HVAC & Refrigeration Cooling Solution – Ziehl-abegg RH31C-ZID.DC.1R | RH Series
Where This Product Is Used
The Ziehl-abegg RH31C-ZID.DC.1R is an electronically commutated (EC) axial fan motor engineered for demanding thermal management applications across multiple industries:
- Commercial Refrigeration: Evaporator and condenser fan duty in supermarket display cases, cold rooms, and walk-in freezers where precise airflow and low noise are critical.
- HVAC Air Handling Units (AHU): Supply and return air fan sections in rooftop units, fan coil units, and precision air-conditioning systems.
- Industrial Process Cooling: Cooling towers, heat exchangers, and cabinet coolers in manufacturing plants and data centres.
- Ventilation Systems: Energy-recovery ventilators (ERV/HRV) and clean-room air-handling where variable-speed EC drives reduce energy consumption by up to 50% vs. AC motors.
- OEM Equipment Integration: Direct replacement or new-build integration into refrigeration racks, chillers, and condensing units.
Technical Specifications
- Model / SKU: RH31C-ZID.DC.1R
- Series: RH (Radial/Axial EC Fan Motor)
- Motor Technology: Brushless DC / Electronically Commutated (EC)
- Nominal Diameter: 310 mm
- Manufacturer: Ziehl-abegg SE, Germany
- Country of Origin: Germany (DE)
- Weight: 2,390 g (approx. 2.39 kg)
- Drive Type: External rotor motor with integrated electronics
- Speed Control: 0–10 V DC analogue signal / PWM compatible
- Protection Class: IP44 (standard; IP54 available on request)
- Insulation Class: F
- Ambient Temperature Range: −25 °C to +55 °C
- Compliance: CE, ErP 2015/1188/EU, RoHS
Full electrical parameters (voltage, current, power, airflow curve) are available on the official Ziehl-abegg datasheet. Contact us for the factory specification sheet.
Why Engineers Specify This Model
- High Efficiency EC Technology: Integrated EC drive eliminates the need for external VFDs; efficiency class IE5 equivalent reduces operating costs over the motor’s lifetime.
- Precise Speed Control: Smooth 0–10 V or PWM interface enables tight temperature and pressure control loops in BMS/SCADA environments.
- Compact External-Rotor Design: The motor and impeller share a single shaft, reducing installation depth and simplifying OEM integration.
- Low Acoustic Signature: Aerodynamically optimised blade geometry and vibration-damped mounting reduce noise — critical for commercial and near-residential installations.
- Long Service Life: Sealed ball bearings and brushless commutation deliver >40,000 hours MTBF under rated conditions.
- German Engineering Reliability: Manufactured to ISO 9001 standards at Ziehl-abegg’s Künzelsau facility with 100% end-of-line testing.
Complete System Bill of Materials
For a fully operational fan assembly using the RH31C-ZID.DC.1R, engineers typically specify:
- Ziehl-abegg RH31C-ZID.DC.1R EC Fan Motor (this item)
- Compatible fan blade / impeller (Ziehl-abegg FE/FK series, 310 mm pitch circle)
- Mounting ring / fan guard (galvanised steel or stainless, to suit duct diameter)
- 0–10 V DC signal source or BMS analogue output module
- 24 VDC or 230 VAC power supply (per motor nameplate)
- Vibration isolation mounts (rubber anti-vibration grommets)
- Wiring harness with IP-rated connectors
Konmask can source complementary Ziehl-abegg components. Contact us for a complete BOM quotation.
Compliance & Industry Standards
- CE Marking: Compliant with EU Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU.
- ErP Regulation: Meets EU 2015/1188 ecodesign requirements for local space heaters and fan motors.
- RoHS: Restriction of Hazardous Substances Directive 2011/65/EU compliant.
- ISO 9001:2015: Manufactured under Ziehl-abegg’s certified quality management system.
- UL / CSA: Available on select variants — confirm with Konmask for market-specific certification requirements.
Quality Assurance & Sourcing
Konmask.com specialises in industrial automation and HVAC components sourced directly from authorised distribution channels. Every Ziehl-abegg unit we supply:
- Carries original manufacturer packaging and labelling.
- Is inspected for physical integrity and label authenticity before dispatch.
- Ships with a traceable batch/serial reference for warranty and maintenance records.
- Is backed by Konmask’s 12-month supply warranty against manufacturing defects.
How to Source This Part
- Add to Cart — Place your order directly on Konmask.com for the fastest processing.
- Request a Quote — For volume orders (>5 units) or project BOM requirements, email support@konmask.com for preferential pricing.
- Lead Time: In-stock units ship within 1–3 business days. Ex-factory orders: 2–4 weeks. Expedited options available.
- Export & Cross-Border: We ship globally with full commercial invoice, packing list, and HS code documentation (HS 8414.59).
- Phone / WeChat: +0086 19859288691 — speak directly with a technical sales engineer.
Application-Specific FAQ
Q: Can the RH31C-ZID.DC.1R replace an existing AC fan motor in my refrigeration unit?
A: In most cases yes — the external-rotor form factor and standard mounting dimensions allow direct substitution. Confirm the impeller bore and blade pitch circle diameter match your existing assembly. Contact us with your current motor nameplate data for a compatibility check.
Q: What control signal does this motor accept?
A: The .DC.1R suffix indicates a 0–10 V DC analogue control input. PWM compatibility depends on firmware revision — confirm with Konmask before ordering if PWM is required.
Q: Is this motor suitable for outdoor condenser duty?
A: The standard IP44 rating is suitable for protected outdoor locations. For fully exposed outdoor condensers in high-humidity or washdown environments, specify the IP54 variant or contact us for weatherproof housing options.
Q: What is the minimum order quantity (MOQ)?
A: MOQ is 1 unit for standard orders. Volume pricing applies from 5 units. OEM project pricing available on request.
Q: Do you provide the Ziehl-abegg factory datasheet?
A: Yes. Email support@konmask.com with your model number and we will provide the official technical datasheet and dimensional drawing.
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Contact: support@konmask.com | +0086 19859288691
