📝 Description

Used product. The EPCOS B84113-S5-B111 is a single-phase 2-line EMC/EMI mains filter, designed to reduce conducted electromagnetic interference present on AC power lines. The photographed unit bears the marking B84113-S5-B111, 11 A – 250 V – 50/60 Hz and, above all, SMA Part No. 64-0161 – Sunny Boy 2500, identifying it as a component intended for use in the SMA Sunny Boy 2500 photovoltaic inverter.
The EPCOS B84113 family consists of mains filters for electronic equipment and power systems, with inductive and capacitive elements designed to suppress conducted interference.

⚙️ Technical Specifications

• Brand: EPCOS / TDK
• Model: B84113-S5-B111
• Type: EMC/EMI mains filter
• Configuration: single-phase, 2-line
• Rated current: 11 A
• Rated voltage: 250 V AC
• Frequency: 50/60 Hz
• Specified application: SMA Sunny Boy 2500
• SMA Part No.: 64-0161
• Input: L / N – Netz
• Output: L' / N' – Last
• Construction: metal housing
• Function: suppression of conducted electromagnetic interference on the AC line
• Visible marking: 09211
• Visible approval: UL mark
• Wiring: conductors already present on the component, as shown in the photographs.

⚡ Function in the Electrical System

The B84113-S5-B111 performs the function of an EMC/EMI filter on the AC circuit of the equipment.
In this specific case, the marking “SMA Part No. 64-0161 – Sunny Boy 2500” indicates its use as a component of the SMA Sunny Boy 2500 photovoltaic inverter, belonging to an ON-GRID photovoltaic system connected to the electrical grid.
The filter is therefore used on the AC side of the inverter, between the section identified as Netz (grid) and the Last (load/equipment) section. Its function is to attenuate high-frequency electromagnetic interference generated by the inverter's power electronics, limiting its propagation toward the electrical grid.
System type: ON-GRID photovoltaic system with grid-connected AC inverter.
It is not an overcurrent or short-circuit protection device and does not replace fuses, circuit breakers or other protective devices.

🔌 Connections and Installation

The nameplate clearly identifies the two sides of the filter:
Netz → L / N → grid side
Last → L' / N' → inverter/equipment side
It is therefore important to follow the connection configuration specified by the manufacturer.
The metal housing contributes to effective shielding of the filter and must be correctly installed inside the equipment, with appropriate electrical connections.

🏭 Applications

The specific documented application for the photographed unit is:

• SMA Sunny Boy 2500 photovoltaic inverter
• ON-GRID photovoltaic systems
• AC inverter circuits
• Power electronic equipment
• Power supplies and converters
• Industrial systems where conducted interference needs to be reduced.
  The correspondence between the EPCOS B84113-S5-B111 model and the 11 A / 250 V / 50–60 Hz rating is also found on the used component market.

🛡️ Safety and Product Condition

The component is used and shows normal signs of use, with surface marks on the metal housing visible in the photographs. The nameplate is clearly legible and there are no obvious breaks in the enclosure.
Electrical operation should not be considered verified in the absence of a specific test.
Before reuse, it is recommended to check:

• continuity of the L/N and L'/N' connections;
• insulation between circuits and housing;
• cable integrity;
• condition of the terminals;
• any leakage or short circuits;
• correct filter behavior during an electrical test.
  The component operates at 250 V AC and must be installed exclusively by qualified personnel, with the equipment completely disconnected from the power supply.

📦 Package Contents

• 1 × EPCOS EMC filter

🚀 Final Description

EPCOS B84113-S5-B111 is a single-phase 2-line EMC/EMI filter, 11 A, 250 V AC, 50/60 Hz, intended to suppress conducted electromagnetic interference on the power supply circuit.
The photographed unit features a specific identification SMA Part No. 64-0161 – Sunny Boy 2500, making it a specific spare part for the electrical section of the SMA Sunny Boy 2500 photovoltaic inverter. The Netz / Last connections distinguish the grid side from the equipment side.
It is therefore a useful component as an original spare part for maintenance and repair work on SMA photovoltaic inverters, always verifying the code correspondence before replacement.