NM632300 - 300Amp Circuit Breaker
- 300 Amp
- 22k @ 600VAC; 30k @ 480VAC; 42k @ 240VAC
- 3 Pole
Purchase Options: Refurbished
NM632300 - 300Amp Circuit Breaker Description
NM632300 - 300Amp Circuit Breaker
The NM632300 is a 300 amp, 3-pole molded case circuit breaker used in commercial and industrial electrical systems. It’s typically installed in three-phase panels where dependable overcurrent protection is required. This breaker uses a thermal-magnetic trip, allowing it to handle normal operating loads while reacting quickly to overloads and short circuits. The breaker mounts using a bolt-on style, which helps keep it firmly seated in the panel. Load-side lug terminals are included, so there’s no need to source them separately. This model is commonly used for maintenance and replacement work where an existing breaker needs to be swapped without changing the panel layout.
Key Features and Benefits
- 300 amp current rating
- 3-pole configuration for three-phase systems
- Thermal-magnetic trip protection
- Molded case construction
- Bolt-on mounting
- Load-side lugs included
Technical Specifications
- Part Number: NM632300
- Poles: 3
- Amperage: 300A
-
Interrupting Capacity:
- 22k @ 600VAC
- 30k @ 480VAC
- 42k @ 240VAC
- Frame Type: NM
- Temperature Rating: 40°C
- Dimensions: 8.19" W × 15.50" L × 4.13" D
- Approximate Weight: 38 lbs
- Mounting Type: Bolt-On
Material Compliance and Certifications
This circuit breaker is built to meet standard electrical industry requirements for performance and safety. Materials are selected to handle heat and electrical stress under rated conditions. When installed correctly, it supports safe operation in approved electrical systems.
Where It Works Best
The NM632300 is best suited for commercial and industrial panels where a 300 amp, three-pole breaker is required. It’s commonly used in maintenance situations, upgrades, or direct replacements in existing electrical equipment.
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.
Specifications
- Width:8.19
- Height:15.5
- Depth:4.13
- Poles:3
- Amperes:300
- A.I.C. Rating & Volts:22k @ 600VAC; 30k @ 480VAC; 42k @ 240VAC
- Type:NM
- Approx Dimensions:8.19"W x 15.50"L x 4.13"D
- Additional Notes:40°C, Bolt-On, Thermal Magnetic, Molded Case Circuit Breaker. Includes Load-Side Lug Terminals
Returns are easy
You may return unused items within 30 days of delivery for a full refund.
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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).