5SL4303-7
Miniature circuit breaker 400 V 10kA, 3-pole, C, 3A
- Stock status:
- In stock
- Manufacturer:
- Siemens
- Product code:
- 5SL4303-7
Main documents
- Product datasheet
- Instruction sheet
- Catalogue
Product | |
Article Number (Market Facing Number) | 5SL4303-7 |
Product Description | Miniature circuit breaker 400 V 10kA, 3-pole, C, 3A |
Product family | Basic Devices |
Product Lifecycle (PLM) | PM300:Active Product |
Price data | |
Region Specific PriceGroup / Headquarter Price Group | 11B / 1AC |
List Price | Show prices |
Customer Price | Show prices |
Surcharge for Raw Materials | None |
Metal Factor | L-A—– |
Additional Product Information | ||
EAN | 4001869440477 | |
UPC | Not available | |
Commodity Code | 85362010 | |
LKZ_FDB/ CatalogID | LV10.1 | |
Product Group | 3805 | |
Group Code | P310 | |
Country of origin | Romania | |
Compliance with the substance restrictions according to RoHS directive | Since: 01.06.2013 | |
Product class | B: return restricted, please contact your Siemens partner/contact | |
WEEE (2012/19/EU) Take-Back Obligation | Yes | |
REACH Art. 33 Duty to inform according to the current list of candidates | ||
SCIP number | Not available |
Product Description
5SL4303-7
The Siemens 5SL4303-7 is a reliable 3-pole Miniature Circuit Breaker built for secure and efficient protection of electrical systems. With a rated operating voltage of 400 V AC and a current rating of 3 A, this MCB is equipped with a Type C tripping curve, which makes it ideal for applications involving equipment with moderate startup currents, such as fluorescent lighting, small motors, or electronic devices.
Key Features and Specification
- Rated Voltage: 400 V AC
- Rated Current: 3 A
- Tripping Characteristic: Type C
- Number of Poles: 3
- Breaking Capacity: 10 kA (IEC 60898-1 standard)
- Provides dependable protection against overload and short-circuit conditions
- Type C curve suitable for moderate inrush current loads
- Space-saving, compact design ideal for modern distribution boards
- Quick installation with screw terminals and DIN rail compatibility
- Designed for long service life and operational efficiency
Product Information
- Number: 5SL4303-7
- EAN: 4001869440477
- Commodity Code: 85362010
- Catalog ID: LV10.1
- Product Group: 3805
- Group Code: P310
- Lifecycle Status: PM300 – Active Product
Applications
Widely used in residential, commercial, and light industrial environments, this MCB is ideal for protecting lighting circuits, socket outlets, and other general-purpose loads with moderate current demands.
Summary:
The Siemens 5SL4303-7 delivers consistent protection and operational reliability, ensuring optimal safety and performance of your electrical infrastructure under both normal and fault conditions.
Frequently Asked Questions
What is MCB protection?
✅ MCB (Miniature Circuit Breaker) protects against overloads and short circuits. Overload protection works via a bimetallic strip (thermal operation), while short-circuit protection uses a tripping coil (electromagnetic operation). This ensures electrical safety in homes, businesses, and industries.
What is the rule for installing an SPD?
✅ SPD (Surge Protection Device) connections should be as short as possible to minimize the voltage protection level (Up). The total length of connections to the network and earth should not exceed 50 cm to ensure effective surge protection.
How to Set Up a Surge Protector?
1.Turn off power at the circuit breaker.
2. Remove the old outlet.
3. Connect wires to the new surge-protected outlet per the manufacturer’s instructions.
4. Secure the outlet in the box and replace the cover plate.
5. Restore power and test the outlet.
What is the use of RCCB in Siemens?
✅ Siemens Residual Current Circuit Breakers (RCCBs) protect against electric shock by detecting leakage currents. If the leakage exceeds a set limit, the RCCB immediately disconnects the circuit, ensuring safety from direct or indirect contact with live components.
Where to Install RCCB?
✅ RCCBs should be installed in the distribution board (DB box) or circuit breaker panel to protect against current leakages caused by faulty wiring, ageing insulation, or defective appliances.
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