Siemens 3RV2021-4AA10 - Circuit Breaker | AmpState

Meet the Siemens 3RV2021-4AA10, a molded case circuit breaker designed to protect your electrical system with precision in panelboards and loadcenters. Its compact form maximizes panel space, letting you fit more protective devices without sacrificing reliability or accessibility.

Key Benefits

• Compact molded case design uses panel space efficiently, helping you optimize layouts in tight installations.
• Thermal-magnetic trip unit provides stable, repeatable protection across varying load conditions, reducing nuisance trips and ensuring dependable operation.
• OEM-compatible compatibility is engineered for straightforward integration with matching Siemens OEM loadcenters and panelboards, simplifying installations and replacements.
• Versatile application suitable for residential, commercial, and light industrial branch circuits, delivering reliable overcurrent and short-circuit protection where it’s needed most.

What It Protects And How It Helps

The 3RV2021-4AA10 delivers targeted protection for branch circuits within panelboards and loadcenters. By guarding against overcurrent and short circuits, it minimizes electrical risk, protects wiring and devices, and helps maintain essential system uptime in both new builds and retrofit projects.

Ideal Use Scenarios

• Residential subpanel installations where space is at a premium and reliable protection is a must.
• Commercial electrical rooms requiring compact, dependable circuit protection for lighting and receptacle runs.
• Light industrial panels where robust, repeatable trip performance supports continuous operation and easy maintenance.

Compatibility & Installation Insights

Designed to pair with matching OEM Siemens loadcenters and panelboards, the 3RV2021-4AA10 streamlines ordering, stocking, and service. Its thermal-magnetic trip technology delivers consistent performance across temperature and loading scenarios, making it a trustworthy choice for technicians and facility managers alike.

Installation should align with local electrical codes and be performed by qualified personnel. Confirm panel compatibility and proper rating for your specific circuit before replacing or adding devices.

Technical Specifications

• Manufacturer: Siemens
• Part Number: 3RV2021-4AA10
• Type: Thermal-magnetic molded case circuit breaker
• Application: Branch circuit overcurrent and short-circuit protection