Siemens / ITE CN3B800 – 800A 3 Pole Molded Case Circuit Breaker Hot Picks

Designed for heavy power distribution, the Siemens CN3B800 is a 3-pole, 800A molded case breaker. It integrates a Cordon Fuse Pac to achieve a 100kA interrupting rating at 480VAC. This bolt-on unit mounts into Siemens P4 and P5 panelboards, SB switchboards, and legacy ITE CDP panels. It serves as an exact replacement for aging infrastructure, superseded by the CMD63B800. Equipped with fixed thermal-magnetic trip units, this fused breaker delivers reliable long-time and instantaneous protection.