Siemens | EH3A020L | Circuit Breaker | 20A | 3-Pole | 480V | Bolt-On

Introducing the Siemens EH3A020L circuit breaker—a purpose-built, bolt-on protector designed for demanding 480V three‑phase systems. Engineered for maintenance, retrofit, and replacement projects, this 20A, 3‑pole breaker delivers reliable, predictable protection when you need to safeguard critical electrical distribution.

• Amperage: 20 A
• Poles: 3‑Pole
• Voltage rating: 480 V
• Mounting: Bolt‑On

What sets the EH3A020L apart

• Three‑pole design ensures simultaneous disconnection of all hot legs, enhancing safety and code‑compliance in 3‑phase panels.
• Bolt‑on mounting provides a robust, vibration‑resistant connection that stands up to industrial environments.
• Part number EH3A020L is your best reference for compatibility, making it easier to source the exact match for existing equipment.
• Manufactured by Siemens, a long‑standing benchmark for reliability and predictable electrical protection in commercial and industrial settings.

Who should consider this breaker?

• Facilities operating 480V three‑phase distributions that require precise 20A protection per circuit.
• Technicians performing panel retrofits, upgrades, or exchanges where a bolt‑on, plug‑in replacement is needed.
• Electrical service teams stocking a ready‑to‑install spare for Siemens panels that specify EH3A020L compatibility.

Typical use cases

• Replacing a failed or obsolete breaker in a 480V, 3‑phase distribution panel during planned maintenance.
• Integrating into retrofit projects to align protection with updated wiring and load profiles.
• Maintaining an efficient spare‑parts inventory for service contracts and on‑site response teams.

Installation and safety notes

• Always verify fit and ratings before ordering to ensure seamless panel compatibility.
• Use proper lockout/tagout procedures and enlist a qualified electrician for installation.
• Follow manufacturer torque and mounting specifications for secure bolt‑on attachment.
• Ensure the panel is de‑energized and single‑line diagrams are consulted during replacement.

If you’re upgrading a 480V three‑phase system or stocking a dependable spare for Siemens panel protection, the EH3A020L delivers consistent performance, straightforward installation, and clear compatibility guidance through its part number. Confirm fit and ratings with your current equipment and proceed with confidence to maintain uninterrupted, safe electrical operation.