Description
Used product. The EPCOS B25620-S0507-K661 is a power capacitor for power electronics applications, featuring a nominal capacitance of 500 µF and a rated DC voltage of 660 V DC. The component belongs to the EPCOS B25620 family and is manufactured in a Dry Type configuration, without PCB, with a safety overpressure device. The exact part number is also identifiable in the used industrial spare parts market.
The photographs show normal signs of previous use, including light abrasions and superficial dulling of the metal housing. The body appears intact and the lower terminals are present. Electrical functionality cannot be verified by visual inspection alone.
⚙️ Technical Specifications
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Brand: EPCOS
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Model: B25620-S0507-K661
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Rated Capacitance: 500 µF
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Tolerance: ±10%
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Rated DC Voltage: 660 V DC
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Insulation Voltage: 3 kV
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Operating Temperature: −55 °C … +60 °C
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Technology: Dry Type power capacitor
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Standard: IEC 61071
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Protection: SH – Safety Overpressure Device
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Configuration: No PCB
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Construction: Cylindrical metal housing
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Installation: Mounting via threaded stud
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Reference Dimensions: approx. Ø85 × 142 mm
⚡ Function in the Electrical System
The B25620-S0507-K661 is designed for power electronics systems where high capacitance is required for electrical energy management and DC voltage stabilization.
A capacitance of 500 µF at 660 V DC makes it suitable, depending on the equipment design, for circuits such as:
- DC buses
- Power converters
- Industrial inverters
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AC/DC and DC/AC conversion systems
- DC voltage filtering and smoothing
- High-power industrial systems
Compatibility should always be verified by comparing capacitance, voltage, dimensions, connections, and dynamic characteristics with the original capacitor.
🏭 Construction & Installation
The capacitor features a robust cylindrical metal housing with an axial mounting system using a threaded stud.
The No PCB configuration indicates a component intended for direct connection within the equipment, while SH identifies the safety device designed to protect against internal overpressure conditions.
During installation, adequate mechanical and electrical tightening must be ensured, avoiding excessive stress on the terminals and maintaining the required insulation clearances specified by the equipment manufacturer.
🌐 Applications
The component may be used as a replacement in:
- Industrial inverters
- Static converters
- Power supplies and power systems
- Electrical drives
- Energy conversion systems
- Industrial equipment with high-voltage DC buses
- DC filtering and temporary energy storage systems
The B25620-S0507-K661 part number is also found in the industrial used-spares market, where it is identified as an EPCOS 500 µF / 660 V capacitor.
💡 Key Advantages
- High capacitance: 500 µF
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660 V DC rated voltage
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±10% tolerance
- Wide temperature range: −55/+60 °C
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Dry Type construction
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SH safety device
- Compliant with IEC 61071
- Compact and robust construction
- Suitable for industrial power electronics systems
🛡️ Safety & Product Condition
⚠️ WARNING: HIGH-VOLTAGE COMPONENT.
The capacitor may retain a dangerous electrical charge even after the equipment has been disconnected from the power supply. The component label itself clearly states “Discharge before handling.”
Before handling, installing, or testing the capacitor, a controlled discharge must be performed and the absence of residual voltage must be verified using suitable test equipment.
The component is used, with cosmetic signs consistent with previous installation. It is not declared to be functional based on the photographs alone. For a tested-component sale, at minimum, capacitance, insulation, and electrical behavior should be properly verified.
📦 Package Contents
- 1 × EPCOS B25620-S0507-K661 Capacitor
- Capacitance: 500 µF ±10%
- Rated Voltage: 660 V DC
- Configuration: Dry Type – No PCB
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SH safety device
🚀 Final Description
The EPCOS B25620-S0507-K661 is a 500 µF / 660 V DC power capacitor designed for industrial energy conversion and power management applications. Its Dry Type construction, SH safety device, compliance with IEC 61071, and high rated voltage make it an interesting replacement component for inverters, converters, and power electronics systems.
This is a physically large component with specific electrical characteristics. Replacement should therefore only be carried out using a component with fully compatible specifications.
