Siemens 3RV2021-1BA10 - Circuit Breaker | AmpState

Siemens 3RV2021-1BA10 molded case circuit breaker from AmpState delivers reliable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Its compact molded-case design frees valuable space in the enclosure, helping you optimize panel layout without sacrificing performance. The thermal-magnetic trip unit provides stable, repeatable protection across varying temperatures and electrical loads, reducing nuisance trips and helping protect both wiring and devices downstream.

Key advantages

• Compact molded-case design to maximize panel space and streamline installations
• Thermal-magnetic trip unit for stable, repeatable protection under diverse operating conditions
• Designed for seamless compatibility with matching Siemens OEM load centers and panelboards
• Versatile for residential, commercial, and light industrial electrical systems

Technical snapshot

• Manufacturer: Siemens
• Part Number: 3RV2021-1BA10
• Type: Thermal-magnetic molded case circuit breaker
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

Upgrade or retrofit projects where space is at a premium and reliable protection is essential. This breaker is compatible with Siemens panel families, making it a practical choice for new installations in residential service entrances, as well as commercial and light industrial distribution panels. Use it to safeguard branch circuits from overloads and the damaging effects of short circuits, helping maintain uptime and safety in your electrical system.

Installation and compatibility notes

Pair the 3RV2021-1BA10 with Siemens OEM load centers and panelboards to ensure cohesive performance and predictable trip behavior. Confirm that the chosen breaker matches the panel’s listing and the overall system requirements before installation. For ongoing protection, maintain proper torque on terminations and follow standard electrical safety practices during any service or replacement work.