ebmpapst RadiCal EC Centrifugal Fan VBH0355STRHS VBH0355CTRLS 355mm Plug Fan

Product Brief Both VBH0355STRHS and VBH0355CTRLS belong to ebmpapst RadiCal 355mm single-inlet backward curved EC centrifugal plug fan series. Click on email or WhatsApp. Online customer service. Core Universal Advantage 100% identical mechanical outline, outer flange, mounting bracket and drilling hole layout; interchangeable without cabinet modification. Same product drawing, render and airflow curve can be shared to cut graphic cost. Two models share AHU, cleanroom and data center cooling application scenarios, only differ in internal control logic. 1. Full Parameter Comparison Table Parameter Item VBH0355STRHS VBH0355CTRLS Full Series RadiCal 355mm EC Centrifugal Plug Fan RadiCal 355mm EC Centrifugal Plug Fan Item Code 8300101197 8300100087 Impeller Diameter 355 mm 355 mm Impeller Spec 6 pcs backward curved PP blades, clockwise rotation 6 pcs backward curved PP blades, clockwise rotation Overall Dimension Fully universal, same square mounting frame (372/450/500mm) Fully universal, same square mounting frame (372/450/500mm) Complete Mount Bracket Integrated galvanized steel support + black coated bracket Integrated galvanized steel support + black coated bracket Inlet Nozzle Galvanized steel inlet ring with pressure tap (k-factor=160) Galvanized steel inlet ring with pressure tap (k-factor=160) Matching Motor E11228-40 3-phase GreenTech EC motor E11228-40 3-phase GreenTech EC motor (Custom CTRL control version) Power Supply 3~ 380–480 VAC, 50/60 Hz 3~ 380–480 VAC, 50/60 Hz Rated Max Speed 2750 rpm 2750 rpm Rated Input Power 1500 W 1500 W Rated Input Current 2.3 A 2.3 A Optimum Airflow @ Peak Efficiency 4285 m³/h 4285 m³/h Optimum Static Pressure 826 Pa 826 Pa Overall Static Efficiency 70.4 % 70.4 % ErP Efficiency Grade N 79.1 (Far above EU 2015 min N=62) 79.1 (Far above EU 2015 min N=62) Net Weight 24.3 kg 24.3 kg Operating Temp Range -40 ℃ ~ +40 ℃ (intermittent startup below -25℃ allowed) -40 ℃ ~ +40 ℃ (intermittent startup below -25℃ allowed) Storage Temp -40 ℃ ~ +80 ℃ -40 ℃ ~ +80 ℃ Max Working Altitude Up to 4000 m above sea level Up to 4000 m above sea level Bearing Type Precision ball bearing Precision ball bearing Operation Mode S1 24-hour continuous duty S1 24-hour continuous duty Protection Class IP55 IP55 Insulation / Env Grade Class F, H1 high humidity grade Class F, H1 high humidity grade Drain Design Condensate drain holes on rotor side Condensate drain holes on rotor side Speed Control 0–10 V / PWM dual speed control 0–10 V / PWM dual speed control, enhanced custom CTRL logic Communication RS485 MODBUS-RTU V5.1 RS485 MODBUS-RTU V5.1, extended control register Auxiliary Power Output Fixed 10 VDC / Max 10 mA short-circuit protected Fixed 10 VDC / Max 10 mA short-circuit protected Offline Parameter Power 24 VDC external input for offline setup 24 VDC external input for offline setup Built-in PFC Passive power factor correction Passive power factor correction Status Feedback Tri-color LED + floating fault relay (COM/NC) Tri-color LED + floating fault relay (COM/NC), custom alarm logic Full Protection Reverse polarity, locked rotor, over/under voltage, phase loss, dual thermal cutout Same full electrical & thermal protection Certifications CE, UKCA, UL, CSA, EAC CE, UKCA, UL, CSA, EAC Core Difference Standard mass production general model Custom CTRL optimized control variant (same aerodynamic & mechanical performance) Installation Compatibility Fully interchangeable, shared drawing & cabinet cutout Fully interchangeable, shared drawing & cabinet cutout 2. Unified Mechanical & Structural Features Identical square mounting frame size: 372 / 450 / 500 mm, standard 4-hole fixing layout Same PP backward curved impeller with low-noise aerodynamic profile Complete pre-assembled mounting bracket, no extra accessories required Inlet nozzle with pressure measuring tap for on-site airflow calibration Rotor-side drain holes to prevent condensed water accumulation IP55 dust & waterproof + H1 humidity rating, fit humid indoor air handling environment 3. Shared Control & Communication Functions Dual speed regulation: 0–10 V analog / PWM signal adjustable MODBUS-RTU V5.1 bus communication for remote monitoring & parameter editing Fixed 10 V auxiliary power supply for external sensors/potentiometer Tri-color LED