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3VA1120-4EF46-0AA0
Molded case circuit breaker (MCCB) 3VA1, 150 / 160 A, TM240, ATAM, 4 pole, Connection to cables
- Stock status:
- Call for availability
- Manufacturer:
- Siemens
- Product code:
- 3VA1120-4EF46-0AA0
Main documents
- Product datasheet
- Instruction sheet
- Catalogue
Related products
| Product | |
| Article Number (Market Facing Number) | 3VA1120-4EF46-0AA0 |
| Product Description | circuit breaker 3VA1 IEC Frame 160 breaking capacity class S Icu=36 kA @ 415 V 4-pole, line protection TM240, ATAM, In=20 A overload protection Ir=14 A…20 A short-circuit protection Ii=8…16 x In N conductor unprotected terminal connection |
| Product family | 3VA Molded Case Circuit Breakers up to 1600 A, IEC |
| Product Lifecycle (PLM) | PM300:Active Product |
| Price data | |
| Region Specific PriceGroup / Headquarter Price Group | 12P / 1CB |
| List Price | Show prices |
| Customer Price | Show prices |
| Surcharge for Raw Materials | None |
| Metal Factor | LOA—– |
| Additional Product Information | ||
| EAN | 4042948820773 | |
| UPC | 804766427213 | |
| Commodity Code | 85362010 | |
| LKZ_FDB/ CatalogID | LV10.1 | |
| Product Group | 5375 | |
| Group Code | P360 | |
| Country of origin | Czech Republic | |
| Compliance with the substance restrictions according to RoHS directive | Since: 01.04.2014 | |
| Product class | C: products manufactured / produced to order, which cannot be reused or re-utilised or be returned against credit. | |
| WEEE (2012/19/EU) Take-Back Obligation | Yes | |
| REACH Art. 33 Duty to inform according to the current list of candidates | ||
| SCIP number | 24f439a9-f302-4a4d-9c32-bb0068664475 | |
Product Description
The Siemens 3VA1120-4EF46-0AA0 is a 4-pole molded case circuit breaker (MCCB) designed to provide line protection in medium power systems. It offers reliable performance in interrupting electrical faults and preventing damage to equipment.
Key Features and Specifications:
- Frame Size: 160 A (IEC standard)
- Rated Current (In): 20 A
Breaking Capacity:
- Icu (Ultimate Breaking Capacity): 36 kA at 415 V, making it suitable for medium fault level systems.
- Poles: 4-pole configuration, providing protection for three phases with an unprotected neutral conductor.
Protection Features:
- Overload Protection (Ir): Adjustable between 14 A and 20 A, allowing for customizable settings based on system requirements.
- Short-Circuit Protection (Ii): Set to 8…16x In, which provides fast response in case of short-circuit faults.
- Protection Type: Line protection TM240 with ATAM (Advanced Trip Adjustment Mechanism) for precise control of overload and short-circuit protection settings.
- Connection Type: Terminal connection for secure and simple wiring installation.
Compliance & Product Lifecycle:
- Product Lifecycle Management (PLM): PM300 – Active Product, meaning this circuit breaker is currently available and supported by Siemens.
- EAN: 4042948820773
- UPC: 804766427213
- Commodity Code: 85362010
Summary
The Siemens 3VA1120-4EF46-0AA0 MCCB is ideal for protecting systems in industrial and commercial environments that require both overload and short-circuit protection. With its 4-pole design and adjustable settings, it offers flexibility and safety in electrical system management.
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.
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