Square D | KA361251021 | Circuit Breaker | 125A | 3-Pole | 600V

The Square D KA361251021 circuit breaker is a robust protection device designed for reliable overcurrent protection in commercial and industrial electrical systems. With a 125-amp rating, a 3-pole configuration, and a 600-volt maximum rating, it’s built to handle multi-phase loads safely and consistently.

Designed for maintenance, retrofit, and replacement, this unit is the exact part to reference when compatibility matters. The KA361251021 is the best reference for ensuring you’re selecting a breaker that fits your Square D panel and matches your system’s electrical demands.

Why this circuit breaker stands out

• Exact three-pole protection: Balanced interruption across all three phases, reducing risk of neutral or phase imbalances.
• 125A capacity: Ideal for mid-range panels and circuits that require strong current handling without unnecessary tripping.
• 600V rating: Suitable for higher voltage distribution environments, increasing versatility across commercial installations.
• Proven Square D engineering: Known for reliable trip performance and compatibility with a wide range of Square D enclosures and accessories.
• Clear compatibility reference: The part number KA361251021 is your definitive guide to fit and ratings—confirm this before ordering to prevent mismatches.

Typical use scenarios include distribution panels in manufacturing lines, large office complexes, or equipment rooms where three-phase power is standard. This breaker can be a drop-in replacement for existing three-pole installations when your system’s requirements align with 125A and 600V, helping minimize downtime during maintenance or retrofit projects.

Practical tips for installation and use

• Verify fit first: Before ordering, double-check that the panel accepts a KA361251021-type breaker and that the current rating and voltage align with your circuit’s load and panel rating.
• Electrical safety: Have a qualified electrician perform installation and testing. Ensure main power is isolated and follow all local electrical codes.
• Documentation: Keep the part reference KA361251021 with your schematics and procurement records to simplify future maintenance or replacements.

In summary, the Square D KA361251021 circuit breaker provides dependable three-pole protection, robust current handling, and clear compatibility reference for hassle-free maintenance and retrofits in voltage up to 600V. It’s the practical, purpose-built choice when you need a trusted 125A, 3-pole solution that fits precise Square D systems.