SIEMENS NGB2B040BNAV Breaker 40A 2P Molded Case Circuit Breaker

The SIEMENS NGB2B040BNAV is a 2-pole molded case circuit breaker designed for panelboard and switchboard applications. It is intended for use with Siemens certified components, making it suitable for electrical distributors and switchgear suppliers requiring reliable protection solutions. This breaker supports 40 amps continuous current rating and is compatible with 480Y voltage systems, providing robust circuit protection in commercial and industrial electrical installations.

Specifications

• Manufacturer: Siemens
• Manufacturer Part #: NGB2B040BNAV
• Number of Poles: 2
• Continuous Current Rating: 40 Amps @ 40¬∞C
• Voltage Rating: 480Y
• Interrupting Rating: 25 kA (UL/CSA RMS Symmetrical Amperes)
• Product Weight: 2.7560 lbs
• Wire Size Compatibility: #14‚Äì#6 AWG Copper, #12‚Äì#6 AWG Aluminum (60/75¬∞C wire)
• Mounting: Panelboard Mount

Features

• Thermal-magnetic trip unit for standard protection
• Load and line lugs included as standard for easy installation
• HACR rated for HVAC applications
• Compatible with Siemens NGB series panelboards and switchboards
• Insulation requirements: Minimum dielectric strength of 600 V/mil when mounted on metal surfaces
• Torque specifications for line terminal screws: 18‚Äì23 lb-in (2‚Äì2.6 N-m)
• Supports copper and aluminum conductors with specified torque and wire size ranges

Downloads & Links

• Spec Sheet
• Spec Sheet