The Siemens SIRIUS 3RV2031-4WA10 Motor Protection Circuit Breaker (MPCB) is a premium industrial motor protection device designed to provide overload protection, short-circuit protection, phase failure protection, and safe motor isolation for three-phase motors. As part of the trusted Siemens SIRIUS 3RV2 series, this Size S2 Motor Protection Circuit Breaker features a Class 10 thermal overload release and a 741A magnetic short-circuit release, ensuring fast, reliable protection for industrial motors operating in demanding environments. It is ideal for Motor Control Centers (MCC), industrial automation systems, OEM machinery, pump control panels, compressors, conveyor systems, HVAC applications, and manufacturing plants.
The 3RV2031-4WA10 offers an adjustable thermal overload current range of 42–52A, 741A magnetic short-circuit release, 3-pole configuration, screw terminal connections, and standard switching capacity. Designed for operation up to 690V AC, it provides dependable protection against overload, locked rotor, phase failure, and short-circuit faults while ensuring long service life and reduced maintenance. The breaker integrates seamlessly with compatible Siemens SIRIUS S2 contactors, making it an excellent choice for Direct-On-Line (DOL) starters, Star-Delta starters, and complete motor starter assemblies.
Engineered for continuous industrial operation, the Siemens 3RV2031-4WA10 is widely used in water treatment plants, process industries, mining, cement plants, steel manufacturing, food processing facilities, packaging machinery, textile industries, and factory automation systems. Its compact design, high mechanical endurance, and Siemens engineering help maximize motor reliability, improve equipment uptime, and reduce operational costs.
At SB Smart, we supply 100% genuine Siemens SIRIUS Motor Protection Circuit Breakers (MPCB), contactors, overload relays, soft starters, MCCBs, MCBs, and industrial automation products with competitive pricing, expert technical support, GST billing, bulk order assistance, and fast PAN India delivery.
Genuine Siemens SIRIUS 3RV2 Motor Protection Circuit Breaker
Model: 3RV2031-4WA10
Frame Size: S2
Adjustable Thermal Overload Range: 42–52A
Magnetic Short-Circuit Release: 741A
Class 10 Thermal Overload Protection
Standard Switching Capacity
3-Pole Configuration
Screw Terminal Connections
Rated Operating Voltage: Up to 690V AC
Rated Insulation Voltage: 690V AC
Integrated Overload, Phase Failure & Short-Circuit Protection
Compatible with Siemens SIRIUS S2 Contactors
High Mechanical & Electrical Endurance
Suitable for DOL and Star-Delta Motor Starter Applications
Compact Industrial Design
Motor Control Centers (MCC)
Industrial Automation Systems
DOL Motor Starters
Star-Delta Starter Panels
Pump Control Panels
Compressors
Conveyor Systems
HVAC Systems
Water Treatment Plants
Mining Equipment
Cement Plants
Steel Industries
Packaging Machinery
OEM Electrical Panels
Factory Automation
Protects motors against overload and short-circuit faults
Integrated thermal overload relay reduces panel components
Reliable phase failure protection increases motor safety
Fast 741A magnetic trip ensures rapid fault clearance
Compact design saves valuable control panel space
Easy installation with secure screw terminals
Reduces maintenance costs and unexpected downtime
Long mechanical and electrical service life
Improves motor performance and overall system reliability
100% Genuine Siemens Products
Best Siemens MPCB Price in India
Expert Technical Support
Bulk Order Assistance
Fast PAN India Delivery
Secure Packaging
GST Invoice Available
Trusted Industrial Electrical Supplier
Reliable After-Sales Support
The Siemens 3RV2031-4WA10 is a Motor Protection Circuit Breaker (MPCB) used to protect three-phase motors against overload, phase failure, and short-circuit faults while providing safe electrical isolation.
The breaker provides an adjustable thermal overload current setting from 42A to 52A for accurate motor protection.
It features a 741A magnetic short-circuit release, ensuring rapid interruption of fault currents and dependable protection against electrical faults.
Yes. The 3RV2031-4WA10 is compatible with Siemens SIRIUS S2 contactors, making it ideal for DOL starters, Star-Delta starters, and motor starter combinations.
The breaker uses screw terminal connections, providing secure, vibration-resistant, and reliable wiring for industrial electrical panels.
Yes. SB Smart supplies 100% genuine Siemens SIRIUS Motor Protection Circuit Breakers with competitive pricing, technical support, GST invoices, and fast delivery across India.
| Parameter | Specification |
|---|---|
| Brand | Siemens |
| Series | SIRIUS 3RV2 |
| Model Number | 3RV2031-4WA10 |
| Product Type | Motor Protection Circuit Breaker (MPCB) |
| Frame Size | S2 |
| Thermal Overload Setting (A-Release) | 42.00–52.00 A |
| Magnetic Trip (N-Release) | 741 A |
| Tripping Class | Class 10 |
| Number of Poles | 3 |
| Rated Operational Voltage | 20–690 V AC |
| Rated Operational Current | 52 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 | 50,000 Operating Cycles |
| Electrical Endurance | 50,000 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 | 1.163 kg |
| Mounting | 35 mm DIN Rail / Panel Mount |
| Application | Motor Overload and Short-Circuit Protection |
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