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5SY5140-7
Circuit breaker Universal current 220 V DC 230/400 V AC 10kA, 1-pole, C, 40 A
- Stock status:
- In stock
- Manufacturer:
- Siemens
- Product code:
- 5SY5140-7
Main documents
- Product datasheet
- Instruction sheet
- Catalogue
Related products
| Product | |
| Article Number (Market Facing Number) | 5SY5140-7 |
| Product Description | Circuit breaker Universal current 220 V DC 230/400 V AC 10kA, 1-pole, C, 40 A |
| Product family | Basic Devices |
| Product Lifecycle (PLM) | Active Product |
| Price data | |
| Region Specific PriceGroup / Headquarter Price Group | 12B / 1AC |
| List Price | Show prices |
| Customer Price | Show prices |
| Surcharge for Raw Materials | None |
| Metal Factor | L-O—– |
| Additional Product Information | |
| EAN | 4001869226453 |
| UPC | Not available |
| Commodity Code | 85362010 |
| LKZ_FDB/ CatalogID | LV10.1 |
| Product Group | 5505 |
| Group Code | P310 |
| Country of origin | Germany |
| Compliance with the substance restrictions according to RoHS directive | Since: 01.01.2006 |
| 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 | Lead CAS-No. 7439-92-1 > 0,1 % (w / w) |
| SCIP number | ffdab3b5-2e2d-4542-bb4f-a718d7360158 |
Product Description
5SY5140-7
The Siemens 5SY5140-7 is a single-pole universal current miniature circuit breaker (MCB) engineered to provide reliable protection against overloads and short circuits in both AC and DC electrical systems. Featuring a C-characteristic tripping curve and a 10 kA breaking capacity, it ensures safe operation in circuits with moderate inrush currents. Its universal voltage capability (220 V DC / 230/400 V AC) makes it suitable for a wide range of residential, commercial, and industrial applications.
Key Features and Specification
- Rated Current (In): 40 A
- Rated Voltage (Un): 220 V DC / 230/400 V AC
- Breaking Capacity: 10 kA
- Poles: 1
- Tripping Curve: C Characteristic (for moderate inrush currents)
- Device Type: Universal Current Miniature Circuit Breaker (MCB)
- Installation: Standard DIN rail mounting
- Country of Origin: Germany
Technical Information
- Number: 5SY5140-7
- EAN: 4001869226453
- Commodity Code: 85362010
- Catalog Reference: LV10.1
- Product Family: Basic Devices
- Product Group: 5505
- Group Code: P310
- Lifecycle Status: Active Product
- Product Class: B – Return restricted (contact Siemens partner)
Applications
- Provides protection for circuits in residential, commercial, and industrial installations
- Suitable for circuits with moderate inductive and mixed loads such as motors, pumps, and lighting
- Ensures reliable short-circuit and overload protection in AC and DC networks
- Flexible universal voltage compatibility enables broad deployment
Summary:
The Siemens 5SY5140-7 MCB delivers robust protection with a 40 A rated current and 10 kA breaking capacity. Its C-curve tripping characteristic makes it ideal for circuits experiencing moderate inrush currents. Designed for universal current applications (220 V DC / 230/400 V AC) and compliant with environmental and safety regulations, this MCB ensures reliable and safe operation across diverse power distribution systems.
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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