Siemens SIRIUS 3RV2 Motor Starter Protector 3RV2021-1EA15, 1.6-2.5 A, 3-pole, 690 V

With a short-circuit breaking capacity of 100 kA at 400 V, this Siemens SIRIUS 3RV2 motor starter protector delivers robust protection for motors up to 2.5 A. The 3-pole device combines thermal and magnetic tripping for reliable overload and short-circuit protection.

Overview

The 3RV2021-1EA15 is a compact motor starter protector from the SIRIUS 3RV2 series. It is designed for DIN rail mounting and features screw terminals for secure connection. The adjustable current setting ranges from 1.6 A to 2.5 A, allowing precise adaptation to the motor's rated current. The instantaneous short-circuit trip is fixed at 32.5 A.

What stands out

• High breaking capacity: 100 kA at 400 V AC
• Wide operating temperature range: -20 °C to +60 °C
• Long mechanical service life: 10 million switching cycles
• Electrical service life: 100,000 switching cycles
• Degree of protection: IP20 on the front

Technical details

• Product type: Motor starter protector
• Series: SIRIUS 3RV2
• Number of poles: 3
• Rated operational current setting range: 1.6 - 2.5 A
• Rated insulation voltage (Ui): 690 V
• Rated impulse withstand voltage (Uimp): 6 kV
• Tripping characteristic: Thermal-magnetic
• Instantaneous short-circuit trip setting: 32.5 A
• Rated operational voltage (Ue): 690 V AC
• Mounting type: DIN rail (35 mm)
• Connection type: Screw terminals
• Degree of protection: IP20 (front), IP00 (terminals)
• Operating temperature range: -20 to +60 °C
• Power loss: 4.5 W at rated current

Our verdict

A reliable choice for motor protection in industrial applications, offering high breaking capacity and a wide adjustment range in a compact DIN rail housing.