Description
Used product. The ebm-papst 8312/12HL is an axial fan, 8300 series, identifiable from the nameplate as 12 V DC, 330 mA, 4.0 W, with a 6–15 V DC supply range. The photographed configuration has 3 wires, with connections indicated on the nameplate as +RD, -RK and SENSOR WH, meaning positive supply, negative supply, and a signal output for speed monitoring. The variant corresponds to the 8312/12HL-118 family, with an electronically commutated brushless motor and ball bearings.
⚙️ Technical Specifications
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Brand: ebm-papst St. Georgen
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Model: 8312/12HL
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Variant: Var.118
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Rated supply: 12 V DC
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Supply range: 6–15 V DC
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Nameplate current: 330 mA
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Power: 4.0 W
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Dimensions: 80 × 80 × 32 mm
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Rated speed: approx. 4,200 rpm
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Airflow: approx. 67 m³/h
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Noise level: approx. 43 dB(A)
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Bearings: ball bearing
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Connection: 3 wires
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Signal: SENSOR/TACHO output, compatible with speed monitoring
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Ambient temperature: approx. −20…+75 °C
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Weight: approx. 170 g
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Electronic protection: protection against rotor lock and reverse polarity.
⚡ Function in the System
Axial high-airflow fan designed for forced cooling of electronic equipment, control panels, power supplies, power modules, industrial systems, and equipment where it is necessary to keep component temperatures under control. The WH SENSOR wire allows rotational speed detection via a tachometric signal.
🏭 Construction & Installation
Compact 80×80×32 mm construction, frame and impeller made of reinforced technical plastic material, with an external-rotor brushless motor and ball bearings. The ventilation is axial, with airflow directed through the fan frame. The connection must respect the polarity indicated on the nameplate: RD = positive, RK = negative, WH = sensor.
🌐 Applications
Suitable for inverters, converters, power supplies, UPS systems, electronic power modules, electrical panels, industrial systems, and automation equipment. The combination of compact dimensions, approx. 67 m³/h airflow, and tachometric signal makes it suitable for systems with ventilation control.
🛡️ Safety & Product Condition
The component is used, with dust and normal signs of use visible on the blades and frame; no major damage to the fan body is evident. Operation is not declared as tested unless a specific electrical and mechanical test has been performed. Before installation, verify the 12 V DC supply, polarity, correct SENSOR signal connection, and free rotation of the impeller.
📦 Package Contents
1 × ebm-papst 8312/12HL fan, complete with the 3-wire cable and connector visible in the photographs.
🚀 Final Description
The ebm-papst 8312/12HL is a compact and robust industrial axial fan measuring 80×80×32 mm, powered by 12 V DC, with 4 W power, 4,200 rpm, approx. 67 m³/h airflow, and SENSOR output for speed monitoring. It is particularly suitable as a replacement for power electronics cooling systems and industrial equipment. The nameplate data of the photographed unit takes priority; documentation for the 8312/12HL-118 variant reports very similar nominal values of 325 mA and 3.9 W.
