NGB3B050, Panelboard Circuit Breaker

NGB3B050 Panelboard Circuit Breaker by Siemens The Siemens NGB3B050 is a 3-pole panelboard circuit breaker designed for reliable electrical distribution and protection in panelboard and switchboard applications. This bolt-on breaker is suitable for use by electrical distributors and lighting solutions providers requiring robust wire and cable protection. It is intended for installation in Siemens certified panelboards, ensuring compatibility with Siemens components and switchgear systems. Specifications Manufacturer: Siemens Manufacturer Part Number: NGB3B050 Number of Poles: 3 Installation Type: Bolt-On Continuous Current Rating: 50 Amps @ 40°C Product Weight: 6.45 lbs UPC: 783643553460 Features Panelboard mount type NGB frame Load lugs included as standard for 60/75°C copper and aluminum wire HACR rated for heating, air conditioning, and refrigeration equipment Designed for use exclusively in Siemens panelboard and switchboard designs Requires insulating material with minimum dielectric strength of 600 V/mil when mounted on metal surfaces Wire connection torque specifications: 8 AWG – 40 lb. in. (4.5 N-m) for 15–30 Amp, 6–4 AWG – 45 lb. in. (5.1 N-m) for 35–125 Amp Complies with UL489 standards for interrupting ratings Downloads & Links Spec Sheet Spec Sheet