our daughter was born (almost 15 years ago). The tablets I took then had some odd side effects and I only took them for a few weeks before throwing the bottle away. Now, I think I have have been taking far too high of a dose, because these 3mg tablets work great. Be careful when you take them! I'm awake and alert for about 20 minutes and then zone out totally - even in the middle of a conversation. After a couple of months, I've learned to just lay a tablet on my nightstand and take it when I'm ready to turn out the light. It works great: cured the problem of middle of the night sleeplessness. I still wake up sometimes at night, but have no trouble dropping back off to sleep. And when I wake up in the morning, I'm alert, energetic, and not already counting the hours until I can go back to bed to get a good night's sleep. For me, this supplement would have been a good buy at twice the price - and my family agrees. I'm rested, cheerful, and so happy I gave it a try. So far, no bad side effects. In fact, no side effects at all. I am taking it daily, but considering trying it on a more limited basis because of concerns about long-term effects. Considering, but haven't done it yet because I'm so enjoying a good night's sleep that I'm afraid to tinker with success! Although I saw results the very first night I took this, I waited to write a review just in case it was a placebo effect at work. But it's been 11 weeks and I'm confident that this product is really effective for me.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2012
M
Verified Purchase
Madelene Caselli
Cuba, US
★★★★★ 5
Time release.. ONLY way to go
Used this brand before... when refill needed, came back for more. Time release is the best way to go as it works all night. Not one big hit when you 1st go to sleep... A nice "hit"... to get you to sleep and then a slow release of the rest, to KEEP you asleep... Don't think you'll be disappointed. I use sustained release with any vitamin/supplement I take (assuming the company makes it) .. including this. It's the best way to allow your body to utilize the product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2023
P
Verified Purchase
Paul Belanger
West Palm Beach, US
★★★★★ 5
A subtle sleep enhancer.
Melatonin, in my experience, is a very subtle drug. I took it for about a month and then stopped before I actually saw what it was doing. It allowed me to fall asleep quicker and when I woke up during the night, to fall back asleep quicker as well. No more tossing and turning. I prefer the timed release version since I tend to sleep about 4-5 hours straight and then wake up sporadically after that. I had been buying the timed release from GNC but this brand is much cheaper, more pills, and just as effective. I've also tried popping another one after that initial 4-5 stretch of sleep to further prolong sleepy time, but I don't know how effective that is. It doesn't put you to sleep, so there's no grogginess when you wake up. It just jump starts the natural process.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 21, 2017
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Verified Purchase
Lucien M.
Alexandria, US
★★★★★ 4
Time release is the best way
I like these time released tablets. Time release is surprisingly hard to find unlike the immediate release style tablets. Time release allows for a longer sleep pattern as it enters the blood stream slowly over time allowing it to stay in you system. Immediate release will hit you hard and fast but your body will metabolize within a couple of hrs leaving you without the melatonin in you system. I took off a star for being pricey, but these do work very well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 17, 2025

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