MGL36700 - 700 Amp Circuit Breaker

MGL36700 - 700 Amp Circuit Breaker

When you’re matching a 700 amp circuit breaker for existing electrical distribution equipment, amperage is only the beginning. The MGL36700 is a 700A, 3-pole circuit breaker rated for 600VAC at 50/60Hz, with an ET 1.0 electronic trip unit and an 80% continuous current rating. For compatible equipment requiring this exact electrical, trip, terminal, and physical configuration, the MGL36700 can be considered a form, fit, and functional replacement candidate after verifying all application requirements. Its solid molded-case construction is built to last when selected, installed, and maintained correctly.

Key Features and Benefits

• 700 Amp, 3-Pole Rating: The MGL36700 provides a 700A line-rated current with a three-pole configuration.
• ET 1.0 Electronic Trip Unit: Uses an electronic basic ET 1.0 trip unit with a 300–800A long-time pickup adjustment range.
• Defined Magnetic Tripping Range: Manufacturer specifications list a magnetic tripping current of 1,400–7,000A.
• 600VAC Rating: Rated for operation at 600VAC, 50/60Hz under UL 489.
• Line and Load Lugs Included: Both sides use lug connections, an important detail when checking a replacement breaker for compatibility.
• Specified Conductor Capacity: AL800M23K terminals accept 3 x 3/0 AWG through 3 x 500 kcmil aluminum or copper conductors.
• 80% Continuous Current Rating: Clearly specified for applications where this continuous-current classification is required.
• HACR Rated: The MGL36700 is identified as HACR rated.

Technical Specifications

• Catalog Number: MGL36700
  
• Product Type: Circuit Breaker
  
• Product Family: PowerPact M
  
• Device Application: Distribution
  
• Line Rated Current: 700A
  
• Number of Poles: 3
  
• Rated Operational Voltage: 600VAC, 50/60Hz, UL 489
  
• Network Frequency: 50/60Hz
  
• Breaking Capacity Code: G
  
• UL 489 AIR: 65kA at 240VAC, 50/60Hz
  
• UL 489 AIR: 35kA at 480VAC, 50/60Hz
  
• UL 489 AIR: 18kA at 600VAC, 50/60Hz
  
• IEC 60947-2 Icu: 50kA at 240VAC, 50/60Hz
  
• IEC 60947-2 Icu: 35kA at 380/415VAC, 50/60Hz
  
• IEC 60947-2 Ics: 25kA at 240VAC, 50/60Hz
  
• IEC 60947-2 Ics: 20kA at 380/415VAC, 50/60Hz
  
• Trip Unit Technology: Electronic, Basic, ET 1.0
  
• Trip Unit Name: ET 1.0
  
• Long-Time Pickup Adjustment Range: 300–800A
  
• Magnetic Tripping Current: 1,400–7,000A
  
• Continuous Current Rating: 80%
  
• Rated Insulation Voltage: 750V, IEC 60947-2
  
• Line-Side Electrical Connection: Lugs
  
• Load-Side Electrical Connection: Lugs
  
• Height: 12.86 in. (326.64 mm)
  
• Width: 8.27 in. (210.06 mm)
  
• Depth: 8.05 in. (204.47 mm)
  
• Net Weight: 29 lb. (13.2 kg)
  
• Circuit Breaker Application: HACR-rated
  

Material Compliance and Certifications

The MGL36700 carries several documented certifications and standards that are useful when checking it against an existing installation or project specification.

• Product Certifications: UL, CSA, NOM
• Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
• Quality Label: CE
• HACR Rated: Yes
• IP Degree of Protection: IP40

Where It Works Best

The MGL36700 700A circuit breaker is best suited for compatible electrical distribution equipment requiring a 700A, 3-pole, 600VAC breaker with an ET 1.0 electronic trip unit. It is particularly important to match the 18kA interrupting rating at 600VAC, as well as the applicable 240VAC and 480VAC interrupting ratings, rather than selecting a breaker based on amperage alone.