Siemens 3RV2021-1EA15 Circuit Breaker, 4A, 3-Pole

Siemens 3RV2021-1EA15 Circuit Breaker — a purpose-built 4 A, 3‑pole protective device engineered for demanding industrial electrical service, maintenance, and replacement projects. This genuine Siemens part integrates with standard industrial panels to safeguard three‑phase circuits, helping keep downtime to a minimum and ensuring reliable protection where every amp matters.

Designed for dependable performance in challenging environments, the 3RV2021-1EA15 delivers solid protection across all three phases. Its three‑pole design simplifies wiring and panel layout, enabling consistent protection for three‑phase loads such as motors, drives, conveyors, and control circuits.

• Exact 4 A protection for three‑phase circuits, providing precise fault protection while accommodating startups and normal operation edge cases.
• Genuine Siemens part with the correct footprint and characteristics to align with your existing equipment and maintenance schedules.
• Three‑pole configuration ensures balanced protection across all phases, reducing the risk of uneven current and protecting connected assets.
• Easy integration in industrial panels designed to slot into standard Siemens distribution configurations, helping streamline replacements and upgrades.

Compatibility & fit

To confirm this exact model fits your application, verify the part number 3RV2021-1EA15 against your equipment specifications and project requirements. This approach helps ensure proper compatibility and reliable operation in your system.

Specifications at a glance

• Amperage: 4 A
• Poles: 3
• Manufacturer: Siemens
• Part Number: 3RV2021-1EA15

Ideal use cases

• Protection for three‑phase power distribution in manufacturing floors, control cabinets, and industrial panels
• Replacement part for Siemens‑based electrical systems requiring precise 4 A, three‑pole protection
• Protection of small to mid‑size motors, drives, pumps, and PLC‑driven equipment in industrial environments

Installation and best practices

Handle and install by qualified electrical personnel in accordance with applicable electrical codes and panel manufacturer guidelines. Verify mounting orientation and ensure the device’s footprint matches your panel’s configuration. Regular maintenance checks help ensure continued reliability in demanding industrial settings.

With the Siemens 3RV2021-1EA15 Circuit Breaker, you get a proven, purpose‑built solution for three‑phase protection that aligns with industrial reliability standards and supports efficient replacement in ongoing maintenance programs.