SIEMENS NGB3B100V Breaker 100A 3P 480Y 25K - Electrical Distributor Circuit Protection

The SIEMENS NGB3B100V is a 3-pole circuit breaker designed for use in Siemens panelboard and switchboard applications. It provides reliable overcurrent protection for electrical distribution systems, suitable for industrial and commercial wiring installations. This breaker supports a 100 ampere rating at 480Y volts and features a 25kA interrupting capacity, making it a critical component for maintaining electrical safety and system integrity in wire and cable management.

Specifications

• Manufacturer: Siemens
• Manufacturer Part #: NGB3B100V
• Number of Poles: 3
• Ampere Rating: 100A
• Voltage Rating: 480Y Volts AC
• Interrupting Capacity: 25,000 RMS symmetrical amperes (25kA)
• Product Weight: 3.5 lbs
• UPC: 783643555440

Features

• UL489 and IEC 60947-2 compliant for global electrical standards
• Load side lugs supplied as standard for easy installation
• Compatible with copper and aluminum conductors (AWG sizes 14-2 for 15-30A, 8-2/0 for 35-125A)
• Torque specifications for lug connections ensure secure wiring: 35-55 inch-lbs depending on wire size
• Designed exclusively for Siemens certified panelboards and switchboards
• Includes retainer clips for secure mounting

Downloads & Links

• Spec Sheet
• Spec Sheet
• Spec Sheet