Square D KAL361101212 Molded Case Circuit Breaker

The 1212 suffix indicates the inclusion of a factory-installed auxiliary switch. This provides 1A/1B (one normally open and one normally closed) contacts for remote status signaling and monitoring.

The KAL series is a legacy K-Frame molded case circuit breaker and is no longer actively manufactured. When upgrading infrastructure, this frame is typically replaced by the modern Square D PowerPact H-Frame or J-Frame series. However, exact KAL replacements are often sourced to maintain existing panel configurations without requiring adapter brackets or bus modifications.

This unit-mount K-Frame breaker is designed for installation in legacy Square D switchboards, motor control centers, and industrial control panels. Because it is a unit-mount device, it is bolted directly to the mounting surface and is not compatible with I-Line plug-on panelboards.

It utilizes a thermal-magnetic trip unit with a fixed thermal element for long-time overload protection and an adjustable magnetic element for instantaneous short-circuit protection. The magnetic pickup can be adjusted via a dial on the faceplate to achieve proper selective coordination with downstream devices.

Standard Square D thermal-magnetic breakers without dedicated line and load markings are generally suitable for reverse feeding. Electricians must verify the physical faceplate for any specific line/load restrictions before installing in a reverse-fed application.

Yes, it features a visual trip indicator. When the breaker trips due to an overcurrent or short-circuit event, the handle moves to a center position, allowing operators to quickly identify the tripped circuit in a crowded panel.