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5SY5263-7
Circuit breaker Universal current 440 V DC 400 V AC 10kA, 2-pole, C, 63A
- Stock status:
- Call for availability
- Manufacturer:
- Siemens
- Product code:
- 5SY5263-7
Main documents
- Product datasheet
- Instruction sheet
- Catalogue
Related products
| Product | |
| Article Number (Market Facing Number) | 5SY5263-7 |
| Product Description | Circuit breaker Universal current 440 V DC 400 V AC 10kA, 2-pole, C, 63A |
| Product family | Basic Devices |
| Product Lifecycle (PLM) | PM300: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 | 4001869226750 | |
| 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: 01.10.2006 | |
| 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 | 9f4cb26e-e29a-4bdb-93e2-8d94adc54ae2 | |
Product Description
5SY5263-7
The Siemens 5SY5263-7 is a 2-pole Miniature Circuit Breaker (MCB) designed for universal current protection in both AC (400 V) and DC (440 V) systems. It reliably safeguards circuits against overloads and short circuits. Featuring a C-characteristic tripping curve, it is suitable for circuits with moderate inrush currents, making it ideal for applications with mixed loads, small motors, and general distribution networks.
Key Features and Specifications
- Rated Current (In): 63 A
- Rated Voltage (Un): 400 V AC / 440 V DC
- Breaking Capacity: 10 kA
- Poles: 2
- Tripping Curve: C Characteristic (for circuits with moderate inrush currents)
- Mounting: DIN rail compatible
- Product Type: Universal Current Miniature Circuit Breaker
Technical Information
- Number: 5SY5263-7
- EAN: 4001869226750
- UPC: Not available
- Commodity Code: 85362010
- Catalog Reference: LV10.1
- Product Group: 5505
- Group Code: P310
- Lifecycle Status: Active Product
- Product Family: Basic Devices
Applications
- Protection of distribution and control circuits in residential, commercial, and industrial installations
- Suitable for AC and DC systems requiring high-capacity overcurrent protection
- Well-suited for circuits with moderate inrush currents and diverse load profiles
- Enhances system reliability by effectively limiting fault currents in low-voltage systems
Summary:
The Siemens 5SY5263-7 Miniature Circuit Breaker offers robust and universal protection for modern low-voltage distribution networks. With a rated current of 63 A, dual AC/DC compatibility, and a 10 kA breaking capacity, it delivers dependable performance for demanding applications. Its C-curve tripping characteristic ensures reliable operation under conditions of moderate inrush currents, making it a trusted choice for both commercial and industrial 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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