Standard & Ultra-Slim Power Modules Ready for Dispatch to Zagreb
Pre-tested against severe grid volatility, inductive back-EMF, and continental temperature shifts. Select standard catalog configurations or request custom OEM builds engineered in our Yueqing production base.
LDV-100 100W IP67 Waterproof LED Power Supply 12V 8.3A 24V 4.2A AC DC Switching Adapter for Outdoor Lighting
MDR-20 20W DIN Rail Switching Power Supply 12V 1.67A 24V 1A AC DC Single Output for Industrial Automation
100W IP67 Waterproof LED Driver 12V 24V Constant Voltage Power Supply for Outdoor Billboards Signage & LED Strip Lights
HDR-100 100W DIN Rail Power Supply 85-264VAC Universal Input 12V 24V 48V Industrial Switching Power Supply
240W Industrial DIN Rail Power Supply with Active PFC 24V 10A 48V 5A AC DC Converter for PLC Control Cabinet
Electrical Architecture & Topologies for Continental European Grids
Industrial machinery deployed across Zagreb and broader Croatia encounters harsh transients from legacy inductive machinery, grid switching events, and fluctuating line loads. Our power supplies integrate multi-stage filtering and active harmonic compensation to maintain continuous, fault-tolerant DC rails.
Active PFC (PF > 0.98)
Conforms directly to EN 61000-3-2 Class A harmonic standards. Eliminates line distortion on shared shop-floor transformers, minimizing thermal stress on upstream circuit breakers.
EN 61000-3-2 ComplianceTransient & Inrush Mitigation
Thermistor-based soft-start circuits and metal-oxide varistors (MOV) clamp line surges up to 4kV (IEC 61000-4-5), preventing nuisance tripping during heavy motor starts.
Surge Level 4 (4kV)105°C Japanese Capacitors
Utilizing high-end electrolytic capacitors rated for over 50,000 hours at 105°C guarantees long MTBF (>350,000 hours Mil-Hdbk-217F) even within enclosed non-ventilated enclosures.
Long MTBF LifecycleFull Interlock Protections
Self-recovering short-circuit protection (Hiccup mode / Constant Current limit), latching overvoltage (OVP), and thermal shutdown protect PLCs and human machine interfaces (HMIs).
Hiccup & Foldback Modes| Series Family | Wattage Band | Input Voltage Window | Efficiency | PFC Stage | Chassis Type | Typical Zagreb Project Application |
|---|---|---|---|---|---|---|
| MDR Series | 20W – 100W | 85 – 264 VAC Universal | 84% – 88% | Passive / Standard | Slim Thermoplastic (TS-35) | Distributed remote telemetry, SCADA sensors, relay logic |
| HDR Series | 15W – 150W | 85 – 264 VAC Universal | 87% – 91% | Low-loss Topology | Step-profile Breaker-box Format | Smart commercial building sub-panels, lighting automation |
| NDR Series | 75W – 480W | 90 – 264 VAC Universal | 89% – 93% | Active PFC (PF > 0.98) | Perforated Metal (TS-35/7.5 & 15) | CNC milling, robotic cells, heavy PLC control panels |
| DRP Series | 240W – 480W | 180 – 264 VAC / Auto-select | 90% – 94% | Active PFC (Heavy EMC) | Heavy Gauge Aluminum Casing | Substation auxiliary DC, tramway depot battery float arrays |
| LDV / Waterproof | 60W – 320W | 90 – 264 VAC Universal | 90% – 92% | Class C LED Harmonics | IP67 Extruded Sealed Aluminum | Outdoor logistical perimeters, hazardous wet washdown zones |
Precision Applications across Zagreb's Industrial & Infrastructure Belts
From the industrial corridors of Jankomir and Žitnjak to advanced technological hubs in Sveta Nedelja and Samobor, Yueqing Keldan power modules supply the clean, noise-free direct current that modern Croatian industry demands.
Jankomir Industrial Automation
Machine builders in Jankomir require space-efficient DIN rail modules with ultra-slim footprints (NDR and HDR series). Our power supplies resist line sags caused by high-power induction motors and injection molding machinery, maintaining stable 24VDC logic power to Siemens S7-1500 and Beckhoff automation controllers.
Factory Floor CNC & ConveyorsRailway & Tramway Subsystems (ZET)
Zagreb’s municipal tram transit system (ZET) and national rail corridors (HŽ) demand power converters capable of handling substantial mechanical vibration and wide input tolerances. Our ruggedized DIN-rail supplies are deployed in trackside signaling cabinets, passenger information displays, and depot test equipment.
EN 50121-4 Vibration & EMCPharmaceutical & Washdown Systems
In Žitnjak and Savski Marof, pharmaceutical manufacturing and food processing plants enforce stringent sanitary protocols. Keldan IP67-rated constant voltage units and corrosion-resistant enclosed power modules run 24/7 without fan cooling, eliminating airborne dust contamination in cleanroom environments.
Sterile Cleanroom ProcessingEV Fast Charging & Sveta Nedelja Tech Hub
Zagreb’s thriving electric mobility and battery research sector demands ultra-reliable auxiliary 12V and 24V bus supplies inside DC fast chargers (EVSE). Our active PFC converters supply uninterrupted auxiliary power to contactor controllers, RFID card readers, and OCPP communications hardware.
High-Power EVSE SubsystemsYears of SMPS Design Excellence
Full-Load High-Temp Burn-In Tested
Active Power Factor Rating
TÜV Verified Onsite Production Staff
Macro Dynamics Driving Power Architecture in Croatia
Croatian engineering teams are navigating accelerated modernization under the European Green Deal, Industry 4.0 digitization, and the integration of renewable energy into the national grid (HEP ODS). Power supplies must evolve beyond simple transformer units into high-efficiency active switching nodes.
