SIEMENS NGB2C040B BRKR NGB 40A 2P 480Y 25K LD LUG 50C

SIEMENS NGB2C040B Molded Case Circuit Breaker 40A 2-Pole The SIEMENS NGB2C040B is a 40 Amp, 2-pole molded case circuit breaker designed for panelboard mounting in electrical distribution systems. It is intended for use in Siemens panelboard and switchboard designs, providing reliable overcurrent protection in commercial and industrial electrical installations. This breaker is suitable for use by electrical distributors and switchgear suppliers requiring robust and certified circuit protection components. Specifications Manufacturer: Siemens Manufacturer Part Number: NGB2C040B Number of Poles: 2 Continuous Current Rating: 40A @ 40°C Interrupting Rating: 25 kA at 480Y/277V AC (UL 489) Voltage Rating: 480Y/277V AC Mounting Type: Panelboard Mount Product Weight: 3.351 lbs Wire Size Compatibility: #14–#6 AWG Copper, #12–#6 AWG Aluminum (60/75°C wire) Terminal Torque: Line terminal screw 18–23 lb.in [2–2.6 N·m] Dimensions: Width 2 in. (for 2 poles), Depth approx. 2.69 in. (from reference of similar breakers) UL and CSA Certified Features Thermal-magnetic trip unit providing standard 40°C ambient protection Load and line lugs included for copper and aluminum conductors HACR rated for heating, air conditioning, and refrigeration equipment Integral with breaker wire connectors for ease of installation Designed for use exclusively with Siemens certified components and panelboards Includes insulating material requirements for mounting on metal surfaces to ensure dielectric strength Compliant with UL 489 and IEC 947-2 standards for molded case circuit breakers Downloads & Links Spec Sheet Spec Sheet