5SL4150-7
Miniature circuit breaker 230/400 V 10kA, 1-pole, C, 50 A
- Stock status:
- Call for availability
- Manufacturer:
- Siemens
- Product code:
- 5SL4150-7
Main documents
- Product datasheet
- Instruction sheet
- Catalogue
Related products
| Product | |
| Article Number (Market Facing Number) | 5SL4150-7 |
| Product Description | Miniature circuit breaker 230/400 V 10kA, 1-pole, C, 50 A |
| 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 | 4001869440224 | |
| 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 | 21744723-4b55-459b-aee7-38b79bf774fb | |
Product Description
5SL4150-7
The Siemens 5SL4150-7 is a high-performance Miniature Circuit Breaker (MCB) designed to protect electrical circuits against overloads and short circuits. With a C-curve tripping characteristic, it is suitable for circuits with moderate inrush currents, such as those involving motor loads or inductive equipment.

Key Features and Specification
- Rated Voltage: 230/400 V AC
- Breaking Capacity: 10 kA
- Number of Poles: 1-pole
- Tripping Curve: Type C
- Rated Current: 50 A
- Type C tripping curve – suitable for circuits with moderate inrush currents
- High short-circuit protection up to 10,000 A
- Compact design for space-saving DIN rail mounting
- Robust and reliable operation over long service life
- Tool-free mounting and wiring for faster installation

Product Information
- Number: 5SL4150-7
- EAN: 4001869440224
- Commodity Code: 85362010
- Catalog ID: LV10.1
- Product Group: 3805
- Group Code: P310
- Lifecycle Status: PM300 – Active Product
Typical Applications
- Small commercial and industrial facilities
- Motor circuits and inductive loads
- HVAC systems and pumps
- General protection in control and distribution panels
Summary:
The Siemens 5SL4150-7 MCB delivers reliable circuit protection for demanding applications. With its 50 A rating and Type C tripping behavior, it ensures enhanced safety in circuits where occasional surges or moderate inrush currents are expected.
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 is an RCBO used?
✅ RCBOs (Residual Current Circuit Breakers with Overcurrent protection) are commonly used in various residential, commercial, and industrial applications. Typical use cases include power distribution boards, emergency lighting circuits, HVAC (Heating, Ventilation, and Air Conditioning) systems, socket outlets, and swimming pool equipment. RCBOs are ideal for protecting individual circuits where both earth fault and overcurrent protection are required.
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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