Siemens | HED43B020L | Circuit Breaker | 20A | 3-Pole | 480V

Meet the Siemens HED43B020L circuit breaker—a precise, dependable solution for protecting 480V three‑phase power systems. This 20A, 3‑pole unit is purpose-built for maintenance, retrofit, and replacement projects where exact specifications matter, helping you keep equipment safe and downtime to a minimum.

• 20 Ampere rating provides targeted protection for individual feeders and circuits in industrial installations.
• 3‑pole design supports 3‑phase power distribution, ensuring coordinated protection across all live conductors.
• 480V operating capability aligns with common industrial and commercial Power Distribution setups.
• Part number HED43B020L serves as the most reliable reference for compatibility, minimizing guesswork during replacements.
• Ideal for maintenance, retrofit, and replacement tasks where precise Siemens specifications are required.

Compatibility note: Confirm fit and ratings before ordering. The part number is the best reference to ensure this breaker matches your existing Siemens equipment and panel ratings.

Where it shines

• Industrial control panels and equipment powered by 480V three‑phase service that require a dedicated 20A protection device.
• Retrofits and upgrades where the exact Siemens HED43B020L specification is specified by the panel or system designer.
• Replacement scenarios where maintaining the electrical warranty and performance depends on a precise part match.

Why choose the Siemens HED43B020L

Rather than relying on cross‑references or generic substitutes, this breaker is designed to align with Siemens standards and legacy gear that calls for the HED43B020L designation. Its targeted 20A, 3‑pole, 480V configuration delivers consistent protection for 3‑phase circuits, helping prevent overcurrent damage, reduce system downtime, and simplify procurement with a single, definitive part number.

Practical tips for use: keep a spare HED43B020L on hand for quick swaps during scheduled maintenance, verify panel labeling and voltage requirements before installation, and document the part number in your asset records to streamline future replacements. If your project specifies Siemens accuracy and reliability, the HED43B020L is the precise, purpose‑built choice.