📝 Description
Used product. The photographed component is an ICAR Ecofill permanent capacitor, model WB 40120 MK, primarily intended for use as a run capacitor for single-phase electric motors. The WB 40120 designation identifies the 12 µF version of the Ecofill series; the family is manufactured using self-healing metallized polypropylene film and a plastic housing.
⚙️ Technical Specifications
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Brand: ICAR
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Series: Ecofill WB
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Model: WB 40120 MK
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Capacitance: 12 µF ±10%
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Voltage: 400 V AC / 450 V AC
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Frequency: 50 Hz indicated on the component
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Temperature: −25…+85 °C
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Technology: metallized polypropylene film
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Construction: self-healing (SH) capacitor
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Connection: 2 Faston terminals
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Mounting: threaded screw/stud on the rear side
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Visible Standards/Approvals: CEI 33-3 and VDE 560-8
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Safety Class: SH
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Indicative Weight: approx. 0.1 kg
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Reference Dimensions of WB40120 Version: approx. Ø35 × 71 mm, excluding terminals
The visible marking also shows WB 40120 MK, 12 ±10%, V~400 HPFNT, V~450 Hz 50, −25/85, together with the SH, CEI 33-3, and VDE 560-8 markings.
⚡ Function in the Electrical System
It is a run capacitor, used in single-phase motors to create the phase shift required by the auxiliary winding and allow continuous correct motor operation.
Depending on motor sizing, it is suitable for applications such as pumps, fans, compressors, single-phase motors, electromechanical equipment, and HVAC systems. The WB40120 series is also marketed as a permanent capacitor for motors and pumps.
🏭 Construction and Installation
The cylindrical plastic body allows compact installation. The photographed component features two lateral Faston terminals and a threaded mounting stud, a typical solution for permanent motor capacitors.
The capacitor is non-polarized for AC operation, so there is no +/− polarity to observe on the two terminals.
Attention: the terminals must be connected according to the motor wiring diagram and must not be accidentally short-circuited.
🛡️ Safety and Product Condition
The capacitor is used, with normal signs of handling and use visible on the body and terminals. No bulging or obvious damage to the housing is visible in the photographs.
Electrical operation must not be considered verified unless the capacitor has been specifically tested for capacitance, insulation, and leakage current.
As a 400/450 V AC component, it may retain an electrical charge after disconnection. Before handling it, disconnect the circuit and verify the absence of voltage.
📦 Package Contents
- 1 × ICAR Ecofill capacitor
🚀 Final Description
ICAR Ecofill WB 40120 MK, 12 µF ±10%, 400/450 V AC permanent capacitor, designed for applications with single-phase motors. The self-healing metallized polypropylene construction, plastic housing, and threaded mounting stud make it suitable for replacing equivalent run capacitors, provided that capacitance, rated voltage, frequency, and motor characteristics are respected. The WB40120 designation is associated with the 12 µF ICAR version of the Ecofill series.
