Siemens SIRIUS 3RV2 Circuit Breaker for Transformer Protection, 3RV2411-1DA20, 2.2-3.2 A, 65 A

The Siemens SIRIUS 3RV2 circuit breaker for transformer protection, model 3RV2411-1DA20, is a high-performance 3-pole device designed to safeguard transformers against overloads and short circuits. With an adjustable overload release range of 2.2-3.2 A and a fixed short-circuit release of 65 A, it ensures reliable protection in industrial applications. The frame size S00 and screw terminal connections make it suitable for DIN rail or screw mounting, offering flexibility in installation.

Advantages

This circuit breaker provides precise overload protection with an adjustable setting, reducing the risk of nuisance tripping while ensuring equipment safety. Its high breaking capacity of 100 kA at 400 V AC guarantees robust performance under fault conditions. The compact S00 design saves space in control panels, and the IP20 front protection enhances operator safety.

Suitable for

• Transformer protection in industrial power distribution systems
• Motor control centers and switchgear assemblies
• Applications requiring reliable overload and short-circuit protection

Key specifications

• Product Type: Circuit Breaker for Transformer Protection
• Series: SIRIUS 3RV2
• Frame Size: S00
• Number of Poles: 3-pole
• Overload Release Setting Range (Ir): 2.2 - 3.2 A
• Short-Circuit Release Setting (Ii): 65 A
• Rated Operational Current (Ie): 3.2 A (at AC-3, 400 V)
• Rated Insulation Voltage (Ui): 690 V
• Rated Impulse Withstand Voltage (Uimp): 6 kV
• Rated Operational Voltage (Ue): 690 V AC
• Rated Ultimate Short-Circuit Breaking Capacity (Icu) at 400 V: 100 kA
• Rated Service Short-Circuit Breaking Capacity (Ics) at 400 V: 100 kA
• Mounting Type: DIN rail / Screw mounting
• Connection Type: Screw terminals
• Degree of Protection (IP): IP20 (front), IP00 (terminals)
• Ambient Temperature (Operation): -20 to +60 °C
• Electrical Endurance: 100,000 switching cycles
• Mechanical Endurance: 10,000,000 switching cycles
• Protection Function: Overload, Short-circuit
• Application: Transformer protection

Recommendations

For optimal performance, ensure proper coordination with upstream protective devices. Verify that the selected overload setting matches the transformer's rated current. This device is not intended for motor protection; use the appropriate SIRIUS 3RV2 motor protection circuit breaker for motor applications.