Square D IK34150 Molded Case Circuit Breaker

This breaker is designed specifically for Square D I-Line panelboards and switchboards. It features integrated plug-on jaws that engage directly with the vertical bus stack for a secure phase connection.

No, the breaker features an integrated I-Line plug-in connection. The mounting jaws are built into the breaker assembly, allowing it to attach directly to the panelboard bus without additional hardware.

The 200kA interrupting capacity at 240VAC and 480VAC allows this current-limiting breaker to be installed in commercial and industrial systems with extremely high available fault currents, safely clearing severe short circuits without sustaining internal damage.

The IK34150 features a thermal-magnetic trip unit with a fixed thermal element for long-time overload protection. The magnetic instantaneous trip function is adjustable, allowing electricians to dial in the short-circuit response based on the specific load requirements.

The standard mechanical lugs accept either aluminum or copper conductors ranging from 4 AWG up to 350 kcmil. Ensure proper torque specifications are followed during installation to prevent thermal issues at the termination points.

Current-limiting breakers like the IK34150 are engineered to clear high-magnitude faults in less than half an AC cycle. This rapid interruption restricts the peak let-through current and energy, reducing mechanical and thermal stress on the electrical infrastructure.

Yes, it shares the same physical dimensions and I-Line mounting footprint as other legacy K-Frame breakers. It can replace lower-AIC models in the same frame size when an upgraded interrupting capacity is required.