MJL36500 - 500 Amp Circuit Breaker

MJL36500 - 500 Amp Circuit Breaker

The MJL36500 is a 500 amp, 3-pole circuit breaker built around an ET 1.0 basic electronic trip unit, with lugs provided on both the line and load sides. For replacement work, that gives you several concrete details to check before matching: the 500A rating, three-pole configuration, 600VAC rating, trip technology, terminal arrangement, interrupting capacity, and physical size.

Key Features and Benefits

• 500 Amp, 3-Pole Configuration: Provides a clearly defined starting point for matching the breaker to compatible electrical distribution equipment.
• ET 1.0 Electronic Trip Unit: Uses basic electronic trip technology with a stated 300–800A long-time pickup adjustment range.
• Magnetic Tripping Current: Specified at 1,000–5,000A, an important characteristic to confirm against the intended application.
• Line and Load Lugs Included: Unlike configurations where you must determine terminal hardware separately, this breaker includes lugs on both the line and load sides.
• Broad Stated Conductor Range: The supplied lug configuration accepts 3 x 3/0 AWG through 3 x 500 kcmil aluminum/copper conductors.
• 80% Continuous Current Rating: Manufacturer specifications identify an 80% continuous current rating.

Technical Specifications

• Catalog Number: MJL36500
  
• Product Type: Circuit Breaker
  
• Device Application: Distribution
  
• Rated Current: 500A
  
• Number of Poles: 3
  
• Rated Operational Voltage: 600VAC, 50/60Hz, UL 489
  
• Network Frequency: 50/60Hz
  
• Breaking Capacity Code: J
  
• UL 489 AIR: 100kA @ 240VAC; 65kA @ 480VAC; 25kA @ 600VAC
  
• IEC 60947-2 Icu: 65kA @ 240VAC; 50kA @ 380/415VAC
  
• IEC 60947-2 Ics: 35kA @ 240VAC; 25kA @ 380/415VAC
  
• Trip Unit: ET 1.0
  
• Trip Unit Technology: Basic Electronic
  
• Long-Time Pickup Adjustment Range: 300–800A
  
• Magnetic Tripping Current: 1,000–5,000A
  
• Continuous Current Rating: 80%
  
• Rated Impulse Withstand Voltage (Uimp): 8kV, IEC 60947-2
  
• Rated Insulation Voltage (Ui): 750V, IEC 60947-2
  
• Electrical Connection: Lugs, Line and Load
  
• Circuit Breaker Application: HACR Rated
  
• 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)
  

Material Compliance and Certifications

The MJL36500 circuit breaker has documented UL, CSA, and NOM product certifications and carries a CE quality label.

Where It Works Best

The MJL36500 500 amp circuit breaker is a practical candidate for compatible electrical distribution equipment calling for a 500A, 3-pole breaker with a 600VAC rating, ET 1.0 electronic trip unit, and line-and-load lug configuration. Because both sides use lugs, include the terminal configuration in the fit check along with the electrical ratings.