Danfoss 132F0059 VLT Micro Drive FC 51 15 kW 380-480 V Frequency Converter

A 15 kW drive for 20 hp motors in the M4 frame

132F0059 is the Danfoss VLT Micro Drive FC 51 rated 15 kW (20 hp) on 380-480 V three-phase supplies, model code FC-051P15KT4E20H3BXCXXXSXXX. It shares the M4 enclosure with the 11 kW unit, so panel cut-outs and mounting holes are identical, but its 31.0 A continuous output at 380-440 V and 42.0 A input current call for heavier supply cabling and a larger share of the cabinet cooling budget. The model code is the one requested in the list as FC-051P15K and is confirmed by the Danfoss store under this ordering number.

Technical specifications

What changes between the 11 kW and 15 kW M4 drives

Both M4 units use 63 A gG fuses in non-UL installations, but the 15 kW input current is 42.0 A continuous (60.0 A intermittent) at 380-440 V, compared with 33.0 A for the 11 kW. Power loss rises from 290.0 W to 387.0 W best case, so check heat dissipation in the enclosure. Efficiency is 97.7 percent best case and 97.4 percent typical. Mains and motor terminals accept 4 mm2 (10 AWG) cable, and the brake chopper is built in. Use a motor with insulation rated for inverter supply and keep shielded motor cables within 15 m or use an external filter.

The 15 kW rating draws 42.0 A continuous from a 380-440 V supply, so the installer must check the supply cable against local regulations and the 63 A gG fuse; the drive terminals accept 4 mm2. Heat loss is 387.0 W best case and 454.0 W typical, about 2.6 to 3.0 percent of the rating. Efficiency is 97.7 percent best case and 97.4 percent typical. The Danfoss store lists a net weight of 6 kg and a gross weight of 6.39 kg. Output current rises from 23.0 A on the 11 kW to 31.0 A here, an increase of about 35 percent in the same enclosure.

Ordering number, accessories and availability

The code FC-051P15KT4E20H3BXCXXXSXXX has P15K for 15 kW, T4 for 380-480 V and the same H3, B, X, C options. For the M4 frame the Design Guide lists a Type 1 kit 132B0120 and a decoupling plate 132B0122; no IP21 kit is listed for this frame. The Design Guide ordering table pairs no MCC 107 line filter with this number. Danfoss gives June 30, 2026 as last time buy and September 30, 2026 as last time delivery for this number and offers the iC2-Micro as the upgrade. Quote 132F0059 together with the full model code when requesting a price.

Key features of the VLT Micro Drive FC 51

• Two control principles – VVC+ for good torque control up to 200 Hz, and U/f up to 400 Hz for simple fan and pump loads or special motors.
• Integrated RFI filter – the H3 code in the model string indicates the built-in filter listed in the specification table, so many installations need no external filter.
• Built-in brake chopper – at this rating a braking resistor can be connected directly, useful for conveyors and machines that must stop quickly or that regenerate energy.
• Process PI controller – lets the drive hold pressure, level or flow from a 4–20 mA transmitter without a separate controller.
• Removable keypad – the local control panel with potentiometer can be used for setup and parameter copying between drives.

Selecting the 15 kW unit correctly

The decisive figure is the motor full-load current compared with the drive’s 31.0 A continuous output at 380–440 V. Many 15 kW four-pole motors sit just under this value at 400 V, but the margin is small, so the nameplate should be checked rather than assuming kilowatt equals kilowatt. The 150% short-term overload for one minute covers normal acceleration of pumps, fans and conveyors. For high-inertia loads with long starts, or where the panel will run warm, the next rating up gives more headroom.

Installation and maintenance notes

• The IP20 chassis must be installed in an enclosure that can remove the 454 W typical dissipation in addition to other heat sources.
• Mount drives side by side as allowed by the Danfoss operating instructions, keeping the stated clearance above and below for cooling air.
• Size the supply cable for the 42.0 A input current at 380–440 V and protect it with the 63 A gG fuses listed above.
• Use screened motor cable and keep motor and control cables separated to limit interference.
• Clean the heat sink and check the cooling fan periodically, especially on dusty sites.

Applications in Oman and GCC conditions

A 15 kW Micro Drive is commonly used on irrigation and transfer pumps, cooling tower fans, ventilation fans and conveyors. High ambient temperatures are the main design constraint in the region: if the enclosure air temperature can exceed the rated ambient, output current must be derated as described in the design guide. Generator-supplied sites benefit from soft acceleration, which reduces the starting load on the generator compared with direct-on-line starting.

What to include in your RFQ

• Ordering number 132F0059 and quantity.
• Motor nameplate data and the driven load.
• Any accessories, such as a remote mounting kit for the keypad, braking resistor or line reactor.
• Delivery location and documentation needs.

Documents and quotation

The FC 51 Design Guide MG02K402 from Danfoss is linked on this page. See the AC drives category and the Danfoss FC 51 0.75-2.2 kW page. Seven Star LLC supplies from Muscat as an independent company. For a quotation, tell us the installed drive label, the motor rating and the options you need, and check every figure here against the Danfoss document before ordering.