MBK100A - 100 Amp Circuit Breaker

MBK100A - 100 Amp Circuit Breaker

Engineered for uncompromising protection and performance, the Siemens MBK100A Main Breaker is a premium-grade solution for residential low voltage applications. Part of Siemens’ trusted Family G line, this 100-125 Amp rated main breaker is designed to provide safe and reliable load center conversion in single-phase electrical systems. With an interrupt rating of 22 KA AIR, this unit ensures superior fault interruption capability, offering peace of mind for homeowners and professionals who demand top-tier circuit protection. Whether you're upgrading an existing panel or retrofitting a system, the MBK100A delivers long-lasting performance and compatibility with Siemens' industry-leading load centers. 

Key Features and Benefits

• High Interrupt Capacity: Rated at 22,000 Amps Interrupting Rating (AIR), ensuring optimal protection against overcurrents and short circuits.
• Versatile Application: Compatible with Siemens load centers as a 1-phase main breaker, ideal for residential installations and conversions.
• Space-Saving Design: Compact dimensions (5.512 x 4.331 x 3.543 inches) fit seamlessly into standard enclosures, reducing installation time and space constraints.
• Trusted Siemens Quality: Manufactured by Siemens, a global leader in electrical engineering, guaranteeing high reliability and durability.
• UL Listed Safety: Meets rigorous industry standards for residential electrical safety.

Technical Specifications

• Voltage Rating: Low Voltage Residential (1-Phase)
  
• Ampere Rating: 100 - 125 Amps
  
• Interrupting Rating: 22 KA AIR
  
• Weight: 0.705 lb
  
• Dimensions (L x W x H): 5.512 x 4.331 x 3.543 inches

Material Compliance and Certifications

• RoHS Status: Compliance not currently available – please refer to updated documentation as released.
• Export Control Classification: EAR99 – free of export restrictions under US regulations.
• Returnable: Yes, in accordance with Siemens' standard return policy.
• Environmental Take-Back Obligations (WEEE): Not applicable under 2012/19/EU.

Suitability

• The Siemens MBK100A is ideally suited for residential electrical systems requiring a dependable main breaker for new installations or load center upgrades. Its compatibility with Siemens’ family of load center products, along with its high interrupt rating, makes it a go-to choice for electricians, contractors, and homeowners seeking quality, compliance, and safety in electrical distribution systems. This product is especially suitable for homes and small buildings, delivering robust circuit protection where reliability is non-negotiable.
  

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