Square D KAL Series Circuit Breakers
The Square D KAL series is a legacy K-Frame molded case circuit breaker rated for 250A frame size and 600VAC operation. KAL breakers cover the 70A to 250A range for motor feeder protection, commercial distribution, and industrial branch circuits.
Series Specifications
| Frame | K-Frame — 250A Frame |
|---|---|
| Amperage Range | 70A – 250A |
| Voltage | 600VAC |
| Poles | 2-Pole & 3-Pole |
| Interrupting Rating | 14kA @ 600V / 18kA @ 480V / 22kA @ 240V |
| Mounting | I-Line Plug-In |
| Trip Type | Thermal Magnetic |
History and Replacement Context
The Square D KAL K-Frame was part of the original I-Line product family. The K-Frame filled the gap between the 100A F-Frame and the 400A L-Frame, providing a versatile 250A frame for medium-duty commercial and industrial applications.
Typical Applications
- Motor feeder protection
- Commercial distribution panels
- Industrial branch circuits
- Feeder circuit protection
- HVAC equipment protection
Available Catalog Numbers
- KAL36070 — 70A, 3 pole, 600VAC
- KAL36080 — 80A, 3 pole, 600VAC
- KAL36090 — 90A, 3 pole, 600VAC
- KAL36100 — 100A, 3 pole, 600VAC
- KAL36110 — 110A, 3 pole, 600VAC
- KAL36125 — 125A, 3 pole, 600VAC
- KAL36150 — 150A, 3 pole, 600VAC
- KAL36175 — 175A, 3 pole, 600VAC
- KAL36200 — 200A, 3 pole, 600VAC
- KAL36225 — 225A, 3 pole, 600VAC
- KAL36250 — 250A, 3 pole, 600VAC
- KAL26070 — 70A, 2 pole, 600VAC
- KAL26080 — 80A, 2 pole, 600VAC
- KAL26090 — 90A, 2 pole, 600VAC
- KAL26100 — 100A, 2 pole, 600VAC
- KAL26110 — 110A, 2 pole, 600VAC
- KAL26125 — 125A, 2 pole, 600VAC
- KAL26150 — 150A, 2 pole, 600VAC
- KAL26175 — 175A, 2 pole, 600VAC
- KAL26200 — 200A, 2 pole, 600VAC