LAL36400 SQUARE D 3P 400A 600V 22KA

MCCB · 400A · 3-Pole · 600V · Bolt-On

The LAL36400 Square D circuit breaker is a robust 3-pole, 400A design suitable for 600V applications with a short-circuit rating of 22KA. Ideal for commercial and industrial settings, this breaker ensures reliable protection against overloads and faults. Trust in Square D quality for your electrical safety needs.

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Specifications
BrandSquare D
TypeMolded-Case (MCCB)
Amperage400 A
Poles3-Pole
Voltage600V
Interrupting Rating22 kA
MountingBolt-On
Frame / SeriesLAL
Catalogue #SQDLAL36400
Panel & Switchboard Compatibility

The Square D LAL36400 is a molded-case circuit breaker (MCCB) in the LAL frame — a 3-pole, 400 A, 600 V bolt-on device rated at 22 kA interrupting capacity. As a large-frame commercial/industrial MCCB, it is designed to mount in Square D panelboards and switchboards that accept LAL-frame bolt-on breakers (such as NF, I-Line–compatible, and equivalent Square D distribution equipment), not in residential loadcentres.

  • Suitable for commercial and industrial distribution panels operating at up to 600 V AC, 3-phase
  • Bolt-on mounting — verify your panelboard's bus rating and frame-size acceptance before installation

Not sure if this breaker fits your switchboard or panelboard? Send us your panel model and we'll confirm compatibility.

The LAL36400 carries a short-circuit interrupting rating of 22 kA at 600 V. For most commercial and industrial distribution applications this is adequate, but you should verify the available fault current at the point of installation — if your system's available fault current exceeds 22 kA, a higher-rated frame or current-limiting fuses upstream may be required to meet CEC requirements.

The LAL frame series has been discontinued by Square D/Schneider Electric. Northern Breaker Group specializes in obsolete and hard-to-find breakers and maintains inventory of legacy Square D MCCBs. Contact our Calgary, Edmonton, or Vancouver counters or submit a quote request — we'll advise on stock availability or a suitable modern equivalent.

Yes, a 3-pole 400 A MCCB like the LAL36400 can serve as a main disconnect in an appropriate Square D panelboard or switchboard, provided the equipment is listed and labelled for service-entrance use and the installation complies with the Canadian Electrical Code (CEC). Confirm the enclosure/panelboard rating and your local authority having jurisdiction (AHJ) requirements before proceeding.

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