Siemens 3RV2011-1BA20 - 4-2A, Circuit Breaker

Siemens 3RV2011-1BA20 circuit breaker delivers dependable overcurrent protection for industrial and commercial electrical systems. With a 42 A rating, it is designed to isolate fault conditions quickly and protect wiring, equipment, and personnel in challenging environments.

Ideal for panelboards, switchboards, control panels, and OEM equipment, this breaker fits into distribution panels and motor control centers where reliability matters most. Built by Siemens, it offers consistent performance in automation-heavy applications and supports streamlined maintenance in ongoing operations.

Key benefits

• Precise protection: 42 A current rating ensures circuit protection tailored to your feeder and branch circuits, reducing nuisance trips and protecting sensitive loads.
• Versatile installation: Suitable for panelboards, switchboards, control panels, and OEM equipment, enabling straightforward integration into new builds or upgrades.
• Reliable Siemens design: Part of a trusted protection lineup designed for industrial, commercial, and OEM use with durable construction for demanding environments.
• Supports motor control centers: Engineered to work within motor control centers where dependable overcurrent protection keeps conveyors, pumps, and fans running with minimal downtime.
• Maintenance-friendly: Clear fault isolation and compatibility with standard Siemens distribution systems help technicians diagnose and service quickly.

Ideal use cases

Facilities that rely on robust electrical distribution will benefit from the 3RV2011-1BA20. Use it in:

• Panelboards and switchboards in manufacturing floors, processing lines, and packaging operations
• Control panels for automated machines and equipment
• OEM equipment requiring reliable overcurrent protection

Practical tips

• Verify the current rating aligns with your load profile and wire gauge to ensure precise protection without nuisance trips.
• Ensure the breaker is properly seated in compatible Siemens enclosures and follows manufacturer wiring diagrams for safe operation.
• Keep spare units on hand for quick replacements to minimize downtime during maintenance windows.