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5SP4392-7
Miniature circuit breaker 400 V 10kA, 3-pole, C, 125 A, D=70 mm
- Stock status:
- Call for availability
- Manufacturer:
- Siemens
- Product code:
- 5SP4392-7
Main documents
- Product datasheet
- Instruction sheet
- Catalogue
Related products
| Product | |
| Article Number (Market Facing Number) | 5SP4392-7 |
| Product Description | Miniature circuit breaker 400 V 10kA, 3-pole, C, 125 A, D=70 mm |
| 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-O—– |
| Additional Product Information | ||
| EAN | 4001869195469 | |
| UPC | Not available | |
| Commodity Code | 85362090 | |
| LKZ_FDB/ CatalogID | LV10.1 | |
| Product Group | 5505 | |
| Group Code | P310 | |
| Country of origin | Turkiye | |
| Compliance with the substance restrictions according to RoHS directive | Since: 01.10.2006 | |
| 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 | c5ebb6b3-a76b-4131-aa4c-f6cf4fffec6c | |
Product Description
5SP4392-7
The Siemens 5SP4392-7 is a high-performance 3-pole miniature circuit breaker (MCB) designed for the protection of heavy-duty three-phase systems. Operating at 400 V AC, it delivers a strong short-circuit breaking capacity of 10 kA, ensuring maximum safety in demanding industrial and commercial applications. Featuring a Type C tripping characteristic and a rated current of 125 A, it is ideal for circuits with moderate inrush currents. Its 70 mm compact installation depth allows for easy integration into modern power distribution systems.
Key Features and Specification
- Product Code: 5SP4392-7
- Rated Voltage: 400 V AC
- Breaking Capacity: 10 kA
- Number of Poles: 3
- Tripping Characteristic: Type C
- Rated Current: 125 A
- Installation Depth: 70 mm
- EAN: 4001869195469
- Commodity Code: 85362090
- Catalog ID: LV10.1
- Product Group: 5505
- Lifecycle Status: Active Product (PM300)
Applications
- Industrial and commercial three-phase protection
- High-current equipment and motor circuits
- Power distribution in energy-intensive facilities
- Electrical panels requiring high-capacity, space-saving solutions
Summary:
The Siemens 5SP4392-7 is a robust 125 A 3-pole miniature circuit breaker that combines powerful 10 kA short-circuit protection with a compact 70 mm form factor. With its Type C tripping curve, it ensures safe and efficient performance in heavy-load three-phase environments.
Frequently Asked Questions
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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