Grid Modernization & Solar Influx
Croatia’s massive deployment of distributed solar photovoltaics introduces high-frequency voltage fluctuations into localized grids. Switch-mode supplies with 85-264V extra-wide tolerance shield sensitive PLCs from grid swell and sag phenomena.
Dynamic Line RegulationDecarbonization & ErP Directives
Zagreb facility managers are under strict corporate mandates to curb parasitic standby energy. Our HDR and NDR models achieve standby idle losses <0.3W and peak operational efficiencies exceeding 93%, directly supporting regional ISO 50001 energy audits.
Eco-Design Standby <0.3WPanel Compactness & Thermal Shedding
Modern electrical enclosures in Zagreb high-rises and automated factories have shrunk in volume by over 30%. Slimline DIN supplies dissipating heat via natural air convection eliminate noisy, failure-prone panel cooling fans.
Fanless Natural ConvectionSupply Chain Diversification
European distributors and panel builders are actively mitigating long lead-times from legacy legacy component brands. Partnering directly with Yueqing Keldan provides transparent factory-floor visibility, stable inventory pricing, and agile custom OEM labeling.
Direct B2B Factory AgilityYueqing Keldan Technology — Audited Excellence in Power Conversion
Headquartered in Yueqing, Wenzhou—China's global capital for low-voltage electrical apparatus—we combine 18+ years of switching topology expertise with modern surface-mount automation and rigorous end-of-line verification.
Precision SMT Placement
High-speed surface-mount placement systems ensure accurate component orientation, miniature footprints, and uniform solder paste thickness.
Controlled Reflow Soldering
Multi-zone temperature profiling prevents thermal shock to sensitive ICs, eliminating cold solder joints and microscopic void formations.
Automated Optical Inspection (AOI)
Every populated PCB undergoes 100% automated optical inspection to detect solder bridging, misaligned passives, or reversed polarities.
100% Full-Load Burn-In
Units undergo continuous full-load aging under elevated ambient chamber temperatures to trigger and eliminate infant mortality failures before shipment.
TÜV Rheinland Audited Facility
Our production premises, testing infrastructure, and quality control systems are verified onsite by TÜV Rheinland. Procurement teams receive genuine third-party audit reports covering supplier credit, machinery assets, and export documentation capabilities.
Onsite Verified ManufacturerEngineering-Led OEM / ODM Support
Our staff of 5+ dedicated power electronics engineers brings over 5 years of individual SMPS design expertise. We customize output voltage rails (e.g., 36V, 48V, dual isolated channels), terminal configurations, private labeling, and custom chassis metalwork based on your electrical drawings.
Bespoke Panel IntegrationSeamless Freight to Port of Rijeka
Direct ocean logistics from Ningbo/Shanghai to the Port of Rijeka (Adriatic Gateway, only 160km from Zagreb via the A6 motorway) or Port of Koper (Slovenia). We handle full export documentation, EUR.1 certificate support, and offer flexible Incoterms (FOB, CIF, DAP, DDP).
Fast Adriatic Sea RouteFrequently Asked Questions by Zagreb Buyers & Integrators
Direct technical and logistical answers addressing compliance, installation, ordering thresholds, and supply chain timelines for Croatian procurement teams.
Yes. All standard switching power supplies carry full CE compliance documentation adhering directly to the Low Voltage Directive (LVD 2014/35/EU), Electromagnetic Compatibility Directive (EMC 2014/30/EU), and RoHS Directive (2011/65/EU). Detailed safety test reports (EN 62368-1 / EN 61010-2-201) are provided prior to shipment for seamless verification by Croatian customs and technical inspection agencies.
Catalog models in standard voltages (12V, 24V, 48V) are maintained in inventory for dispatch within 3–7 business days. Air express shipments (DHL, FedEx, UPS) arrive at Zagreb Airport (Franjo Tuđman - ZAG) in 4–6 business days. Full container load (FCL) and consolidated sea freight (LCL) into the Port of Rijeka require approximately 28–34 days transit time, followed by rapid overland transit to Zagreb via the A6 highway.
Absolutely. All units feature universal TS-35/7.5 and TS-35/15 mounting brackets conforming to standard EN 50022 mechanical dimensions. They effortlessly snap into industrial cabinets alongside standard contactors, circuit breakers, Siemens S7 PLCs, and Phoenix Contact terminal blocks without requiring custom adapter plates.
We offer exceptionally low evaluation thresholds: standard catalog models are available for engineering sample orders starting from 1 unit. For customized OEM laser etching, custom brand labels, or customized voltage trim bands (e.g., 28VDC or 54VDC), typical project MOQs range between 50 to 100 units depending on chassis complexity.
Zagreb experiences seasonal temperature swings from sub-zero continental freezes down to -20°C in winter up to +38°C in peak summer heat. Our industrial DIN rail series are certified for wide operating temperature windows of -20°C to +70°C. Standard cold-boot capability at -20°C ensures zero startup delays in unheated outdoor control cabinets.
Every industrial rail mount power supply carries a comprehensive factory warranty of 2 to 3 years. In the rare event of a component non-conformity, our engineering team in Yueqing conducts rapid root-cause failure analysis (8D report) and dispatches immediate air-freight replacements directly to your Zagreb facility.
Request Engineering Samples or Direct Factory Pricing for Zagreb
Whether you require standard 24V NDR modules for imminent panel builds in Jankomir or bespoke multi-channel OEM power subsystems, our application engineering team delivers rapid quotes, technical schematics, and full compliance dossiers within 24 hours.
