Square D KAB36200 Molded Case Circuit Breaker

The KAB36200 is designed for use in Square D I-Line panelboards, switchboards, and motor control centers. It utilizes an I-Line style bolt-on connection that engages the bus stack directly for a secure mechanical and electrical fit.

The KAB36200 is a legacy K-Frame breaker. Schneider Electric has superseded the K-Frame family with the modern PowerPact J-Frame series. The PowerPact JGA36200 is a common modern equivalent for I-Line applications, though the KAB36200 remains widely used for maintaining existing infrastructure.

This breaker features a fixed thermal and adjustable magnetic trip unit. While the thermal overload protection is fixed at 200A, the magnetic short-circuit pickup can be adjusted using the dial on the front of the breaker. This allows electricians to coordinate the breaker with downstream devices and handle specific motor inrush currents.

Yes, Square D industrial thermal-magnetic circuit breakers without dedicated Line and Load markings can be reverse fed. If used as a backfed main in an I-Line panelboard, the breaker must be properly secured and labeled in accordance with NEC requirements.

No, the KAB36200 is a standard thermal-magnetic breaker with a 25kAIC rating at 480V. If your application requires a current-limiting breaker in the K-Frame footprint, you must specify an I-Limiter version, such as the IK34200.

The I-Line bolt-on design features a plug-on jaw mechanism that grips the panelboard bus bars, combined with a retaining bracket and screw that bolts the breaker to the panelboard chassis. This ensures a high-ampacity electrical connection that will not loosen under heavy fault currents or vibration.