MDL3350L - 350 Amp Circuit Breaker

MDL3350L - 350 Amp Circuit Breaker

The MDL3350L is a 350 amp, 3-pole MDL thermal-magnetic circuit breaker for your compatible electrical equipment, provided its ratings, dimensions, and terminal configuration match the existing installation. A key detail of this model is that it includes both line and load terminals. Hence, terminal configuration is an important point to check when identifying a form, fit, and functional replacement. For maintenance and replacement work involving legacy equipment, matching these details—including catalog number, amperage, poles, AIC, voltage, trip configuration, terminals, and dimensions—is the practical way to determine suitability.

Key Features and Benefits

• 350A, 3-Pole Configuration: The MDL3350L is rated at 350 amps with three poles, giving buyers clear electrical characteristics to compare with an existing breaker.
• Thermal-Magnetic Operation: Uses the thermal-magnetic trip configuration specified for this MDL circuit breaker.
• Interchangeable Trip Unit: An interchangeable trip unit is part of the specified breaker configuration and should be matched carefully during replacement selection.
• Line and Load Terminals Included: Unlike configurations that include only load terminals, the supplied information for the MDL3350L specifically identifies both line and load terminals as included.
• 40°C Rated: The breaker is rated for 40 °C.
• HACR Rated: The available product specifications explicitly identify the HACR rating.

Technical Specifications

• Part Number: MDL3350L
  
• Product Type: Thermal-Magnetic Circuit Breaker
  
• Type: MDL
  
• Amperes: 350A
  
• Poles: 3
  
• A.I.C. Rating at 600VAC: 25kAIC
  
• A.I.C. Rating at 480VAC: 50kAIC
  
• A.I.C. Rating at 240VAC: 65kAIC
  
• Trip Type: Thermal-Magnetic
  
• Trip Unit: Interchangeable
  
• Temperature Rating: 40°C
  
• HACR Rated: Yes
  
• Included Terminals: Line and load terminals
  
• Height: 16.00 in.
  
• Width: 8.25 in.
  
• Depth: 4.06 in.
  
• Dimensions: 8.25"W x 16.00"H x 4.06"D
  
• Approx. Ship Weight: 35.00 lbs.
  

Material Compliance and Certifications

The supplied specifications identify the MDL3350L as HACR-rated. No other certification or material-compliance information—such as UL, IEC, RoHS, or REACH status—was provided for this exact catalog number. Verify those details for the MDL3350L rather than inferring them from other MDL breakers or related products.

Where It Works Best

The MDL3350L 350 amp circuit breaker is a practical form, fit, and functional replacement candidate for compatible existing or legacy electrical equipment that specifically requires its electrical and physical configuration. Start by matching the 350A rating, three poles, MDL type, thermal-magnetic operation, interchangeable trip unit, and 40°C rating. The system voltage and interrupting rating must also match the breaker's specified 25kAIC at 600VAC, 50kAIC at 480VAC, or 65kAIC at 240VAC.