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Square D MGF36300 300A 3-Pole 600 V Circuit Breaker

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Manufacturer :
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Replacement available
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Picture available on request
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CSA / UL Approved
Regular price $22,696.00
Sale price $22,696.00 Regular price
Unit price
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Seamless online shopping experience guaranteed with easy shipping and returns policy.

Shop with Confidence: Our Products come with a Reliable Year-Long Warranty.

Icon
Secure transaction
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FREE & fast shipping on orders over $49
Icon
CSA approved with 1 year warranty
Icon
30 day returns
Square D MGF36300 300A 3-Pole 600 V Circuit Breaker

Square D MGF36300 300A 3-Pole 600 V Circuit Breaker

Regular price $22,696.00
Sale price $22,696.00 Regular price
Unit price
Product description
Shipping

Meet the Square D MGF36300 3-Pole 600 V Circuit Breaker — a purpose-built protection device for demanding three-phase power systems. With a 300 A current rating, this breaker is designed to safely interrupt fault currents and isolate faulty circuits in commercial and industrial panels, helping minimize downtime and equipment damage.

  • Part Number: MGF36300
  • Current rating: 300 A
  • Poles: 3
  • Voltage rating: 600 V
  • Brand: Square D

Why this 3-pole 600 V design matters: a true three-phase protection solution ensures all phases are isolated together, which is essential for safe operation of three-phase motors and equipment. The 600 V rating aligns with typical industrial distribution environments, giving you a reliable, compatible choice when upgrading or replacing older breakers in Square D panels.

Ideal uses

  • Main protection in three-phase panelboards for commercial or light-industrial applications
  • Feeder protection for motor circuits and other three-phase loads
  • Replacement part within Square D systems that require an MGF-series breaker

Compatibility and installation tips: ensure you’re installing in a compatible Square D panel or enclosure that accepts MGF-series circuit breakers. When selecting a replacement, match the current rating and pole arrangement (300 A, 3-Pole) to preserve system protection and compliance.

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What Our Customers Say

4.9 (38 reviews)

General feedback we often hear from customers purchasing industrial electrical parts.

Verified

Feels well-built and suitable for everyday plant and maintenance use.

Facilities · Manufacturing

Verified

Lead time was reasonable and the part matched expectations when it arrived.

Procurement · Ontario

Verified

Good value for industrial use. Customers mention easy installation.

Service tech · Field work

Fast industrial sourcing support

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