Siemens 3RV2021-1KA10 5A 3P 690V Circuit Breaker | AmpState

Meet the Siemens 3RV2021-1KA10—a reliable, three-pole circuit breaker designed to shield your electrical distribution network from overloads and faults. Engineered for panelboards, load centers, and broader electrical distribution systems, this device delivers solid protection for three-phase circuits up to 690 V, making it a dependable choice for both new installations and retrofit projects.

• Part Number: 3RV2021-1KA10
• Type: Circuit Breaker
• Amperage: 5 A
• Poles: 3
• Voltage Rating: 690 V
• Manufacturer: Siemens
• Applications: panelboards, load centers, and electrical distribution networks

Designed for retrofit and maintenance planning

When service lives require continuity in part numbers, the 3RV2021-1KA10 shines. Its standardized Siemens designation ensures compatibility with existing Siemens infrastructure, reducing downtime during replacements and maintenance while keeping your documentation and spares aligned with your installed base.

Ideal use scenarios

• Spare parts stocking for industrial and commercial facilities that rely on Siemens protection devices
• Retrofit projects where preserving a known part number simplifies procurement and ensures consistent performance
• Preventive maintenance schedules in panelboards and distribution units that protect three-phase equipment
• New installations in systems designed around 690 V three-phase protection with 5 A circuit protection

Why this Siemens circuit breaker stands out

Rather than a generic replacement, the 3RV2021-1KA10 offers a precise fit for Siemens-based electrical layouts, helping you maintain equipment warranties and streamline service histories. Its 3-pole configuration ensures balanced protection across all three phases, contributing to safer operation of motors, drives, and other three-phase loads.

Support and compatibility

Need help confirming compatibility with your existing panel or distribution setup? Our team can verify fit and guide you to the right solution. This item is available from AmpState, with assistance to ensure you’re selecting the correct part for your Siemens-based system.