LL3B450 - 450Amp Circuit Breaker
- 450 Amp
- 22k @ 600VAC; 30k @ 480VAC; 42k @ 240VAC
- 3 Pole
Purchase Options:
LL3B450 - 450Amp Circuit Breaker Description
LL3B450 - 450Amp Circuit Breaker
Working with an LL3B450? Start with the whole breaker specification, not just the 450A rating. This is a 3-pole, 450A molded case circuit breaker in the LL3 type, identified as Type ET on a 600 Ampere LL frame. It's rated at 40°C, and it has three A.I.C. ratings to keep straight: 42 kA at 240VAC, 30 kA at 480VAC, and 22 kA at 600VAC. Those numbers matter when you're trying to match a breaker already installed in older electrical equipment. A 450A label gets you part of the way there. The rest of the specification tells you whether you're actually looking at the right breaker.
Key Features and Benefits
- 450A current rating
- 3-pole molded case circuit breaker
- LL3 type
- Type ET identification
- 600 Ampere LL frame
- 40°C rating
- Multiple A.I.C. ratings make it easier to check the breaker against the actual system voltage
Technical Specifications
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Part Number: LL3B450
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Product Type: Molded Case Circuit Breaker
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Type: LL3
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Amperage: 450A
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Poles: 3
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Frame: 600 Ampere LL Frame
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Identification: Type ET
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Temperature Rating: 40°C
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A.I.C. Rating at 240VAC: 42 kA
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A.I.C. Rating at 480VAC: 30 kA
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A.I.C. Rating at 600VAC: 22 kA
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Width: 9 in.
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Height: 11 in.
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Depth: 4 in.
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Overall Dimensions: 9.00"W x 11.00"H x 4.00"D
Material Compliance and Certifications
No specific UL, CSA, IEC, RoHS, REACH, or other certification or material-compliance information was provided for the exact LL3B450.
Where It Works Best
The LL3B450 makes the most sense in a fairly straightforward situation: you're maintaining existing or legacy electrical equipment, and the breaker you're replacing points back to this particular LL3 configuration.
That's a better way to approach an LL3B450 replacement circuit breaker than searching by amperage alone. When the electrical ratings and physical configuration agree with the equipment already in service, you have the information needed to evaluate the breaker for the required form, fit, and function.
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.
Siemens®, I-T-E®, and Murray® are registered trademarks of Siemens AG. Products sold are surplus, used, or refurbished and are NOT supplied by Siemens AG or its affiliates.
Specifications
- Width:9.0
- Height:11.0
- Depth:4.0
- Poles:3
- Amperes:450
- A.I.C. Rating & Volts:22k @ 600VAC; 30k @ 480VAC; 42k @ 240VAC
- Type:LL3
- Approx Dimensions:9.00"W x 11.00"L x 4.00"D
- Additional Notes:40°C, Type ET 600 Ampere "LL" Frame, Molded Case Circuit Breaker - 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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