ITE CE3B070 Circuit Breaker

The ITE CE3B070 is a legacy CE frame breaker. The documented replacement path progresses through the CLE frame to the current Siemens CED63B070. The CED63B070 is mechanically and electrically interchangeable, but you must verify that the replacement meets your specific fault current requirements before installation.

The CE3B070 is part of the legacy ITE and Siemens CE frame family. This is a current limiting molded case circuit breaker that shares physical dimensions with the standard 125A ED frame family, but features a specialized construction for higher interrupting capacities.

The 100kAIC rating means the breaker can safely interrupt up to 100,000 amps of available fault current at 480VAC. This high interrupting capacity is characteristic of current limiting breakers used in commercial and industrial electrical distribution systems where high fault currents are present.

The bolt-on connection requires the breaker to be physically bolted to the panelboard busbars. This creates a highly secure, vibration resistant electrical and mechanical joint, which prevents arcing and overheating in demanding industrial environments compared to standard plug-in connections.

The thermal magnetic design provides dual protection. The thermal component utilizes a bimetallic strip that bends and trips the breaker during sustained overloads, providing long time protection. The magnetic component reacts to extreme current spikes, such as short circuits, to provide an instantaneous trip.

Yes, a 3 pole breaker can be utilized in a single phase system by wiring the load across two of the three poles. The panelboard must be able to accommodate the physical footprint of a 3 pole bolt-on frame, and the installation must comply with local electrical codes.