SIEMENS NGB1C020B Molded Case Circuit Breaker 20A 1-Pole 277V

The SIEMENS NGB1C020B is a 1-pole molded case circuit breaker designed for panelboard and switchboard applications. It is suitable for use by electrical distributors and switchgear suppliers requiring reliable overcurrent protection in lighting solutions and wire and cable systems. This breaker supports a continuous current rating of 20 amps at 277 volts and features load and line lugs rated for 60/75°C wire, facilitating secure connections in electrical installations.

Specifications

• Manufacturer: Siemens
• Manufacturer Part #: NGB1C020B
• Number of Poles: 1
• Continuous Current Rating: 20 Amps @ 40¬∞C
• Voltage Rating: 277V AC
• Interrupting Rating: 25 kA RMS symmetrical amperes at 277V AC (UL 489)
• Wire Size Compatibility: #14‚Äì#6 AWG Copper, #12‚Äì#6 AWG Aluminum (60/75¬∞C)
• Product Weight: 1.6760 lbs
• Mounting: Panelboard mount with included line and load lugs

Features

• Thermal-magnetic trip unit for standard overcurrent protection
• Load and line lugs included as standard for copper and aluminum conductors
• HACR rated for use with heating, air conditioning, and refrigeration equipment
• Compact 1-inch width per pole for efficient panel space utilization
• Designed for use exclusively with Siemens certified panelboards and switchboards
• Installation instructions specify required insulation with minimum dielectric strength of 600 V/mil when mounted on metal surfaces
• Torque specifications for wire connections: 35 lb-in for 14‚Äì10 AWG, 40 lb-in for 8 AWG, and 45 lb-in for 6‚Äì4 AWG conductors

Downloads & Links

• Spec Sheet
• Spec Sheet