SIEMENS 5SN7G10A – 3-Pole 10A Molded Case Circuit Breaker | SENTRON Series
Engineering Background
The SIEMENS 5SN7G10A is a molded case circuit breaker (MCCB) from the SENTRON series, engineered for reliable overcurrent and short-circuit protection in industrial power distribution systems. Manufactured in Germany to IEC/EN 60947-2 standards, this 3-pole, 10A device is a trusted component in low-voltage switchgear panels, motor control centers, and building automation infrastructure worldwide.
Product Positioning
Designed for procurement engineers and system integrators who demand verified OEM components with full traceability. The 5SN7G10A delivers consistent trip characteristics, compact form factor, and seamless integration into SIEMENS SENTRON distribution boards — making it the preferred choice for mission-critical industrial and commercial electrical installations.
Complete Technical Specifications
| Part Number / SKU | 5SN7G10A |
| Manufacturer | SIEMENS AG |
| Series / Platform | SENTRON |
| Device Type | Molded Case Circuit Breaker (MCCB) |
| Number of Poles | 3-Pole |
| Rated Current (In) | 10 A |
| Trip Characteristic | G (General Purpose / Inverse Time) |
| Rated Voltage (Ue) | 400/415 V AC (50/60 Hz) |
| Rated Insulation Voltage (Ui) | 500 V |
| Rated Impulse Withstand Voltage (Uimp) | 6 kV |
| Short-Circuit Breaking Capacity (Icu) | Per IEC 60947-2 |
| Protection Standard | IEC/EN 60947-2 |
| Mounting Type | Fixed / Panel Mount |
| Country of Origin | Germany (DE) |
| Product Weight | 4,460 g |
| HS Code | 8536.20 (Circuit Breakers for voltage ≤ 1,000 V) |
Proven Application Environments
- Industrial Power Distribution: Main and branch circuit protection in LV switchgear panels and distribution boards
- Motor Control Centers (MCC): Feeder and motor branch circuit protection for drives and starters
- Building Automation & HVAC: Protection of HVAC control panels, BMS panels, and electrical sub-distribution
- Machine Tool & OEM Equipment: Integrated into control cabinets for CNC machines, presses, and automated lines
- Renewable Energy & Utilities: DC/AC protection in solar inverter combiner boxes and utility substations
- Process Industries: Oil & gas, chemical, and water treatment plant electrical protection
Engineering Advantages
- Precise Trip Curve G: Inverse-time thermal-magnetic trip for reliable discrimination in cascaded protection schemes
- SENTRON Ecosystem Compatibility: Direct integration with SIEMENS SENTRON busbar systems, accessories, and communication modules
- Compact 3-Pole Design: Space-efficient footprint reduces panel real estate without compromising protection performance
- IEC/EN 60947-2 Certified: Full compliance ensures acceptance in CE-marked equipment and global export projects
- German Manufacturing Quality: Produced under SIEMENS AG’s ISO 9001 quality management system for consistent performance
- Long Service Life: High mechanical and electrical endurance ratings reduce maintenance intervals and lifecycle costs
System Architecture & Signal Flow
The 5SN7G10A operates within a hierarchical protection architecture:
- Upstream: Coordinates with main MCCB or ACB at the main distribution board (MDB) for selective tripping
- Device Level: Thermal-magnetic trip unit monitors current continuously — thermal element responds to sustained overloads; magnetic element provides instantaneous short-circuit interruption
- Downstream: Protects branch circuits, motor feeders, or sub-distribution boards; coordinates with MCBs and fuses at load level
- Accessories: Compatible with SIEMENS auxiliary contacts, shunt trips, under-voltage releases, and rotary handles for remote operation and monitoring
Sourcing & Quality Verification
- OEM Authenticity: All units sourced directly from SIEMENS AG authorized distribution channels or verified surplus with full traceability documentation
- Inspection Protocol: Each unit undergoes visual inspection, label verification, and functional continuity check prior to shipment
- Documentation Available: CE Declaration of Conformity, SIEMENS product datasheet, and test reports available upon request
- Counterfeit Prevention: Holographic labels, serial number verification, and SIEMENS product authentication tools applied to every order
- Packaging: Ships in original SIEMENS OEM packaging or ESD-safe anti-static packaging for surplus units
Procurement Process
- Submit RFQ: Contact support@konmask.com or call +0086 19859288691 with your required quantity and delivery timeline
- Quotation: Receive a formal quotation with unit price, lead time, and shipping options within 24 business hours
- Order Confirmation: Place order via our secure Shopify checkout or via purchase order (PO) for approved accounts
- Quality Inspection: Pre-shipment inspection report issued; photos and serial numbers provided upon request
- Shipping & Tracking: DHL / FedEx / UPS express worldwide; tracking number provided within 24 hours of dispatch
- After-Sales Support: 12-month warranty on OEM units; technical support available via email and phone
Technical FAQ
Q: What is the trip curve “G” on the 5SN7G10A?
A: Trip curve G (General Purpose) is an inverse-time thermal-magnetic characteristic per IEC 60947-2, suitable for general industrial load protection where moderate inrush currents are present.
Q: Is the 5SN7G10A compatible with SIEMENS SENTRON busbar systems?
A: Yes. The 5SN7G10A is designed for direct mounting on SIEMENS SENTRON distribution boards and is compatible with the full range of SENTRON accessories including auxiliary contacts and shunt trips.
Q: Can this breaker be used for motor protection?
A: The 5SN7G10A provides branch circuit protection suitable for motor feeders. For dedicated motor protection with adjustable overload settings, consider pairing with a SIEMENS 3RV motor protection circuit breaker.
Q: What certifications does the 5SN7G10A carry?
A: The unit is certified to IEC/EN 60947-2 and carries CE marking, making it suitable for use in CE-marked equipment and export to IEC-standard markets globally.
Q: Do you provide documentation for customs and import compliance?
A: Yes. We provide commercial invoice, packing list, CE Declaration of Conformity, and SIEMENS product datasheet. HS Code 8536.20 applies for customs classification.
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