Engineered for instant dual-source switching, seamlessly protecting mission-critical electronics in French infrastructure against phase drops, micro-outages, and grid voltage sags.
In modern industrial and enterprise power distributions across France, power continuity is no longer optional. As French data centers (located around Paris FLAP regions and Marseille subsea cable landings) expand alongside high-tech automated manufacturing in Lyon and Toulouse, electrical reliability demands sub-cycle transfer mechanisms. Traditional Electromechanical Automatic Transfer Switches (ATS) take between 30 to 100 milliseconds to switch between independent power sources. This latency leads to power interruptions that cause server reboots, PLC controller drops, and massive data loss.
A Static Transfer Switch (STS) utilizes Silicon Controlled Rectifiers (SCRs / Thyristors) arranged in inverse-parallel configurations to achieve zero-motion, solid-state switching between two independent AC power feeds. By executing power transfers in under 3 to 5 milliseconds—well within the ITIC / CBEMA curve tolerance limits—the STS guarantees uninterrupted operation for sensitive electronic loads even during complete upstream line loss or phase desynchronization.
When operating on the French national grid (managed by RTE and Enedis), industrial sites frequently utilize primary transformer feeds combined with secondary UPS or generator backups. Our industrial STS solutions are engineered to handle both transfer dynamics:
Executed when Source A and Source B are in phase synchronization (< 15 degrees difference). The SCRs switch instantaneously at zero-current crossings, providing continuous power waveform integrity.
Occurs when source phase angles drift or during unsynchronized generator cut-ins. The intelligent controller inserts a micro-delay to suppress inrush current and protect downstream transformers from saturation.
In the event of a downstream short circuit, the STS automatically locks transfer to prevent propagating electrical faults to the alternate healthy upstream feed.
France’s industrial landscape demands adherence to rigorous European norms (EN 50155, NF C standards, IEC 60947-6-1). As a premier manufacturer and exporter serving the French market, our Static Transfer Switch range is specifically tailored for key localized sectors:
Hosting high-density AI clusters and enterprise cloud computing. Our 100A to 600KVA rack-mount and cabinet-standing STS units provide 2N/N+1 dual-input distribution directly into server cabinets, eliminating single points of failure in PDU lines.
Electrified rail networks across France require uninterrupted signaling, track control, and communication nodes. Our ruggedized single and three-phase static switches comply with EN 50155 and EN 61373 for shock, vibration, and continuous thermal performance.
With nuclear power supplying over 60% of France’s electricity alongside rapid renewable integration, substations require ultra-reliable medium-voltage vacuum breaker spare parts and 110V/220V DC/AC static switches for control room telemetry continuity.
In aerospace manufacturing hubs around Toulouse, micro-interruptions in CNC machinery or semiconductor etching lines lead to costly scrap. Our fast 5ms changeover wallmount cabinet switches ensure continuous robot operation.
French public hospitals (Centres Hospitaliers Universitaires) enforce stringent power supply backup rules (NF C 15-210). STS units serve as critical link switches between medical isolation transformers, dual UPS feeds, and emergency surgical theatre equipment.
With regional edge computing deployment across major French cities, compact 10A to 32A rack-mount switches (such as Eaton & Vertiv compatible architectures) offer remote RS485 / Modbus monitoring for unattended operation.
The demand for advanced Static Transfer Switches in France is accelerating due to a confluence of industrial modernization initiatives, stringent European environmental mandates, and grid-level transition dynamics:
Under the national France 2030 investment plan, over €54 billion is being deployed to rebuild domestic manufacturing capacity in microelectronics, EV battery gigafactories (such as Dunkirk’s Battery Valley), and green hydrogen production. Every modern gigafactory relies on dual-feed electrical redundancy anchored by static switching hardware to eliminate supply line micro-flutters.
Double-conversion online UPS systems incur continuous energy losses (3% to 6% heat dissipation). By implementing an Eco-Mode topology with Static Transfer Switches, data centers achieve 99% operational efficiency. Power flows directly from the main utility grid, with the STS ready to switch to the backup UPS in less than 3ms if grid quality deteriorates. This directly lowers PUE (Power Usage Effectiveness) metrics to satisfy French eco-design standards.
