The Siemens 3VA1120-5GE42-0AA0 is a high-performance SENTRON 3VA1 Molded Case Circuit Breaker (MCCB) designed for reliable protection of low-voltage electrical installations. This 4-pole MCCB features a thermal-magnetic (TM220) trip unit with adjustable overload protection and high short-circuit breaking capacity of 55kA at 415V AC. Engineered for industrial, commercial, and infrastructure applications, it provides dependable protection against overloads and short circuits while ensuring operational safety and long service life. The compact design, robust construction, and compliance with IEC standards make it ideal for distribution panels, switchboards, motor feeders, and power distribution systems.
• Siemens SENTRON 3VA1 Series Molded Case Circuit Breaker (MCCB)
• Part Number: 3VA1120-5GE42-0AA0
• Rated Current: 20A
• 4 Pole Configuration
• Thermal-Magnetic Trip Unit (TM220)
• Adjustable Overload Protection (Ir: 14A – 20A)
• High Breaking Capacity: 55kA at 415V AC
• Short-Circuit Protection Setting: Ii = 16 x In
• Neutral Protection: 100% Rated Current
• Compact Frame Size 160
• Fixed Mounted Design
• Front Connection Terminals
• Screw Connection Type
• High Mechanical and Electrical Endurance
• Suitable for Industrial and Commercial Power Distribution
• IEC 60947-2 Compliant
• Reliable Protection Against Overloads and Short Circuits
• Ideal for Distribution Panels, MCC Panels, and Switchboards
| Parameter | Specification |
|---|---|
| Product Series | Siemens SENTRON 3VA1 |
| Part Number | 3VA1120-5GE42-0AA0 |
| Product Type | Molded Case Circuit Breaker (MCCB) |
| Frame Size | 160 |
| Number of Poles | 4 Pole |
| Rated Current (In) | 20A |
| Trip Unit Type | TM220 Thermal-Magnetic |
| Overload Protection Range (Ir) | 14A – 20A |
| Instantaneous Short Circuit Protection (Ii) | 16 × In |
| Breaking Capacity (Icu) @ 415V AC | 55kA |
| Breaking Capacity Class | Class M |
| Rated Operational Voltage (AC) | Up to 690V AC |
| Rated Operational Voltage (DC) | Up to 600V DC |
| Rated Insulation Voltage | 800V |
| Frequency | 50/60 Hz |
| Neutral Protection | 100% In |
| Mounting Type | Fixed Mounting |
| Connection Type | Front Screw Terminal |
| Degree of Protection | IP40 (Front) / IP20 |
| Mechanical Life | 20,000 Operations |
| Electrical Life | Up to 9,000 Operations |
| Standard Compliance | IEC 60947-2 |
| Application | Power Distribution Panels, MCC Panels, Switchboards, Industrial Protection Systems |
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