MBK150 - 150Amp Circuit Breaker

MBK150 - 150Amp Circuit Breaker

When you're replacing a main breaker, the catalog number is only part of the story. The electrical ratings and configuration have to match, too. The MBK150 is identified as a 150-amp, 4-pole main circuit breaker rated for 120/240V, with a 22kA interrupting rating and an EQ9683 main designation. Those are the numbers worth checking against the breaker you're replacing and the requirements of the existing equipment. For a legacy installation that specifically calls for the MBK150 configuration, this breaker can be a form, fit, and functional replacement candidate once you confirm all application requirements. Its solid construction is built to last when selected, installed, and maintained correctly.

Key Features and Benefits

• 150 Amp Rating: Matches applications requiring a 150A main breaker.
• Four Poles: The MBK150 is a 4-pole breaker, so pole configuration is an important part of the replacement check.
• 120/240V: A clearly stated voltage rating makes it easier to compare the breaker with the existing electrical equipment.
• EQ9683 Main: This designation gives you another useful identifier when checking an existing breaker.
• Made for Replacement Matching: Instead of guessing from appearance alone, you can compare the catalog number, amperage, poles, voltage, interrupting rating, and EQ9683 designation.

Technical Specifications

• Catalog Number / MFN: MBK150
  
• Article Number: US2\:MBK150
  
• Product Description: BREAKER 150A 4P 120/240V 22K EQ9683 MAIN
  
• Product Family: Meter Load Center Combo Mains
  
• Amperage: 150A
  
• Poles: 4
  
• Voltage Rating: 120/240V
  
• Interrupting Rating: 22kA
  
• Main Designation: EQ9683 Main
  
• Net Weight: 0.375 lb
  
• UPC: 783643158979
  
• Commodity Code: 8536200020
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The supplied manufacturer information needs some attention. The primary MBK150 product description states 150A, 4P, 120/240V, 22K, EQ9683 Main. Elsewhere in the supplied overview, however, the information changes to 50A and 1P while also referencing Type EQ, UL 489, 120/240V, thermal magnetic, and 22 AIC.

• The environmental information supplied for the product states:
• RoHS Substance Restriction Compliance: Not available
• REACH Article 33 Information: Manufacturer information referenced
• SCIP Number: Not available
• WEEE Take-Back Obligations: No

Where It Works Best

The MBK150 makes the most sense when you're working with existing or legacy electrical equipment that calls for the same 150A, 4-pole, 120/240V, 22kA, EQ9683 main breaker configuration. That's where matching the details pays off.

Check the existing equipment against the MBK150 catalog number, amperage, pole count, voltage, interrupting rating, and main designation.