As power switching devices become interconnected with Building Management Systems (BMS) via Modbus RTU/TCP and SNMP, cybersecurity compliance is vital. Our static transfer switches incorporate secure, hardware-isolated communication interfaces, protecting French industrial infrastructure against unauthorized cyber-physical tampering.
For procurement managers, electrical engineers, and EPC contractors evaluating dual-source transfer technologies, the table below illustrates why static electronic switching superiorly protects sensitive loads compared to traditional rotary or electromechanical switches:
| Performance Parameter | Solid-State STS (Our Product Line) | Electromechanical ATS | Rotary Changeover Switch |
|---|---|---|---|
| Transfer Speed | < 3 ms to 5 ms (Sub-cycle) | 30 ms to 150 ms (Causes reboot) | 100 ms to >1 second (Manual/Slow) |
| Switching Technology | Solid-State SCR / Thyristors | Mechanical Contacts / Coils | Rotary Mechanical Contacts |
| Contact Wear & Arcing | Zero Wear (No moving parts) | High (Arcing damages contacts) | High (Mechanical degradation) |
| Phase Discrepancy Transfer | Advanced DSP Sync Control | Not Controlled (Inrush hazard) | Manual Intervention Required |
| Operational Life (Cycles) | Unlimited solid-state cycles | ~10,000 to 50,000 operations | ~5,000 operations |
| BMS / IoT Integration | RS485, Modbus RTU, SNMP embedded | Basic Auxiliary Contacts | Rarely Instrumentable |
| Ideal Application | Data Centers, Medical, Rail, Automation | Emergency Motor / Generator Starting | Manual Isolation Switches |
With over four decades of dedicated power electronics engineering experience, our organization combines European R&D proximity with robust manufacturing capabilities. We understand the stringent expectations of French buyers who demand reliability, technical documentation, and long-term support.
Our primary manufacturing and engineering hubs (located in Barcelona, Spain) share direct transport links with France. We offer fast shipping, zero transatlantic lead-time friction, and EU customs seamlessness.
Every standard and custom static transfer switch undergoes full thermal stress analysis, burn-in verification, and EMC testing in accordance with IEC 61000, IEC 62368, and EN 50155 standards prior to export.
From custom 19-inch rack enclosures to heavy-duty wall-mount IP54 industrial cabinets, our engineering department converts tough client requirements into certified, high-reliability products.
Our power conversion modules and static transfer systems are specified by leading global equipment builders and energy integrators:
Our solid-state SCR Static Transfer Switches deliver a transfer speed of under 3 to 5 milliseconds (sub-cycle). This is fully compliant with the ITIC (CBEMA) power curve, ensuring that sensitive servers, PLC controllers, and industrial automation equipment experience zero rebooting or downtime during input voltage sags or phase losses.
Yes. All exported STS equipment complies with CE low-voltage and EMC directives. Industrial models comply with IEC 60947-6-1 (transfer switching equipment standards), while railway and transportation units adhere strictly to EN 50155, EN 50121-3-2 (EMC), and EN 61373 for shock and vibration resistance.
Yes. Our DSP-controlled Static Transfer Switches feature intelligent phase-sensing algorithms. If the dual input feeds (e.g., Grid Mains vs. Generator Feed) are out of phase, the switch executes an asynchronous transfer with a micro-delay zero-crossing point to prevent hazardous inrush current and downstream transformer saturation.
We supply single-phase and three-phase units ranging from compact 10A / 16A / 32A rack-mount switches for IT cabinets up to heavy-duty 100A, 400A, and 600KVA standalone industrial cabinet static switch solutions with custom IP protection ratings.
Our engineering team in Barcelona provides complete custom R&D—from mechanical envelope customization and special input voltage ranges (e.g., 110V DC, 230V AC, 400V 3-phase) to custom RS485 / Modbus / SNMP telemetry integration. Custom sample programs typically run between 16 to 28 weeks from initial specification to qualified prototype.
Units are equipped with isolated RS485 interfaces supporting Modbus RTU, as well as optional Ethernet SNMP modules for direct integration into Building Management Systems (BMS), SCADA networks, and cloud telemetry platforms.