Square D MGA266002 PowerPact M-Frame MCCB – 2 Pole – 600A – I-Line Mount – Electronic Trip Unit (ET 1.0 LI) – Molded Case Circuit Breaker

The Square D MGA266002 is a PowerPact M-Frame molded case circuit breaker (MCCB) designed for high-capacity industrial power distribution and protection. It provides reliable long-time and instantaneous (LI) protection using an ET 1.0 electronic trip unit. Engineered for use in I-Line panelboards and switchboards, it delivers strong fault protection and dependable performance in demanding electrical systems.

Electrical Ratings

• Frame / Rated Current: 600 A
• Voltage Rating:
  • 240 V AC
  • 480 V AC
  • 600 V AC
• Phase: 1 Phase
• Poles: 2 Pole
• Interrupting Capacity (AIC):
  • 65 kA @ 240 V AC
  • 35 kA @ 480 V AC
  • 18 kA @ 600 V AC
• Utilization: Industrial power distribution and feeder protection

Protection and Trip Functions

• Trip Technology: Electronic
• Trip Unit Model: ET 1.0
• Protection Functions (LI):
  • Long-Time Protection (Overload)
  • Instantaneous Protection
• Trip Adjustability: Fixed thermal / adjustable magnetic
• Push-to-Trip: Yes
• Protection Type: Solid-state electronic

Configuration and Function

• Device Type: Molded Case Circuit Breaker (MCCB)
• Series: PowerPact MGA (M-Frame)
• Mounting Type: I-Line Panelboard Mount
• Electrical Connection: Lug terminals (line/load)
• Application Type: Panelboards, switchboards, industrial distribution systems
• Replacement: Upgraded replacement for legacy MA26600 breakers

Mechanical and Physical Characteristics

• Wire Range: 3 × 3/0 AWG to 500 kcmil (Al/Cu)
• High-capacity industrial frame construction
• Designed for I-Line integration
• Operating Temperature Range: -25 °C to 70 °C
• Modular accessory compatibility (shunt trip, aux switch, UV release, alarm switch)

Standards and Certifications

• UL 489
• IEC 60947-2
• NEMA AB1
• CSA C22.2 No. 5
• CE / CSA / IEC / UL / NOM approved
• Manufacturer: Schneider Electric / Square D
• Series: PowerPact MGA

Features

• High-capacity 600A MCCB for industrial systems
• Advanced ET 1.0 electronic trip unit (LI protection)
• High interrupting capacity up to 65 kA @ 240V
• I-Line panelboard mounting for fast installation
• Reliable overload and short-circuit protection

Returns are easy

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

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