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Siemens L3B125 - Molded Case 125A 600V 3-Pole Thermal Magnetic

Siemens
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Siemens L3B125 Circuit Breaker - Molded Case 125A 600V 3-Pole Thermal Magnetic The Siemens L3B125 is a 3-pole molded case circuit breaker designed for overcurrent protection in industrial and commercial power distribution systems. This unit is rated for 125 amps at 600 volts AC and utilizes a thermal-magnetic trip mechanism with LI (Long-Time and Instantaneous) functions to safeguard against sustained overloads and short circuits. Weighing 40 lb, the breaker features a compact 125A frame construction suitable for panel or DIN rail mounting and operates at 50/60 Hz. It complies with industry safety certifications and delivers a high interrupt rating of 25 kAIC for reliable fault current interruption. Typical applications include motor control centers, switchboards, and branch circuit protection in three-phase 3-phase systems.

Key Features & Specifications
  • Manufacturer: Siemens
  • Item Subcategory: Molded Case
  • Weight: 40 lb
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 600V
  • Poles: 3
  • Protection: Thermal Magnetic
  • Phase: 3
  • Current Rating: 125A
  • Amperage: 125 Amps
  • Voltage Rating: 600 Volts AC
  • Number of Poles: 3
  • Interrupt Rating: 25 kAIC
  • Trip Unit: Thermal-Magnetic
  • Mounting Type: Panel or DIN Rail
  • Frame Type: 125A Frame
  • Frequency: 50/60 Hz
  • Certifications: Industry standard safety certifications