LB3300 - 300Amp Circuit Breaker
- 300 Amp
- 22k @ 600VAC; 30k @ 480VAC; 42k @ 240VAC
- 3 Pole
Purchase Options: New Surplus
LB3300 - 300Amp Circuit Breaker Description
LB3300 - 300Amp Circuit Breaker
The LB3300 is a 300-amp, 3-pole Type LB circuit breaker with a thermal-magnetic design and an interchangeable trip unit. It's rated at 40°C and includes load-side terminals. On the interrupting side, it's rated 22kA at 600VAC, 30kA at 480VAC, and 42kA at 240VAC. If you're sourcing one for existing equipment, those numbers are worth checking closely. So is the physical size. The LB3300 measures 5.50 "W x 10.13 "L x 3.94 "D, which gives you another clear reference point when comparing it with the breaker already in the equipment.
Key Features and Benefits
- 300A, 3-pole configuration for applications requiring these specific ratings
- Type LB design for matching compatible existing equipment
- Thermal-magnetic circuit breaker
- Interchangeable trip unit
- 40°C rated
- Load-side terminals included
- Defined dimensions make it easier to compare physical fit with an existing breaker
- Suitable for form, fit, and functional replacement when the complete specifications match the application
Technical Specifications
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Part Number: LB3300
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Type: LB
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Amperage: 300A
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Poles: 3
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Breaker Design: Thermal-magnetic
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Trip Unit: Interchangeable
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AIC Rating: 22kA at 600VAC
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AIC Rating: 30kA at 480VAC
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AIC Rating: 42kA at 240VAC
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Temperature Rating: 40°C
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Terminals: Load-side terminals included
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Height: 10.13 in.
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Width: 5.50 in.
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Depth: 3.94 in.
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Overall Dimensions: 5.50"W x 10.13"L x 3.94"D
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Approx. Ship Weight: 16.00 lbs.
Material Compliance and Certifications
Specific UL, CSA, IEC, RoHS, REACH, or other certification and material-compliance information was not supplied for the LB3300. Because of that, do not assume those listings based on the breaker type or ratings.
Where It Works Best
The LB3300 makes the most sense where the existing equipment calls for a 300A, 3-pole Type LB thermal-magnetic breaker with an interchangeable trip unit. This makes it especially relevant for maintenance and replacement work involving compatible legacy electrical equipment.
Before making the match, compare the breaker already in service with the LB3300's ratings. Check the required AIC at the system voltage—22kA at 600VAC, 30kA at 480VAC, or 42kA at 240VAC—and confirm the 40°C rating.
Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. CIRCUIT BREAKER SUPERSTORE® is an independent reseller and is not an authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do not apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.
Eaton®, Cutler-Hammer®, Westinghouse®, Challenger®, Bussmann®, Edison®, Edison Fuse®, GTE Sylvania®, Crouse-Hinds®, and Cooper® are registered trademarks of Eaton Corporation plc. Products sold are surplus, used, or refurbished and are NOT supplied by Eaton Corporation plc or its affiliates.
Specifications
- Width:5.5
- Height:10.13
- Depth:3.94
- Poles:3
- Amperes:300
- A.I.C. Rating & Volts:22k @ 600VAC; 30k @ 480VAC; 42k @ 240VAC
- Type:LB
- Approx Dimensions:5.50"W x 10.13"L x 3.94"D
- Additional Notes:40°C Rated, Thermal Magnetic Circuit Breaker With Interchangeable Trip Unit. This item includes load-side terminals. - discontinued by the Manufacturer
Returns are easy
You may return unused items within 30 days of delivery for a full refund.
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