Westinghouse NB3800PF Tri Pac Circuit Breaker

The Westinghouse NB3800PF TRI-PAC Circuit Breaker delivers reliable three-phase overcurrent and short-circuit protection for industrial power distribution and high-capacity electrical systems. It is designed for installation in switchgear, motor control centers, and distribution panels—and is commonly used in manufacturing facilities, industrial automation, HVAC equipment, and other power-distribution applications where dependable fault interruption is critical. Technical specs: 3-pole, 800 A, 600 VAC, Thermal Magnetic circuit protection with a TRI-PAC electronic trip, Molded Case Frame, Fixed Mount, 50/60 Hz, Three-Phase, Industrial Duty Rated: Yes. The unit uses mechanical lug connections and is intended for high-capacity power distribution and motor protection. Common replacements include Eaton NB3800F, Square D PJF36800CU44A, and Siemens HND36800.