Providing unparalleled performance and control, the P-frame circuit breakers features the exclusive Micrologic electronic trip units, which allow for a range of sophisticated applications for metering and monitoring. In addition, trip units can be interchanged in the field to allow for maximum flexibility. The compact size and small footprint of the P-frame circuit breaker permits high density installations in I-Line panelboards and switchboards. These circuit breakers are available in 100% rated construction for all unit-mount circuit breakers and up to 800A in I-Line circuit breakers to meet a broad range of commercial and industrial application needs. The P-frame circuit breakers with K interrupting rating are recommended for applications having high inrush and/or non-linear loads such as large motors, transformers, motors with soft starts, etc. Most field-installable accessories are common to all frame sizes for easier stocking and installation. Selection of four interchangeable Micrologic trip units available, with Powerlogic power metering and monitoring capabilities available in advanced trip units. This Powerpact P accessory is a neutral current transformer sensor that is rated at 250 A. This current transformer mounts externally.