MGL36500 - 500 Amp Circuit Breaker

MGL36500 - 500 Amp Circuit Breaker

When you're matching a MGL36500 circuit breaker for existing electrical equipment, amperage is only the beginning. The connection style, trip unit, interrupting ratings, conductor range, and physical dimensions must all match the application. The MGL36500 is a 500-amp, 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 legacy replacement work, that combination of electrical and physical specifications gives buyers concrete details to compare with the existing installation. When all required specifications match, the MGL36500 can serve as a form, fit, and functional replacement candidate in compatible electrical distribution equipment.

Key Features and Benefits

• 500 Amp, 3-Pole Rating: The MGL36500 carries a 500A line-rated current with a three-pole configuration.
• ET 1.0 Electronic Trip Unit: Electronic trip technology provides a 300–800A long-time pickup adjustment range for applications requiring this trip-unit configuration.
• 600VAC Rating: Rated for operation at 600VAC, 50/60Hz under UL 489.
• Line and Load Lugs Included: Electrical connections use lugs on both sides, an important detail when checking a replacement for compatibility.
• Wide Specified Conductor Range: AL800M23K terminals accommodate 3 x 3/0 AWG through 3 x 500 kcmil aluminum or copper conductors.
• 80% Continuous Current Rating: The manufacturer rates this breaker at 80% continuous current.
• Manual Trip Capability: An integral push-to-trip button allows manual tripping of the circuit breaker.
• HACR Rated: The supplied product specifications identify the MGL36500 for HACR applications.

Technical Specifications

• Catalog Number: MGL36500
  
• Product Type: Circuit Breaker
  
• Product Family: PowerPact M
  
• Device Application: Distribution
  
• Line Rated Current: 500A
  
• Number of Poles: 3
  
• Rated Operational Voltage: 600VAC, 50/60Hz
  
• 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: 1,000–5,000A
  
• 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 MGL36500 has specifically documented certifications and standards that can be checked against the requirements of the intended installation.

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

Where It Works Best

The MGL36500 500A circuit breaker is best considered for compatible existing or legacy electrical distribution equipment that specifically calls for a 500-amp, 3-pole, unit-mount breaker with an ET 1.0 electronic trip unit and line- and load-side lug connections. Before installation, check its 600VAC rating, 50/60Hz frequency, interrupting ratings, 80% continuous current rating, and terminal arrangement.