Precision Power Supplies Specified for Swiss OEM & Panel Builders
Built with anodized metal enclosures for optimal thermal dissipation, electromagnetic compatibility (EMC EN 55032 Class B), and rigorous 100% full-load aging.
- Continuous Voltage & Current Adjustment
- High-Current Aging & Electroplating Ready
- Low Ripple, High Efficiency Cooling Chassis
- Universal AC Input (12V 10A / 24V 5A / 48V)
- TS-35/7.5 or TS-35/15 Rail Installation
- Short-Circuit / Overload / Over-Voltage Protections
- 1U Low Profile 30mm for Compact Machines
- Withstand 300VAC Surge Input for 5 Sec
- High Operational Temperature up to 70°C
- Micro-Adjustment Voltage/Current Precision
- Built-in Speed-Controlled Cooling Fan
- Ideal for Fiber Optics, Laser Diodes & R&D
- Heavy Industrial Noise Immunity (EN 61000-6-2)
- Slim Profile Saving Switchboard DIN Real Estate
- 100% Full Load Burn-in Tested at Factory
- High Amperage Regulated Constant Current/Voltage
- Anodized & Passivated Chassis against Chemical Vapors
- Over-Temperature Thermal Shutdown Mechanism
- Active Power Factor Correction (PF > 0.95)
- Fully Compliant with EN 61000-3-2 Harmonic Directives
- Compact Cold-Rolled Metal Chassis for TS-35
- Clean 24V DC Ripple < 50mVp-p for Sensitive I/O Modules
- DC OK Relay Contact for Remote PLC Telemetry
- High Efficiency 88.5% with Natural Convection Cooling
Engineering Metal Case Power Supplies for the Swiss Industrial Ecosystem
In the global precision landscape, Swiss manufacturing represents the pinnacle of tolerance, zero-defect philosophies, and long-term durability. Yueqing Keldan Technology Co., Ltd. supplies high-spec metal case power supplies tailored directly to Swiss engineering requirements.
High Thermal Integrity & Strict Containment
The Swiss industrial equipment market—spanning machine tools, watchmaking assembly lines, laboratory automation, and rail infrastructure—operates under stringent operating environments. When power conversion occurs inside tightly sealed IP54 or IP65 stainless steel cabinets common in Swiss cleanrooms and workshops, heat dissipation cannot rely on loud, vulnerable internal fans.
Our enclosed perforated metal and extruded aluminum chassis serve a dual critical purpose: conducting heat away from sensitive power MOSFETs and electrolytic capacitors via passive convection, and creating an electromagnetic Faraday shield. This design guarantees low ripple, excellent conducted and radiated emission suppression (EN 55032 Class B), and protection against mechanical shock and vibration (IEC 60068-2-6).
Key Standards Alignment for Swiss Importation
Every metal-enclosed power supply exported to Switzerland is built to conform with Swiss and harmonized European frameworks:
- SR 734.26 (NEV): Swiss Ordinance on Low-Voltage Electrical Equipment
- IEC / EN 62368-1: Audio/Video, Information and Communication Technology Safety
- IEC / EN 61010-1: Safety Requirements for Electrical Measurement and Control Equipment
- EN 61000-3-2 Class A/D: Harmonic Current Emission Limits (Active PFC)
- RoHS & REACH: Complete SVHC declaration conformity for Swiss environmental laws
Where Our Metal Enclosed Power Supplies Excel Across Cantons
Swiss engineers demand power supplies with unwavering mean time between failures (MTBF), low acoustic noise, and rock-solid transient response.
Precision CNC & EDM Tooling
In the Jura Arc (Neuchâtel, Jura, Bernese Jura), high-speed multi-axis CNC machines and wire Electrical Discharge Machining (EDM) systems require ripple-free DC power. Our LRS-150-24 and S-350-24 enclosed power supplies prevent electrical noise from disturbing sub-micron linear encoders and high-frequency servo drives.
