Square D MGA36300 3 Pole 300 Amp 600V Circuit Breaker

The Square D MGA36300 is a 300A, 3-pole, 600V PowerPact M-Frame circuit breaker with high-interrupting thermal-magnetic LI trip. Higher AIC version of the MA36 series — rated 42kA at 600V, 85kA at 480V. I-Line plug-in mounting. AllBreakerSales.com stocks new surplus and reconditioned MGA36300 units with same-day quotes and nationwide shipping.

MGA36300 Specifications

Specification	Value
Amperage	300A
Poles	3
Voltage	600VAC
Interrupt Rating	42kA @ 600V / 85kA @ 480V / 100kA @ 240V
Frame Size	M-Frame (300A Frame, High AIC)
Mounting Type	I-Line Plug-In
Trip Type	Thermal Magnetic
Trip Function	LI — Long-Time, Instantaneous
Wire Size	3/0 AWG–350 kcmil (Al/Cu)
Phase	3-Phase
Standards	UL 489, CSA C22.2 No.5, NEMA AB 1
Temperature Rating	-25°C to 70°C

Key Features

• 300A continuous current rating
• 3-pole, 600V AC operation
• Thermal-magnetic LI trip (long-time, instantaneous)
• I-Line plug-in mounting
• 42kA interrupting capacity @ 600V; 85kA @ 480V; 100kA @ 240V
• Higher AIC than standard MA series

Applications

• High fault-current industrial facilities
• Commercial power distribution
• Feeder circuit protection near utility transformers

Buy MGA36300 Circuit Breaker

Square D PowerPact M-Frame 300A 3-pole circuit breaker. In stock at AllBreakerSales.com. Call (877) 611-0034 for same-day pricing. Genuine OEM parts, ships from US warehouse.

Brand: Square D | Series: PowerPact M-Frame | Catalog Number: MGA36300

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