Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
131U2764 Danfoss VLT FC-102 HVAC Drive 37 kW / 50 HP, 380 – 480 VAC, IP66
Danfoss 131U2764 VLT HVAC Drive FC-102 frequency converter, a 37 kW three-phase variable frequency drive designed for HVAC, ventilation, refrigeration and building automation applications.
£2,705.45
Danfoss 131U2764 at a glance
The Danfoss 131U2764 is a 37 kW / 50 HP VLT HVAC Drive FC 102 for 3 × 380–480 V AC supplies, made for the fans, pumps and compressors in building services. It is a frame C1, IP66 / UL Type 4X unit, built for wall mounting in wet, dusty or wash-down locations.
This configuration has RFI class A2 (C3), no brake chopper, and a numeric LCP 101 control panel. The full type code is decoded alongside the FAQs.
Sizing and installation
- Continuous output current: up to 73 A. Size the drive on the motor nameplate current at your actual supply voltage.
- Intermittent (overload) current: up to 80.3 A — the normal-overload rating that suits variable-torque fan and pump loads.
- Enclosure: IP66 / UL Type 4X — built for wall mounting in wet, dusty or wash-down locations.
- EMC: RFI class A2 (C3). Check the permitted screened motor cable length in the Danfoss FC 102 Design Guide.
FC 102 features for HVAC
- Built-in RS-485 protocols: Danfoss FC, Modbus RTU, BACnet MS/TP, Metasys N2 and FLN Apogee — connects to most building management systems without an option card.
- Fire Mode keeps the drive running during an emergency, for example to keep smoke-extract fans turning.
- Automatic Energy Optimisation (AEO) cuts motor losses at part load — Danfoss quotes a further 5–15% saving.
- Pump and fan functions: sleep mode, dry-pump, end-of-curve and broken-belt detection, plus a built-in cascade controller for pump sets.
- Built-in DC coils limit mains harmonics (EN 61000-3-12).
- Smart Logic Controller for simple sequencing without a PLC.
Where the energy saving comes from
Centrifugal fans and pumps follow the affinity laws: absorbed power falls with the cube of speed. Running at 80% speed needs roughly half the power of full speed (0.8³ ≈ 0.51, before motor and drive losses) — which is why speed control pays back faster on fans and pumps than almost any other load.
Other sizes and enclosures
Same configuration, different power
This drive37 kWDanfoss 131U2764IP66 / UL Type 4X · frame C1
Larger45 kWDanfoss 131U2767IP66 / UL Type 4X · frame C1View drive →
Same 37 kW rating, other enclosures
This driveIP66Danfoss 131U2764IP66 / UL Type 4X
EnclosureIP20Danfoss 131F5451IP20 / chassisView drive →
EnclosureIP21Danfoss 131F1453IP21 / UL Type 1View drive →
EnclosureIP55Danfoss 131F3495IP55 / UL Type 12 with backplateView drive →
Typical applications
✓ Supply and extract fans in air-handling units
✓ Chilled- and hot-water circulation pumps
✓ Cooling towers and condenser fans
✓ Booster sets and multi-pump stations
✓ Ventilation and smoke-extract systems
Technical Specifications
Tick the specs you need, then view products that match.
| Power | 37 kW | |
|---|---|---|
| Voltage | 480 V | |
| Phase | Three Phase | |
| IP Rating | IP66 | |
| EMC Filter | Industrial | |
| Series | VLT® HVAC Drive FC-102 | |
| SKU | 131U2764 | |
| Product type | Frequency converter / variable speed drive | |
| Rated output power | 37 kW / 50 HP | |
| Continuous current | up to 73 A | |
| Intermittent current | up to 80.3 A | |
| Input voltage | 380–480 V AC | |
| Input phases | Three phase | |
| Apparent power | approx. 50.6 kVA | |
| Power loss | approx. 739 W | |
| Protection rating | IP66 / NEMA 4X | |
| Frame size | C1 | |
| RFI filter | H2 / Class A2 (C3) | |
| Brake chopper | No brake chopper | |
| Control panel | Numerical local control panel | |
| PCB coating | Not coated | |
| Mains option | No mains option |
Frequently asked questions
Which communication protocols are built in?
Danfoss FC, Modbus RTU, BACnet MS/TP, Metasys N2 and FLN Apogee over the built-in RS-485 port. This unit has no fieldbus option card fitted, so PROFIBUS, PROFINET, EtherNet/IP or BACnet/IP would need an MCA option card.
What output current does it deliver at 400 V and at 480 V?
Continuous output current is up to 73 A; intermittent current is up to 80.3 A. Always size on the motor nameplate current at your supply voltage.
Can this drive be wall mounted without a panel?
Yes. The IP66 / UL Type 4X enclosure is designed for direct mounting.
Type code decoded
FC-102P37KT4E66H2XNXXXXSXXXXAXBXCXXXXDX
G fitted / defines this unit X not fitted / standard
| Product series Position 1–6 | VLT HVAC Drive FC 102 | FC-102 |
|---|---|---|
| Power size Position 7–10 | 37 kW / 50 HP | P37K |
| Mains voltage Position 11–12 | 3 × 380–480 V AC | T4 |
| Enclosure Position 13–15 | IP66 / UL Type 4X | E66 |
| RFI filter Position 16–17 | RFI class A2 (C3) | H2 |
| Brake / Safe Stop Position 18 | No brake chopper | X |
| Local control panel Position 19 | Numeric LCP 101 | N |
| PCB coating Position 20 | Standard (uncoated) PCBs | X |
| Mains option Position 21 | No mains option | X |
| Adaptation A Position 22 | Standard cable entries | X |
| Adaptation B Position 23 | Standard | X |
| Software release Position 24–27 | Latest standard release | SXXX |
| Software language Position 28 | Standard language package | X |
| A option (fieldbus) Position 29–30 | No fieldbus option | AX |
| B option (I/O) Position 31–32 | No B option | BX |
| C0 option Position 33–34 | No C0 option | CX |
| C1 option Position 35 | No C1 option | X |
| C option software Position 36–37 | None | XX |
| D option Position 38–39 | No D option | DX |
