SIEMENS NGB3B040BNAV Molded Case Circuit Breaker

The SIEMENS NGB3B040BNAV is a 3-pole molded case circuit breaker designed for panelboard mount applications. It provides reliable overcurrent protection in electrical distribution systems and is suitable for use by electrical distributors, lighting solutions providers, wire and cable specialists, and switchgear suppliers. This breaker supports a continuous current rating of 40 amps and operates at 480Y volts with a 25kA interrupting rating, meeting industry standards for safety and performance.

Specifications

• Manufacturer: Siemens
• Manufacturer Part #: NGB3B040BNAV
• Number of Poles: 3
• Continuous Current Rating: 40 Amps @ 40¬∞C
• Voltage Rating: 480Y Volts
• Interrupting Rating: 25,000 RMS Symmetrical Amperes
• Product Weight: 5.027 lbs
• UPC: 040892165135

Features

• Panelboard mount design compatible with Siemens certified components
• Load and line lugs included as standard for copper/aluminum wire connections
• HACR rated for heating, air conditioning, and refrigeration equipment
• Thermal-magnetic trip unit providing reliable overcurrent protection
• Compact dimensions with 3-pole width of approximately 3 inches and depth of 3 inches
• Suitable for wire sizes ranging from #14 AWG to 2/0 AWG copper and aluminum conductors
• Includes nut keeper kit option (TNKG3) for secure terminal connections
• Installation instructions emphasize safety with lockout/tagout requirements and insulation standards

Downloads & Links

• Spec Sheet
• Spec Sheet