Square D | FIL360401021 | Circuit Breaker | 40A | 3-Pole | 600V

The Square D FIL360401021 circuit breaker delivers reliable, three‑phase protection for demanding 600V electrical systems. Designed for maintenance, retrofit, and replacement projects, this 40A, 3‑pole unit helps keep industrial loads—motors, drives, and heavy equipment—safe and properly isolated when faults occur. Rely on the exact part number FIL360401021 as your primary compatibility reference to ensure a precise fit and ratings match.

• Amperage: 40 A
• Poles: 3‑Pole
• Voltage rating: 600 V
• Application: Three‑phase circuit protection for industrial panels and equipment

Why a 3‑pole, 40A, 600V configuration matters

In three‑phase systems, a 3‑pole breaker interrupts all conductors simultaneously, delivering balanced protection across the circuit. The 40A rating is well-suited for medium‑load industrial panels and motor circuits, while the 600V rating accommodates a wide range of distribution setups found in manufacturing floors and commercial facilities.

Ideal use cases

• Maintenance, retrofit, or replacement in existing Square D panels that require 3‑phase, 40A protection
• Upgrading or consolidating protection for industrial motors, drives, and equipment operating in 600V networks
• Inventory staple for electrical contractors and facilities teams managing multi‑phase distribution

Important compatibility note

Before placing an order, confirm fit and ratings for your specific panel or equipment. The part number FIL360401021 is the most reliable reference to ensure correct interrupting capacity, mounting, and trip characteristics.

Practical considerations for installation and upkeep

• Use the exact part number when cataloging replacements to prevent mismatches
• Verify panel labeling and mounting arrangement to ensure proper fit within your enclosure
• Maintain spare units on site to minimize downtime in critical circuits