In summary, the Siemens 3VA1450-1AA42-0AA0 is a 500 A, 4-pole switch disconnector designed for safe isolation in low-voltage distribution systems. With its MCCB-style construction, 8 kV surge resistance, and high mechanical durability, it is a reliable solution for main switching, safety isolation, and emergency disconnection in industrial and commercial applications.
Product Catalogue
Download Product Catalogue
100% Genuine Products
Supplier of industrial electrical products
1 year warranty
The products have a warranty
3VA1450-1AA42-0AA0
switch disconnector 3VA1 IEC frame 630 4-pole SD100, In=500A without overload protection w/o short-circuit protection nut keeper kit
- Stock status:
- Call for availability
- Manufacturer:
- Siemens
- Product code:
- 3VA1450-1AA42-0AA0
Main documents
- Product datasheet
- Instruction sheet
- Catalogue
Related products
| Product | |
| Article Number (Market Facing Number) | 3VA1450-1AA42-0AA0 |
| Product Description | |
| Product family | 3VA Molded Case Circuit Breakers up to 1600 A, IEC |
| Product Lifecycle (PLM) | Active Product |
| Price data | |
| Region Specific PriceGroup / Headquarter Price Group | 12P / 53J |
| List Price | Show prices |
| Customer Price | Show prices |
| Surcharge for Raw Materials | None |
| Metal Factor | LOA—– |
| General technical data | |
| insulation voltage / rated value | 800 V |
| operating voltage / at DC / rated value | 1000 V |
| operating voltage / at AC / rated value | 690 V |
| surge voltage resistance / rated value | 8 kV |
| power loss [W] / maximum | 191 W |
| mechanical service life (operating cycles) / typical | 20 000 |
| type of device | fixed mounting |
| suitability for use / switch disconnector | Yes |
| suitability for use / main switch | Yes |
| suitability for use / safety switch | Yes |
| suitability for use / EMERGENCY OFF switch | Yes |
| Net Weight | 6.221 kg |
Product Description
Key Features and Specifications:
Product Name: 3VA1 Switch Disconnector
Product Code: 3VA1450-1AA42-0AA0
Brand: Siemens SENTRON
Product Family: 3VA Molded Case Circuit Breakers up to 1600 A (IEC)
Product Design: In MCCB design, general applications
Device Type: Switch disconnector (no protection functions)
Number of Poles: 4P
Auxiliary Switch / Release: None
Life Cycle Status: Active Product
EAN: 4042948800430
Commodity Code: 85365080
Technical Data:
Frame Size: 630 A
Rated Current (In): 500 A
Overload Protection: Not available
Short-Circuit Protection: Not available
Rated Insulation Voltage (Ui): 800 V
Rated Operational Voltage (Ue):
AC: 690 V
DC: 1000 V
Rated Surge Withstand Voltage (Uimp): 8 kV
Maximum Power Loss: 191 W
Mechanical Durability: 20,000 operations
Mounting Type: Fixed mounting
Communication Function: Not available
Net Weight: 6.221 kg
Applications:
Main disconnection switch in distribution panels
Machinery and industrial process isolation
Safety and EMERGENCY OFF switching
Maintenance and repair isolation in electrical systems
Suitable where manual isolation is required without protective functions
Summary
Frequently Asked Questions
What is the full form of MCCB in Siemens?
The full form of MCCB is Molded Case Circuit Breaker. A Siemens MCCB is designed to handle high electrical currents, often up to 1000A, making it highly reliable for industrial and commercial applications. These breakers provide advanced protection against overloads and short circuits, ensuring the safety of large electrical systems.
What is the difference between a Molded Case Circuit Breaker (MCB) and an MCCB?
The main difference between an MCB (Miniature Circuit Breaker) and an MCCB (Molded Case Circuit Breaker) lies in their capacity and applications.
✅MCBs are generally used for low-power applications, with a short-circuit breaking capacity of up to 10–15 kA. They are best suited for residential and light commercial systems.
✅ MCCBs, on the other hand, are designed for medium to high-power applications, with a breaking capacity ranging from 15 kA up to 100 kA and current ratings up to 1000A. This makes them ideal for industrial environments where large electrical loads need reliable protection.
Which company circuit breaker is best?
✅ In 2025, the leading circuit breaker brands include Siemens, Schneider Electric, ABB, Eaton, and Legrand. Among them, Siemens MCCBs—especially the Sentron 3VA series—stand out for safety, durability, and advanced circuit protection in industrial and commercial applications.
What breakers work in a Siemens box?
Siemens QT, QP, QAF, and QPF breakers fit Siemens panels. However, not all breakers are interchangeable—e.g., a QT breaker cannot replace a QP breaker. Always check compatibility before replacing.
Reviews
There are no reviews yet.