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Cleanroom Equipment Spare Parts
FFU Power Supply Module
A compact enclosed electrical module that provides matched, protected power for an FFU motor and its speed-control electronics.
- Matched FFU Output
- Ventilated Metal Enclosure
- Protected Terminal Access
- Compact Retrofit Format
Product Introduction
The FFU power supply module converts and distributes incoming electrical power to the fan motor and associated control circuit. A perforated folded-metal enclosure protects energized components while allowing heat to leave the compact ceiling-mounted assembly. Separate terminal groups simplify input, motor-output and control wiring, while a replaceable protective device helps isolate electrical faults. Voltage, current capacity, control topology, terminal assignment and mounting dimensions must be matched to the original FFU system.
Key Features
Separated terminal groups reduce confusion between supply, motor and control connections.
A replaceable fuse or protective device provides localized electrical fault isolation.
Multiple mounting-slot and terminal arrangements support replacement in compact FFU housings.
Customer Product Concerns
A replacement supply must match the FFU electrical load and control architecture without creating excess heat in the shallow plenum.
Incorrect output voltage or current capacity causes unstable fan operation.The module is selected against the original motor rating, starting demand and control circuit load.
Restricted ceiling space allows heat to accumulate around power electronics.A perforated enclosure and component spacing provide a defined natural-convection path.
Unclear field terminals lead to input and motor wiring errors.Physically separated pluggable or screw-terminal groups support orderly circuit identification.
A module with different mounting points cannot be secured inside the FFU.Enclosure footprint, slot spacing and terminal orientation can be matched to the existing control box.
Typical Applications
Cleanroom fan filter unitsLaminar-flow ceiling modulesFFU control-box refurbishmentMini-environment air modules
Technical Parameters
Typical construction ranges for enclosed FFU power supply modules are shown below.
| Core Material | FR-4 power-control board with copper conductors, transformer or switched-mode components |
|---|---|
| Panel Thickness | 45-100 mm nominal enclosure depth |
| Effective Width | 100-220 mm nominal enclosure width |
| Maximum Length | Up to 320 mm overall enclosure length |
| Steel Facing Thickness | 0.8-1.2 mm galvanized or coated steel enclosure |
| Core Density | 1850-2000 kg/m³ for FR-4 circuit-board substrate |
| Thermal Conductivity | 0.25-0.40 W/(m·K) through typical FR-4 substrate |
| Surface Finish | Natural zinc-coated silver enclosure with green pluggable or screw terminals |
| Joint Type | Folded ventilated cover with screw fastening, mounting slots and terminal-block connections |
| Customization | Available based on the intended application and operating environment. |
Available Options
Matched AC input and motor outputEC-fan control supplyPluggable or fixed screw terminalsCustom enclosure and mounting slots
Planning a FFU Power Supply Module specification?
Send us your dimensions, installation conditions, performance targets and required surface finish.
