Square D

Square D MHL36450 450A 3 Poles Thermal Magnetic Molded Case Circuit Breaker – Bolt On – 600V

In stock
SKU: MHL36450-NS
$7,299.00
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1 year warranty
30 day returns

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The Square D MHL36450 molded case circuit breaker is designed for reliable protection of commercial and industrial electrical distribution systems requiring stable and efficient circuit control. Built with an MHL frame style and thermal magnetic non-interchangeable trip unit, this breaker provides dependable overload and short-circuit protection under demanding operating conditions. Its rugged molded case construction, high interrupting capacity, and bolt-on mounting configuration ensure secure installation, operational safety, and long-term performance in critical power systems.

Product Specifications

  • Brand: Square D
  • Model: MHL36450
  • Frame Style: MHL
  • Product Type: Molded Case Circuit Breaker
  • Breaker Type: Thermal Magnetic
  • Trip Unit: Non-Interchangeable
  • Amperage Rating: 450 Ampere
  • Number of Poles: 3 Pole
  • Mounting Type: Bolt On
  • Maximum Voltage Rating: 600V
  • Standard Lug Type: Line and Load End
  • Operating Temperature Reference: 40°C
  • Warranty: One Year

Technical Specifications

  • Thermal magnetic trip mechanism for overload and short-circuit protection
  • Non-interchangeable trip unit for fixed protection settings
  • Heavy-duty molded case construction for industrial-grade durability
  • High interrupting capacity for enhanced electrical safety performance
  • Bolt-on mounting configuration for secure and stable installation
  • Designed for commercial and industrial power distribution systems
  • Reliable interruption performance under varying electrical loads
  • Long service life with robust internal components

Voltage and Ratings

  • Rated Current: 450A
  • Rated Maximum Voltage: 600V
  • Interrupting Capacity: 65kA @ 240 VAC
  • Interrupting Capacity: 65kA @ 480 VAC
  • Interrupting Capacity: 25kA @ 600 VAC
  • Interrupting Capacity: 14kA @ 250 VDC
  • Trip Setting Range: 2250–4500
  • Frequency Rating: 50/60Hz

Product Data

  • Manufacturer: Square D
  • Product Category: Molded Case Circuit Breaker
  • Series: MHL Frame
  • Connection Type: Bolt On
  • Frame Type: M
  • Pole Configuration: 3 Pole
  • Lug Configuration: Line and Load End Terminals Standard
  • Condition Support: Certified Reconditioned and New Surplus
  • Included Warranty Coverage: Shipping, repairs, parts, and labor for recertification
  • Application: Commercial and Industrial Electrical Distribution Systems

Important Note

The product image shown represents a base model and is intended for identification purposes only. Accessories purchased together with the breaker can be professionally installed according to customer configuration requirements at no additional cost when installation details are provided during checkout. Installation, operation, and maintenance must be performed by qualified electrical personnel in accordance with applicable electrical codes and manufacturer guidelines. Warranty coverage excludes damage caused by misuse, improper installation, or normal wear and tear.
  • Type Circuit Breakers
  • Vendor Square D
  • Brand Square D

Returns are easy

You may return items within 30 days of delivery for a refund.

FREE Shipping on orders over $149.

My Circuit Breakers 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).

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In rare circumstances, My Circuit Breakers may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.

My Circuit Breakers provides a comprehensive 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer). Extended warranties are available upon request.