The Siemens SIRIUS Motor Protection Circuit Breaker (MPCB) – 3RV20314UB10 is a premium motor protection device designed to protect three-phase motors against overload, short-circuit, and phase failure in industrial motor control applications. As part of the trusted Siemens SIRIUS 3RV2 series, this motor protection circuit breaker combines motor protection, switching, and isolation functions in a compact design, ensuring safe and reliable operation of electrical systems. The 3RV20314UB10 is a Class 20 motor protection circuit breaker, making it suitable for motors with longer starting times and demanding industrial applications.
The Siemens 3RV20314UB10 MPCB is widely used in Motor Control Centers (MCC), Direct-On-Line (DOL) starters, Star-Delta starters, industrial control panels, pump control systems, compressors, conveyor systems, machine tools, HVAC equipment, manufacturing plants, OEM machinery, and industrial automation systems. It provides dependable motor protection, minimizes equipment damage, reduces downtime, and improves the overall reliability of industrial operations.
Manufactured with Siemens' advanced engineering and high-quality standards, this SIRIUS Motor Protection Circuit Breaker delivers reliable tripping performance, long service life, and easy installation. It is trusted by panel builders, OEMs, electrical contractors, maintenance engineers, and industrial professionals who require dependable motor protection in demanding industrial environments.
At SB Smart, we supply genuine Siemens SIRIUS Motor Protection Circuit Breakers, motor starter protectors, and industrial electrical products with competitive pricing, expert technical support, bulk order assistance, and fast PAN India delivery.
Genuine Siemens SIRIUS Motor Protection Circuit Breaker
Reliable overload and short-circuit protection
Class 20 motor protection for demanding applications
Protects against phase failure
Provides safe motor isolation and switching
Compact and space-saving design
Durable industrial-grade construction
Reliable tripping performance
Easy installation and maintenance
Long operational service life
Trusted Siemens engineering and quality
Motor Control Centers (MCC)
Direct-On-Line (DOL) Starters
Star-Delta Starters
Industrial Control Panels
Pump Control Systems
Compressor Panels
Conveyor Systems
Machine Tools
HVAC Systems
Manufacturing Plants
Water Treatment Plants
Cement Plants
Steel Plants
Mining Industry
OEM Machinery
Industrial Automation Systems
Protects motors against overload and short-circuit faults
Helps prevent motor overheating and damage
Improves operational safety
Reduces maintenance costs and downtime
Extends motor service life
Ensures reliable motor starting and operation
Easy integration into motor starter assemblies
Suitable for continuous industrial applications
Cost-effective motor protection solution
100% Genuine Siemens Products
Competitive Industrial Pricing
Expert Technical Support
Bulk Order Assistance
Fast PAN India Delivery
Secure Packaging
Trusted Industrial Electrical Supplier
GST Invoice Available
Responsive Customer Support
It is used to protect three-phase electric motors against overload, short-circuit, and phase failure in industrial motor control systems.
It is commonly installed in MCC panels, DOL starters, star-delta starters, industrial control panels, pump systems, compressors, conveyors, and OEM machinery.
The SIRIUS 3RV2 series combines motor protection, switching, and isolation in one compact device, offering reliable performance, long service life, and easy integration into motor starter assemblies.
It is widely used in manufacturing plants, water treatment facilities, HVAC systems, mining, cement, steel, food processing, and industrial automation applications.
Yes. SB Smart supplies genuine Siemens SIRIUS motor protection circuit breakers with competitive pricing, expert technical support, bulk order assistance, and fast PAN India delivery.
| Parameter | Specification |
|---|---|
| Brand | Siemens |
| Series | SIRIUS 3RV2 |
| Model Number | 3RV2031-4UB10 |
| Product Type | Motor Protection Circuit Breaker (MPCB) |
| Frame Size | S2 |
| Thermal Overload Setting (A-Release) | 32.00–40.00 A |
| Magnetic Trip (N-Release) | 585 A |
| Tripping Class | Class 20 |
| Number of Poles | 3 |
| Rated Operational Voltage | 20–690 V AC |
| Rated Operational Current | 40 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 | 1.114 kg |
| Mounting | 35 mm DIN Rail / Panel Mount |
| Application | Motor Overload and Short-Circuit Protection for Long Starting Time Motors |
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