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** Picture is for identification purposes only and may not represent the actual amperage of the product listed **

MA3300 - 300 Amp Circuit Breaker

  • 300 Amp
  • 22k @ 600VAC; 30k @ 480VAC; 42k @ 240VAC
  • 3 Pole
Circuit BreakersSKU: MA3300 [NS]

Purchase Options: New Surplus

MA3300 - 300 Amp Circuit Breaker Description

MA3300 - 300 Amp Circuit Breaker

The MA3300 is a 300-amp, three-pole MA thermal magnetic circuit breaker designed for use with compatible electrical equipment when you need to match the original breaker's electrical ratings, trip-unit configuration, terminals, and physical size. It has a 40°C rating, an interchangeable trip unit, and load-side terminals.

Key Features and Benefits

  • The 300A rating applies to electrical equipment that requires this particular current rating.
  • The three-pole design clearly specifies the breaker for matching with compatible equipment.
  • It is identified as an MA-type circuit breaker to enable a quick check of the component and its application.
  • The thermal-magnetic circuit breaker features the specified thermal-magnetic configuration.
  • The MA3300 includes a swappable trip unit, which is important for replacement.
  • It has a 40°C rating, meeting the specified 40 °C temperature rating.

Technical Specifications

  • Part Number: MA3300
  • Type: MA
  • Product Type: Thermal Magnetic Circuit Breaker
  • Amperes: 300A
  • Poles: 3
  • Temperature Rating: 40°C
  • Trip Unit: Interchangeable
  • A.I.C. Rating & Volts: 22k @ 600VAC; 30k @ 480VAC; 42k @ 240VAC
  • Terminals: Load-side terminals included
  • Height: 16.0 in.
  • Width: 8.25 in.
  • Depth: 4.0 in.
  • Dimensions: 8.25"W x 16.00"L x 4.00"D
  • Approximate Shipping Weight: 50.00 lbs.

Material Compliance and Certifications

The available MA3300 specifications do not include specific information on material compliance, agency certifications, or electrical listings; therefore, you cannot assume the product has UL, IEC, RoHS, REACH, or other certifications.

Where It Works Best

The MA3300 300A three-pole circuit breaker is a suitable replacement for existing or older electrical equipment designed for an MA-type, 40°C-rated thermal magnetic circuit breaker with an interchangeable trip unit. When matching it with an existing breaker, verify the load-side terminals provided with this breaker.


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:22k @ 600VAC; 30k @ 480VAC; 42k @ 240VAC
  • Type:MA
  • 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).

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