
MAL366001386 - 600 Amp Circuit Breaker

- 600 Amp
 - 22k @ 600VAC; 30k @ 480VAC; 42k @ 240VAC
 - 3 Pole
 
Purchase Options:
MAL366001386 - 600 Amp Circuit Breaker Description
MAL366001386 - 600 Amp Circuit Breaker
Looking for serious protection for your power system? The MAL366001386 600 Amp circuit breaker is built to handle high-demand electrical setups without flinching. Designed for industrial and commercial environments, it delivers dependable performance with a high interrupting capacity—up to 42kA at 240V—to keep your equipment safe from overloads and short circuits. Whether you're managing a factory floor, a big-box retail space, or a commercial electrical panel, this breaker does the job reliably and efficiently. It’s fitted with a thermal-magnetic trip unit that knows when to act—kicking in when needed to stop faults in their tracks, but staying calm during normal operation. Built with a tough molded case and rated for 60Hz and 40°C, it stands up to real-world conditions without a hitch.
Key Features and Benefits
- Smart protection: Thermal-magnetic trip keeps your system safe without unnecessary shutdowns.
 - High fault capacity: Handles up to 42kA at 240V, giving you peace of mind in high-load settings.
 - Built to last: Molded case resists heat, impact, and tough environments.
 - Plug-and-go: Includes line and load lugs for quick, clean installation.
 - Versatile performance: Runs smooth in a variety of commercial and industrial settings.
 
Technical Specifications
- Amperage: 600 Amps
 - Number of Poles: 3
 - 
Interrupt Ratings:
- 42kA @ 240V
 - 30kA @ 480V
 - 22kA @ 600V
 
 - Frequency: 60 Hz
 - Frame: MAL
 - Temp Rating: 40°C
 - 
Size:
- Width: 9.00 inches
 - Length: 14.00 inches
 - Depth: 4.53 inches
 
 
Material Compliance and Certifications
- Made to meet strict safety and performance standards, this breaker’s molded housing is built from high-quality insulating materials that hold up against heat and stress.
 - The internal components are precision-calibrated for accurate trip response, so you get consistent protection when it counts most.
 
Where It Works Best
- Manufacturing facilities — protect motors, drives, and heavy-duty machines.
 - Commercial electrical systems — ideal for breaker panels in offices, shopping centers, and public buildings.
 - High-risk environments — performs well where fault current levels are high and reliability is non-negotiable.
 - Infrastructure and utilities — perfect for large-scale systems that need durable, high-capacity circuit protection.
 
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. All trademarks and registered trademarks are the property of their respective owners.
Specifications
- Width:9.0
 - Height:14.0
 - Depth:4.53
 - Poles:3
 - Amperes:600
 - A.I.C. Rating & Volts:22k @ 600VAC; 30k @ 480VAC; 42k @ 240VAC
 - Type:MAL
 - Approx Dimensions:9.00"W x 14.00"L x 4.53"D
 - Additional Notes:60Hz, 40å¡C, Thermal Magnetic, Molded Case Circuit Breaker, Includes Line and Load Lugs
 
Returns are easy
You may return unused items within 30 days of delivery for a full refund.
FREE shipping on breaker orders over $100 and all other items with orders over $500.
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).