The Siemens 3RV2031-4RA10 is a premium Motor Protection Circuit Breaker (MPCB) from the trusted SIRIUS 3RV2 series, designed to protect three-phase motors against overload, short-circuit, and phase failure. With an adjustable overload current range of 70–80A and a 1040A magnetic short-circuit release, this Class 10 motor protection circuit breaker ensures fast and reliable tripping, helping to prevent costly motor damage and unexpected downtime. It features a compact S2 frame, 3-pole design, screw terminal connections, and standard switching capacity, making it an ideal choice for industrial motor starter applications.
The Siemens 3RV2031-4RA10 is suitable for protecting three-phase induction motors up to 37 kW at 400V AC-3 and is widely used in Motor Control Centers (MCC), industrial control panels, pump control systems, compressors, conveyor systems, HVAC equipment, manufacturing plants, water treatment facilities, OEM machinery, and factory automation. It integrates seamlessly with Siemens SIRIUS contactors to create compact DOL and Star-Delta motor starters, providing dependable motor protection and long service life.
At SB Smart, we supply 100% genuine Siemens SIRIUS Motor Protection Circuit Breakers with competitive pricing, expert technical support, GST invoices, bulk order discounts, and fast delivery across India, ensuring you receive authentic Siemens products backed by reliable service.
Genuine Siemens SIRIUS 3RV2 Motor Protection Circuit Breaker
Model: 3RV2031-4RA10
Frame Size: S2
Adjustable Overload Setting: 70–80A
Magnetic Short-Circuit Release: 1040A
Class 10 Thermal Trip Characteristic
3-Pole Design
Screw Terminal Connections
Standard Switching Capacity
Phase Failure Protection
Compatible with Siemens SIRIUS Contactors
Ideal for DOL and Star-Delta Motor Starters
Compact, Durable Industrial Design
Motor Control Centers (MCC)
Industrial Automation Panels
DOL Motor Starters
Star-Delta Motor Starters
Pump Control Panels
Compressors
Conveyor Systems
HVAC Systems
Water Treatment Plants
OEM Electrical Panels
Manufacturing Plants
Factory Automation
Reliable overload and short-circuit motor protection
Minimizes motor damage and unexpected downtime
Improves equipment safety and operational reliability
Compact design saves control panel space
Easy installation with screw terminals
Long mechanical and electrical service life
Suitable for continuous industrial operation
Reduces maintenance costs
It is a Motor Protection Circuit Breaker (MPCB) designed to protect three-phase motors from overload, phase failure, and short-circuit faults in industrial applications.
The breaker has an adjustable thermal overload range of 70A to 80A.
It features a 1040A magnetic short-circuit release for rapid fault protection.
Yes. It is commonly used with Siemens SIRIUS contactors in DOL and Star-Delta motor starter panels.
Yes. SB Smart supplies 100% genuine Siemens industrial products with technical support, GST invoices, competitive pricing, and fast delivery across India.
| Parameter | Specification |
|---|---|
| Brand | Siemens |
| Series | SIRIUS 3RV2 |
| Model Number | 3RV2031-4RA10 |
| Product Type | Motor Protection Circuit Breaker (MPCB) |
| Frame Size | S2 |
| Thermal Overload Setting (A-Release) | 70.00–80.00 A |
| Magnetic Trip (N-Release) | 1040 A |
| Tripping Class | Class 10 |
| Number of Poles | 3 |
| Rated Operational Voltage | 20–690 V AC |
| Rated Operational Current | 80 A |
| Rated Insulation Voltage | 690 V |
| Rated Impulse Withstand Voltage | 6 kV |
| Operating Frequency | 50/60 Hz |
| Connection Type | Screw Terminal |
| Switching Capacity | Standard |
| Degree of Protection | IP20 |
| Mechanical Endurance | 20,000 Operating Cycles |
| Electrical Endurance | 20,000 Operating Cycles |
| Operating Temperature | -20°C to +60°C |
| Storage Temperature | -50°C to +80°C |
| Maximum Installation Altitude | 2,000 m |
| Relative Humidity | 10–95% |
| Approximate Weight | 1.18 kg |
| Mounting | 35 mm DIN Rail / Panel Mount |
| Application | Motor Overload and Short-Circuit Protection |
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