Overview
The Siemens B25833-U4306-A009 is a metallized plastic film (MKV) capacitor engineered for industrial electrical applications. Rated for 30µF capacitance at 330V AC with dual frequency rating (50/60Hz), this unit is a proven component in power distribution, motor circuits, and harmonic compensation systems. Built to Siemens’ quality standards, the B25833-U4306-A009 delivers stable performance across extended temperature ranges typical of manufacturing environments.
Key Features
- Capacitance: 30µF with tight tolerance specifications
- Operating Voltage: 330V AC, rated for both 50Hz and 60Hz frequencies
- Metallized polypropylene dielectric for self-healing capability and long operational life
- Snap-in or solder terminals for flexible mounting in legacy and modern equipment
- Compact case design suitable for retrofit and original equipment installations
Technical Specifications
The B25833-U4306-A009 meets the design requirements of industrial power conditioning and motor control circuits:
- Capacitance: 30µF
- Rated Voltage (AC): 330V
- Frequency Rating: 50/60Hz dual frequency
- Dielectric Type: Metallized polypropylene (MKV)
- Termination Options: Snap-in or solder pins available
- Operating Temperature Range: Typical industrial range –25°C to +85°C
- Case Style: Standard cylindrical aluminum or plastic shell
- Approvals: Designed to IEC 61071 standards for power capacitors
Typical Applications
- Power factor correction in three-phase and single-phase motor circuits
- Motor run capacitors for pump motors, compressors, and industrial fans
- Harmonic filtering and reactive power compensation in production equipment
- Energy storage and voltage stabilization in control panel circuits
- Retrofit replacement in legacy industrial machinery and control systems
Compatibility & Replacements
The B25833-U4306-A009 is a direct fit for equipment originally specified with Siemens MKV capacitors of matching voltage and capacitance ratings. When sourcing replacements, verify the exact capacitance (30µF), voltage (330V), and frequency rating (50/60Hz) to ensure compatibility. This unit is typically used in European and global industrial equipment where dual-frequency support is essential. Alternative metallized film capacitors from manufacturers such as EPCOS (Siemens subsidiary) and other industrial suppliers may offer compatibility, but always consult original equipment documentation before substitution.
