SIEMENS SIRIUS 3RV2021-1BA10 Motor Starter Protector, 0.7-1.0 A, 3-Pole, Screw Terminals

In industrial control panels, the SIEMENS 3RV2021-1BA10 motor starter protector safeguards three-phase motors up to 1 A. This SIRIUS 3RV2 series device from size S00 combines thermal and magnetic trip functions to protect against overload and short circuit. It mounts on a DIN rail or with screw fixing and connects via screw terminals.

Key specifications

• Overload release setting range: 0.7 – 1.0 A
• Short-circuit release (magnetic) setting: 13 A fixed
• Rated operational voltage: 690 V AC
• Short-circuit breaking capacity at 400 V: 100 kA (Icu and Ics)
• Number of poles: 3
• Connection type: screw terminals
• Mounting: DIN rail or screw fixing
• Protection class: IP20 front
• Ambient operating temperature: -20 to +60 °C
• Electrical endurance: 100,000 cycles
• Mechanical endurance: 10,000,000 cycles
• Standards: IEC, UL, CSA

Why choose it

The SIRIUS 3RV2 offers reliable motor protection with a wide setting range and high breaking capacity. Its compact S00 size saves panel space, and screw terminals ensure secure wiring. The device meets international standards for global use.

Ideal use cases

• Protecting small three-phase motors in industrial machinery
• Motor control centers and distribution boards
• Applications requiring DIN rail mounting and screw connections

Good to know

The device is part of the SIRIUS modular system, allowing easy combination with contactors and other accessories. It is suitable for use in ambient temperatures from -20 to +60 °C.