Watch Valley & MicrotechnologyPharmaceutical & Biotech Cleanrooms
Basel's pharmaceutical cluster relies on automated liquid handlers, bio-reactors, and spectrometry. Our metal case DIN-rail power units (EDR-120 and EDR-240) fit into stainless steel control enclosures, offering galvanic isolation up to 3000VAC, preventing ground loops, and resisting harsh decontamination washes.
Basel-Stadt / Basel-LandschaftAlpine Railway & Tunnel Telemetry
Railways (SBB/CFF/FFS, RhB) and mountain tunnel monitoring networks operate under extreme thermal fluctuations (-20°C to +70°C) and heavy electromagnetic transients from overhead catenary wires. With high dielectric withstand ratings and TS35 vibration-proof latches, our DIN rail units power signaling nodes and PLC telemetry reliably.
Graubünden, Uri & ValaisHydropower & Smart Grid SCADA
Switzerland's pumped-storage hydropower stations and distributed municipal utilities require resilient auxiliary 24V DC backbones. Our active PFC units eliminate unwanted reactive currents, enabling seamless interfacing with battery-backed UPS circuits and Modbus/PROFINET industrial communications.
Ticino & Central SwitzerlandLaser Cutting & Additive Manufacturing
High-power industrial fiber laser cutting heads and metal 3D printers in Zurich and Aargau machinery plants demand robust, peak-load sustaining DC power. Our 1000W and 3000W adjustable high-power converters deliver stable current regulation without sagging during laser pulse excitation.
Zurich & Aargau High-Tech BeltUniversity R&D & Particle Physics
Research facilities (EPFL, ETH Zurich, CERN partner labs) require flexible, highly stabilized variable laboratory sources. The 3000W benchtop variable source provides analog and remote-controlled CC/CV modes, ensuring clean test currents for cryogenic cooling test benches and electromagnet coils.
Vaud, Geneva & ZurichEmerging Technical Procurement Trends in Switzerland
Swiss technical buyers are transitioning away from unbranded generic suppliers in favor of transparent, auditable manufacturers that support the Swiss Energy Strategy 2050.
1. Active PFC & Grid Harmonic Limits
Swiss grid operators (such as Swissgrid and cantonal cantonal distribution networks like BKW, EKZ) maintain strict network harmonics compliance. Power supplies drawing more than 75W must feature Active Power Factor Correction (PF > 0.95), preventing harmonic pollution (EN 61000-3-2) in densely equipped smart factories.
2. Eco-Design & Low No-Load Standby
Conforming with the Swiss Energy Efficiency Ordinance (EnEV), Swiss OEMs prioritize units with no-load power consumption below 0.3W–0.5W and operating efficiencies exceeding 90–93%. Minimizing thermal waste directly reduces cabinet climate control energy bills.
3. Space Conservation on TS-35 Rails
Real estate inside Swiss control cabinets is at a premium. The shift toward ultra-slim (32mm–40mm width for 120W; 63mm for 240W) DIN rail metal modules allows electrical engineers to fit additional safety relays, contactors, and IoT gateways onto the same standard 35mm mounting rail.
Engineering Comparison: Metal Case Power Architecture
Evaluate form-factor parameters to determine the correct topology for your machinery enclosures.
| Architecture Type | Typical Power | Cooling Mode | EMC Shielding | Swiss Industry Application Fit | Mounting Method |
|---|---|---|---|---|---|
| Slim DIN Rail (EDR/NDR Series) | 75W – 480W | Free Air Convection | ✔ High (EN 55032 B) | PLC cabinets, smart building automation, rail trackside | Snap-on TS-35/7.5 or TS-35/15 |
| Low-Profile Enclosed (LRS Series) | 35W – 350W | Passive Perforated Case | ✔ Medium-High | Internal machinery, 3D printing, laser marking, CCTV hubs | Chassis screw mounting (1U height) |
| Heavy Enclosed Switching (S Series) | 250W – 600W | Internal Fan / Passive | ✔ High | High-load stepper motors, CNC routers, industrial heaters | Flange / baseplate direct mount |
| High-Power Variable Benchtop | 1000W – 3000W | Intelligent Forced Air | ✔ Laboratory Grade | R&D prototypes, electroplating, anodizing, battery testing | Desktop / 19-inch rack compatible |
Yueqing Keldan Technology Co., Ltd. Advantage
Located in Yueqing, Zhejiang—China’s low-voltage electrical capital—we bring over 18 years of specialized SMPS engineering, verified onsite by TÜV Rheinland for total peace of mind.
