SIEMENS NGB1B125 Breaker 1-Pole 125A 347V Molded Case Circuit Breaker

The SIEMENS NGB1B125 is a 1-pole molded case circuit breaker designed for use in Siemens panelboards and switchboards. It provides reliable overcurrent protection for electrical distribution systems up to 347 volts AC with a 125 ampere continuous current rating. This breaker is suitable for electrical distributors and switchgear suppliers requiring compact, panelboard-mountable solutions for lighting and power circuits. It is HACR rated and includes load lugs integral with the breaker for copper and aluminum wire connections.

Specifications

• Manufacturer: Siemens
• Manufacturer Part #: NGB1B125
• Number of Poles: 1
• Continuous Current Rating: 125 A @ 40°C
• Voltage Rating: 347 V AC
• Interrupting Rating: 14 kA RMS symmetrical at 347 V AC
• Product Weight: 1.6760 lbs
• Wire Size for 35-125 A: #8-1/0 AWG Copper, #8-2/0 AWG Aluminum (Integral with breaker)
• Wire Size for 15-30 A: #14-#6 AWG Copper, #12-#6 AWG Aluminum (Integral with breaker)

Features

• Panelboard mount design compatible with Siemens certified components
• HACR rated for HVAC equipment protection
• Load lugs included as standard for direct wire connection
• Compact 1-inch width per pole for space-efficient installation
• Designed for use in Siemens panelboards and switchboards only
• Integral wire connection terminals for copper and aluminum conductors

Downloads & Links

• Spec Sheet
• Spec Sheet
• Spec Sheet