HMA3300 - 300Amp Circuit Breaker
- 300 Amp
- 25k @ 600VAC; 35k @ 480VAC; 65k @ 240VAC
- 3 Pole
Purchase Options: New Surplus
HMA3300 - 300Amp Circuit Breaker Description
HMA3300 - 300Amp Circuit Breaker
When you’re replacing a breaker in existing equipment, the details matter. The HMA3300 is a 300-amp, 3-pole thermal-magnetic circuit breaker designed for systems that use the HMA breaker configuration. It features an interchangeable trip unit, is rated at 40°C, and includes the load-side terminals. Interrupting ratings are 25k AIC at 600VAC, 35k AIC at 480VAC, and 65k AIC at 240VAC. Measuring 8.25"W x 16.00"L x 4.00" D, the HMA3300 gives maintenance teams, electricians, and facility personnel the specific electrical and physical characteristics they need when checking compatibility with existing equipment.
Key Features and Benefits
- 300 Amp, 3-pole configuration for compatible three-phase electrical systems
- Thermal magnetic operation provides overload and short-circuit protection
- Interchangeable trip unit for equipment designed around this HMA configuration
- Rated for 40°C
- Load-side terminals are included
- Defined dimensions make checking physical fit easier
- A practical choice for maintaining compatible existing and legacy electrical equipment
Technical Specifications
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Part Number: HMA3300
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Type: HMA
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Breaker Type: Thermal Magnetic
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Amperage: 300 Amps
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Poles: 3
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Temperature Rating: 40°C
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Trip Unit: Interchangeable
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A.I.C. @ 600VAC: 25k
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A.I.C. @ 480VAC: 35k
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A.I.C. @ 240VAC: 65k
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Width: 8.25 in.
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Height / Length: 16.00 in.
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Depth: 4.00 in.
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Dimensions: 8.25"W x 16.00"L x 4.00"D
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Approx. Shipping Weight: 46.00 lbs.
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Terminals: Load-side terminals included
Material Compliance and Certifications
Material compliance and certification details were not provided in the available specifications for the HMA3300, so no particular UL, CSA, RoHS, or other certification should be assumed.
If your installation has specific listing or compliance requirements, check the markings on the breaker and the documentation for the equipment in which it will be installed.
Where It Works Best
The HMA3300 circuit breaker makes the most sense for existing electrical distribution equipment designed to accept an HMA 300-Amp, 3-pole thermal-magnetic breaker. This can include legacy electrical systems where maintaining the original breaker configuration and physical fit is important.
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:8.25
- Height:16.0
- Depth:4.0
- Poles:3
- Amperes:300
- A.I.C. Rating & Volts:25k @ 600VAC; 35k @ 480VAC; 65k @ 240VAC
- Type:HMA
- Approx Dimensions:8.25"W x 16.00"L x 4.00"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.
FREE ground shipping on breaker orders over $100 and all other items with orders over $500.
Shipping charges are Prepaid and Allowed on UPS Ground orders for all other products on orders over $500.00, again only when shipping within the lower 48 continental United States, provided the product(s) can safely ship UPS Ground.
If the product cannot safely ship via UPS Ground, or is too heavy to ship UPS Ground, then the product will be shipped via freightliner at buyer's expense.
CIRCUIT BREAKER SUPERSTORE® offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).
Same Day Shipping
We strive to ship out your items within one business day.
In rare circumstances, CIRCUIT BREAKER SUPERSTORE® may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.
CIRCUIT BREAKER SUPERSTORE® provides a limited 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer).