Contactor,circuit breaker,solar inverter,electric meter,solar batteries
Model Code Interpretation
| Segment | 3VA | 9 | 267 | -0HA | 20 |
| Meaning | Product series: SENTRON 3VA molded case circuit breaker system | Accessory category: 3VA9 series accessories | Accessory type: MO320 Front-mounted Motor Operator | Control voltage code: 110-230V AC / 110-250V DC | Applicable breaker rating: 3VA2 100/160/250A |
| Description | Flagship low-voltage power distribution series of Siemens, covering MCCBs from 16A to 1600A | Accessory system specially designed for 3VA series circuit breakers | MO320 motor operator, supporting remote closing and tripping | Wide voltage design, compatible with various power supply systems | Suitable for 3VA2 circuit breakers rated at 100A, 160A and 250A |
- Main Technical Specifications
| Parameter Category | Technical Data | Remarks |
| General Information | ||
| Product Name | MO320 Front-mounted Motor Operator | For 3VA2 series molded case circuit breakers |
| Order No. | 3VA9267-0HA20 | Standard commercial model |
| Product Status | Active (PM300) | Defined by Siemens Product Lifecycle Management System |
| Electrical Parameters | ||
| Control Voltage | 110-230V AC (50/60Hz) / 110-250V DC | Wide voltage compatibility |
| Rated Apparent Power | 250VA | Power consumption of the operator |
| Operating Time (Closing & Tripping) | Typical 1 second | Mechanical response time |
| Mechanical Parameters | ||
| Dimensions (W×H×D) | 105mm×75mm×132mm | Compact design to save cabinet space |
| Weight | Approx. 846g | Easy for installation and maintenance |
| Terminal Capacity | For 1.5-2.5mm² conductors | Solid, stranded and fine-stranded conductors applicable |
| Wire Stripping Length | 7mm | Compliant with IEC standards |
| Tightening Torque | 0.36-0.44N·m | Ensure reliable connection |
| Environmental Parameters | ||
| Operating Temperature | -25°C to +70°C | Suitable for industrial environments |
| Storage Temperature | -40°C to +80°C | Wide temperature range for storage |
| Ingress Protection | IP30 | Compliant with IEC 60529 |
- Full Range of MO320 Motor Operators
| Model | Control Voltage | Applicable Breaker Series | Remarks |
| 3VA9267-0HA10 | 24-60V DC | 3VA2 100/160/250 | Low voltage DC type |
| 3VA9267-0HA20 | 110-230V AC / 110-250V DC | 3VA2 100/160/250 | Universal wide voltage type (Current Model) |
| 3VA9157-0HA10 | 24-60V DC | 3VA1 100/160 | For 3VA1 series |
| 3VA9157-0HA20 | 110-230V AC / 110-250V DC | 3VA1 100/160 | For 3VA1 series |
| 3VA9467-0HA10 | 24-60V DC | 3VA2 400/630 | For high-current 3VA2 breakers |
| 3VA9467-0HA20 | 110-230V AC / 110-250V DC | 3VA2 400/630 | For high-current 3VA2 breakers |
| 3VA9257-0HA10 | 24-60V DC | 3VA2 100/160 | Side-mounted type |
| 3VA9257-0HA20 | 110-230V AC / 110-250V DC | 3VA2 100/160 | Side-mounted type |
- Competitor & Equivalent Model List
| Brand | Model | Applicable Breaker | Control Voltage | Replacement Description |
| Siemens | 3VA9267-0HA10 | 3VA2 100/160/250 | 24-60V DC | Low-voltage alternative within the same series |
| Schneider Electric | LV432642 | NSX 400-630 | 380-415V AC | Functional cross-brand replacement |
| ABB | CD2-400 | T1-T6 Series | 220V AC/DC | Functional cross-brand replacement |
| ABB | OTM-D250 | Tmax Series | 24-250V AC/DC | Functional cross-brand replacement |
| Eaton | NZM-E200 | NZM Series | 24-230V AC/DC | Functional cross-brand replacement |
- Application Environments & Industry Cases
5.1 Recommended Application Scenarios
Industrial Automation Systems: Remote closing and tripping of motor circuits for production line automatic control
Data Centers: Remote operation of breakers for UPS systems to improve power supply reliability
Commercial Buildings: Remote control of breakers for emergency lighting and fire protection systems, complying with safety regulations
Energy Infrastructure: Remote monitoring of breakers for photovoltaic inverters and energy storage systems to boost operation efficiency
Water Treatment Facilities: Automatic switching of pump circuits to realize unattended operation
5.2 Non-recommended Scenarios
Explosive Hazardous Areas: Additional explosion-proof certification is required; not suitable for direct use in IIC explosive zones
High Electromagnetic Interference Environments: Extra electromagnetic shielding is needed; not recommended near unshielded high-frequency equipment
Severe Vibration Environments: Not applicable where vibration acceleration exceeds 5g, which may impair mechanical reliability
5.3 Typical Application Cases
Case 1: Automobile Manufacturing Plant
Application: Remote control of power circuits for welding robots
Configuration: 3VA2 250A MCCB + 3VA9267-0HA20 Motor Operator + PLC Control System
Benefits: Realize automatic power-off protection for production lines, reduce manual operation and increase productivity by 15%
Case 2: Large-scale Data Center
Application: Remote management of Power Distribution Units (PDU) in server cabinets
Configuration: 3VA2 160A MCCB + 3VA9267-0HA20 + Building Management System (BMS)
Benefits: Remote monitoring and circuit switching, quick fault isolation; Mean Time To Repair (MTTR) reduced to less than 5 minutes
Case 3: Hospital Operating Room
Application: Emergency control of dedicated power circuits for medical equipment
Configuration: 3VA2 100A MCCB + 3VA9267-0HA20 + Emergency Control System
Benefits: Fast power switching for operating rooms, ensure safe operation of medical devices; compliant with IEC 60601 medical standards
- Selection Tips & Quick Reference Rules
Selection Rhythm (For Reference)
Model 3VA9267-0HA20,
Covers 110 to 230V AC/DC,
Matches 3VA2 100/160/250A breakers,
Front-mounted MO320 design,
One second for remote switch action,
Rated power at 250VA,
Dimension 105×75×132mm,
Ideal for industrial and building applications.
Quick Reference Rules
- Voltage Matching: HA20 = Wide voltage (110-230V AC / 110-250V DC); HA10 = Low voltage (24-60V DC)
- Applicable Series: 9267 = 3VA2 100/160/250A; 9157 = 3VA1 100/160A; 9467 = 3VA2 400/630A
- Mounting Type: 9267 = Front-mounted; 9257 = Side-mounted
- Core Parameters: 1-second operating time, 250VA power rating, compatible with 1.5-2.5mm² conductors
- Troubleshooting & Solutions
| Fault Phenomenon | Possible Causes | Solutions |
| Failure to close or trip | Abnormal control voltage | Verify the voltage is within 110-230V AC / 110-250V DC |
| Loose wiring terminals | Retighten terminals with torque of 0.36-0.44N·m | |
| Mechanical jamming | Check connection between operator and breaker, remove foreign objects | |
| Slow closing/tripping | Insufficient power supply capacity | Ensure control circuit power ≥ 250VA |
| Excessively low ambient temperature | Apply heating measures when temperature is below -25°C | |
| Excessive operating noise | Mechanical wear | Inspect transmission parts and replace grease if necessary |
| Unstable installation | Re-fix the operator and ensure flat mounting surface |
- Key Features Summary
- Wide Voltage Compatibility: 110-230V AC / 110-250V DC, reducing spare parts stock and procurement costs
- Fast Response: Typical 1-second operating time, meeting emergency control requirements
- Compact Structure: Dimension 105×75×132mm, saving space inside switchgear cabinets
- High Reliability: Operating temperature range from -25°C to +70°C, adaptable to harsh industrial conditions
- Easy Installation & Maintenance: Standard interface for perfect matching with 3VA2 series breakers
Typical Application Cases of Siemens 3VA9267-0HA20 (MO320 Motor Operator)
This accessory is designed for 3VA2 100/160/250A molded case circuit breakers to realize remote motorized closing and tripping. With control voltage of 110–230V AC / 110–250V DC, it is widely applied in industrial, data center, building and energy sectors.
- Automobile Welding Workshop (Industrial Automation)
Configuration: 3VA2 250A + 3VA9267-0HA20 + PLC / Fieldbus System
Application: Remote switching and automatic fault isolation for power circuits of welding robots and welders
Benefits: Minimize manual work, improve workshop safety; cut downtime via remote power-off during faults
- Large-scale Data Center (Infrastructure)
Configuration: 3VA2 160A + 3VA9267-0HA20 + BMS / EMS
Application: Centralized remote control for cabinet PDUs, UPS outputs and precision air conditioners
Benefits: Remote inspection and circuit operation, rapid fault location and isolation; wide voltage design compatible with global mains power
- Commercial Complex & High-rise Buildings (Smart Power Distribution)
Configuration: 3VA2 100–250A + 3VA9267-0HA20 + Fire Alarm / BAS System
Application: Interlocked control for emergency lighting, fire pumps and exhaust fans; remote power cut for energy saving during off-hours
Benefits: Comply with mandatory fire power cut regulations; lower operation costs and improve energy efficiency
- Photovoltaic & Energy Storage Power Stations (New Energy)
Configuration: 3VA2 250A + 3VA9267-0HA20 + Power Station Monitoring System
Application: Remote grid connection/disconnection and fault protection for AC sides of inverters and energy storage cabinets
Benefits: Adapt to wide outdoor temperature (-25°C to +70°C); realize remote operation and reduce on-site inspection work
- Hospital Operating Room & ICU (Medical Power Supply)
Configuration: 3VA2 100A + 3VA9267-0HA20 + Medical Isolated Power System
Application: Emergency switching and protection for surgical equipment and life support systems
Benefits: Fast switching (approx. 1 second), high operational reliability and compliance with medical power supply standards
- Water Treatment & Pumping Stations (Municipal Engineering)
Configuration: 3VA2 160–250A + 3VA9267-0HA20 + Pump Station PLC
Application: Remote start/stop and overload protection for submersible pumps, blowers and chemical dosing equipment
Benefits: Suitable for humid and dusty environments; unattended remote control to reduce operation costs
Core Matching Points
Applicable Breakers: 3VA2 100/160/250A (3-pole / 4-pole)
Control Voltage: 110–230V AC / 110–250V DC (Universal wide voltage)
Mounting Type: Front-mounted (MO320), Dimension: 105×75×132mm
Key Functions: Remote closing & tripping, fault isolation; suitable for industrial, building and new energy applications