indicator: Green=Normal, Orange=Warning, Red=Fault Soft start design to eliminate power surge at startup Configurable multi-channel digital & analog I/O terminals 4. Integrated Safety Protection System Electrical protection: Anti-reverse connection, stall auto-recovery, over/under voltage & phase loss lockout Dual thermal protection for motor stator and drive circuit Touch leakage current ≤ 3.5 mA, comply with IEC 60990 safety standard EMC certification: EN 61000-6-2 (industrial anti-interference) & EN 61000-6-3 (emission limit) 5. Global Certifications & Energy Standard Compliance standard: EN 61800-5-1 Certificates: CE, UKCA, UL, CSA, EAC Fully meet EU 327/2011 ErP Ecodesign energy efficiency regulation 6. Key Product Advantages Ultra-high static efficiency up to 70.4%, drastically cut long-term electricity consumption 100% interchangeable two variants, one page for dual SKUs to simplify website management Low-noise optimized backward curved impeller, stable operation under medium static resistance Complete digital bus control, seamless docking with BMS / data center monitoring system Pre-installed bracket & pressure tap, fast on-site installation and airflow calibration IP55+H1 wide environmental adaptability, stable in humid AHU and cooling equipment 7. Universal Application Scenarios Commercial air handling units (AHU), data center precision cooling, heat recovery ventilation, heat pump units, cleanroom filtration equipment, cabinet heat dissipation, medium-resistance factory air circulation systems Fast Global Lead Time Worldwide Door-to-Door Shipping Cross-Brand Equivalent Replacement Supply Pre-Production Sample Validation Full Performance Testing & Warranty Support Mass In-Stock Inventory ISO Standard Quality Assurance Custom Technical Modification Cost-Optimized Industrial Cooling Modules Product Technical Introduction We specialize in supplying a full range of industrial and commercial cooling fans, including Axial fans, Centrifugal fans, Tangential blowers, Blowers, Air condition fans, Data center fans, and ICT fans. These fans are widely used in HVAC systems, air conditioning units, data centers, industrial automation equipment, telecom base stations, and power cabinets. 3 Tiered Sourcing Solutions for Differentiated Engineering Budgets 100% New Original OEM Units: Authentic genuine brand blowers with complete factory datasheets, original EC drive modules, full parameter consistency, and official brand performance warranties, suitable for high-reliability long-cycle industrial projects. High-Performance Compatible Equivalent Fans: Professionally engineered cross-brand replacement blowers with fully matched outline dimensions, static pressure, air volume, operating voltage, rotational speed, and noise indicators. Significantly lower procurement cost while maintaining equivalent operational stability for mass standardized equipment. Tested Refurbished / Second-Hand Units: Disassembled deep cleaning, bearing replacement, circuit board inspection, and full bench performance calibration. Cost-efficient solution for budget-sensitive maintenance & retrofit projects without sacrificing continuous operating stability. Core Technical Advantages for Industrial Engineering Projects ✅ Full Technical Category Coverage Complete cooling portfolio ranging from miniature DC compact fans to heavy-duty industrial axial & centrifugal blowers, covering all mainstream airflow pressure and size specifications for cabinet thermal dissipation. ✅ Harsh Climate Adaptation for African Markets All cooling units pass high-temperature continuous operation & dust resistance aging tests, optimized for tropical high-heat, high-dust outdoor industrial & telecom site operating conditions. ✅ Customized Technical Modification Support Customizable frame size, input voltage (AC110/230V / DC24/48V), speed regulation modules, IP waterproof casing, and wiring harness configurations per customer engineering drawings. ✅ Strict Full-Link Performance Calibration Every blower undergoes independent bench testing for air volume, static pressure, operational noise, EC drive efficiency, long-hour continuous stability before warehouse delivery; test reports available upon request. ✅ Standardized Global After-Sales Technical Support 12-month comprehensive warranty for all supplied units. Free technical troubleshooting, replacement & exchange services for quality defects under rated normal operating conditions. About Skyward Telecom Founded in 2009, Skyward Telecom (Skywardtel) is a professional industrial thermal management supplier rooted in Guangdong, China. We adhere to integrity-driven technical service as our core operation principle, dedicated to resolving procurement difficulties for equipment engineers and manufacturing enterprises seeking stable, cost-effective telecom & industrial cooling ventilation hardware. For over 15 years, we have delivered standardized customized cooling solutions to engineering clients across more than 80 global countries, accumulating industry-wide recognition for our professional technical matching capability and end-to-end supply chain service. Technical FAQ 1. Who is Skyward Telecom? We are a China-based industrial cooling fan technical supplier established in 2009, focusing on full-series EC/AC ventilation equipment global supply. Our core market distribution breakdown: • Africa Market: 50.00% (primary target for tropical harsh-condition telecom & industrial cooling) • European Market: 15.00% • Middle East Market: 10.00% • Southeast Asia Market: 5.00% • North & South American Market: 20.00% Our internal team consists of 80–100 staff, including dedicated thermal engineering technicians providing exclusive technical matching support for emerging tropical markets. 2. How do we guarantee fan technical performance & quality consistency? Pre-production prototype sample testing & parameter confirmation available prior to mass order bulk manufacturing; 100% bench testing of airflow, static pressure, noise level, EC drive efficiency and long-run stability before shipment; Deep cleaning, circuit inspection and mechanical calibration for all original, compatible and refurbished fan units; Only units passing multi-index QC calibration will be labeled, packed and arranged for global logistics delivery. 3. Full Range of Industrial Cooling Equipment We Supply We provide full thermal dissipation hardware solutions covering all mainstream industrial ventilation types: Axial Fans: Miniature DC compact cooling fans & large industrial AxiForce axial blowers (200/250/300mm frame size) Centrifugal Fans: EC/AC forward & backward curved centrifugal blowers for HVAC & heavy industrial equipment Tangential Cross-Flow Blowers: Dedicated cross-flow fans for commercial air conditioning & ventilation systems High-Pressure Industrial Blowers: Boost blowers for heating boilers, industrial drying & ventilation equipment Air Condition Special Fans: Custom blowers for commercial & industrial integrated air conditioning units Data Center Cooling Fans: High-efficiency low-energy fans for server racks, cabinet thermal management systems ICT Telecom Fans: Specialized cooling blowers for outdoor base stations, network switches & communication power cabinets New original, performance-matched compatible equivalents and fully calibrated refurbished units are available for nearly all mainstream fan brands & model specifications. 4. Why choose our cooling fans over competing suppliers? One-stop full technical portfolio: All mainstream industrial cooling fan types are stocked, eliminating the need for multi-supplier sourcing for your thermal projects; 3-tier flexible cost matching: New original / compatible replacement / refurbished tested options to align with your project quality standards and procurement budget; Tropical environment optimized solutions: All blowers pass aging tests to adapt to high-temperature, heavy-dust operating environments widely seen across African industrial & telecom sites; Verified global service track record: 15+ years serving clients in over 80 countries with mature technical matching, stable delivery and transparent procurement procedures. 5. Comprehensive Global Trade & Technical Support Services Accepted Incoterms: FOB, CFR, CIF, EXW, FAS, FCA, DDP Settlement Currencies: USD, EUR, HKD, GBP, CNY Payment Methods: T/T, L/C, D/P, D/A, MoneyGram, Credit Card, PayPal, Cash Multilingual Technical Support Team: English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, Italian Send us your target fan model number, equipment application parameters, and brand requirements, our thermal engineering team will provide a fully customized technical quotation with matching datasheet support.