IQC Component Inspection
Rigorous screening of Japanese and Taiwanese capacitors (Rubycon, Nichicon), custom transformers, and STMicroelectronics MOSFETs.
Automated SMT Placement
High-speed surface-mount technology ensures micro-placement accuracy of miniature passive components and control ICs.
Reflow Soldering Precision
Multi-zone temperature profiling prevents thermal shock and guarantees void-free, crack-resistant solder joints.
AOI Machine Vision
Automated Optical Inspection scans 100% of boards for solder bridging, tombstoning, missing parts, and polarity misalignment.
Chassis Assembly & Potting
Anti-vibration thermal adhesive potting and precision fitting into corrosion-resistant metal and aluminum enclosures.
Calibration & Debugging
Fine-tuning output voltage pots, verifying current limiting thresholds, and verifying ripple/noise with high-bandwidth oscilloscopes.
100% Full-Load Burn-In
Dedicated high-temperature aging chambers stress every unit under 100% load for 4 to 8 hours to eliminate infant mortality.
Hi-Pot & Final OQC
Withstand 3000VAC primary-to-secondary isolation testing, ground continuity checks, and Swiss-ready export packaging.
Swiss Technical & Commercial FAQ
Clear, direct answers addressing import compliance, custom modifications, logistics, and quality assurance.
Q: Do your metal case power supplies comply with Swiss NEV (SR 734.26) and ESTI guidelines?
Yes. The Swiss Ordinance on Electrical Low-Voltage Equipment (NEV / SR 734.26) aligns directly with the European Union Low Voltage Directive (2014/35/EU) and Electromagnetic Compatibility Directive (2014/30/EU). Our products carry full CE conformity documentation, meeting EN 62368-1, EN 61010-1, and EN 55032 Class B standards, satisfying Swiss Federal Heavy Current Inspectorate (ESTI) requirements.
Q: How do your units perform in unventilated IP65 sealed machine tool cabinets?
Our metal enclosed power supplies are engineered with high-conductivity cold-rolled steel and aluminum heatsinks. With conversion efficiencies ranging between 89% and 94%, internal thermal losses are kept to a minimum. Standard models operate up to 50°C at full load with natural convection and provide smooth thermal derating up to 70°C without catastrophic shutdown.
Q: Can Yueqing Keldan provide custom DC output voltages or conformal coating?
Yes. Backed by our in-house engineering team with 5+ years of SMPS experience, we support OEM/ODM requests. This includes non-standard voltages (e.g., 36V, 60V, 72V DC), conformal silicone or polyurethane coating for moisture and condensation protection in alpine conditions, and private branding/laser-engraved labeling.
Q: What documentation is provided for Swiss customs and quality auditing?
Every export shipment includes comprehensive commercial invoices with exact HS tariff codes (typically 8504.40), detailed packing lists, CE Declarations of Conformity, full RoHS/REACH compliance documentation, and factory test/burn-in reports. Onsite factory verification reports from TÜV Rheinland can also be provided upon request.
Q: What is the standard sample lead time for evaluation by Swiss R&D teams?
Standard catalog items such as the EDR-120, LEYU-LRS-150-24, and 240W DIN-rail units are stocked in sample quantities and dispatched within 24 to 72 hours via DHL/FedEx Express to Zurich, Geneva, or Basel (typically 3 to 5 business days transit). Custom prototype modifications generally require 7 to 14 days.
Q: What is your Minimum Order Quantity (MOQ) for Swiss B2B buyers?
We offer flexible sampling starting at 1 piece for standard industrial DIN rail and enclosed metal models, allowing engineering evaluation on machine prototypes. For standard volume production, flexible carton-level quantities apply, while custom OEM housing or transformer projects are quoted based on specific production batches.
