SIEMENS NGB2C125B Breaker 125A 2P Molded Case Circuit Breaker

The SIEMENS NGB2C125B is a 125 Amp, 2-pole molded case circuit breaker designed for panelboard and switchboard applications. It is suitable for use by electrical distributors and switchgear suppliers seeking reliable protective devices for electrical distribution systems. This breaker supports 480Y voltage systems and is rated for use with copper and aluminum wire, offering robust protection and thermal-magnetic trip functionality.

Specifications

• Manufacturer: Siemens
• Manufacturer Part #: NGB2C125B
• Continuous Current Rating: 125A
• Number of Poles: 2
• Voltage Rating: 480Y
• Interrupting Rating: 25kA
• Wire Size Compatibility: #8-1/0 AWG Copper, #8-2/0 AWG Aluminum (Integral Lugs)
• Product Weight: 3.3510 lbs
• UPC: 040892058994
• Mounting: Panelboard Mount
• Thermal-Magnetic Trip Unit

Features

• Load and line lugs included as standard for easy installation
• HACR rated for use with heating, air conditioning, and refrigeration equipment
• Integral lug design suitable for copper and aluminum conductors at 60/75¬∞C
• Compact 2-pole design with 1-inch width per pole for efficient panel space utilization
• Compatible with Siemens certified panelboards and switchboards only
• Includes insulation requirements for mounting on metal surfaces to ensure dielectric strength
• Complies with UL 489 and CSA standards for safety and performance

Downloads & Links

• Spec Sheet
• Spec Sheet