Siemens 6SE6440-2AD37-5FA1 MICROMASTER 440 Drive
A 380–480 V class MICROMASTER 440 rated 75 kW in constant-torque duty.
Product Overview
Siemens 6SE6440-2AD37-5FA1 is a 75 kW MICROMASTER 440 variable-frequency drive for three-phase 380–480 V systems, converting the incoming supply into controlled motor output.
This drive uses the same MM440 parameter architecture as smaller units, but its high-power wiring, protection, cooling and commissioning require the exact frame-specific instructions.
75 kW constant-torque output distinguishes this exact order number.
Cable size, fusing, ventilation and DC-link safety must be reviewed for the high-current frame.
Technical Specifications
| Brand | Siemens |
|---|---|
| Model | 6SE6440-2AD37-5FA1 |
| Product Type | Variable-Frequency Drive |
| Country | Germany |
| Input range | 3 AC 380–480 V ±10% |
| CT output rating | 75 kW / 100 hp |
| Output power | 110.5 kVA |
| CT input current | 139 A |
| CT output current | 145 A |
| Frame | High-power MICROMASTER 440 configuration |
| Frame size | F |
| VT input current | 169 A |
| VT output current | 178 A |
| Fuse rating | 250 A |
| Recommended fuse | 3NA3144; UL 3NE1227-0 |
| Input cable range | 95–150 mm² / AWG 3/0–300 |
| Output cable range | 95–150 mm² / AWG 3/0–300 |
| Weight | 75 kg / 165 lb |
| Power-terminal torque | 50 Nm / 445 lbf·in |
| Mounting clearance | 350 mm above and below |
Drive Application
6SE6440-2AD37-5FA1 delivers 75 kW constant-torque output from the 380–480 V supply class and uses the Frame F high-power construction.
The 145 A constant-torque output requires the documented fuse, conductor range, terminal torque and cabinet clearance rather than the hardware practices used for smaller MICROMASTER frames.
The Frame F unit is intended for the high-power end of the MICROMASTER 440 family, where cabinet airflow, conductor space and protective devices are integral to the drive installation.
Frame F Installation Dimensions
Frame F uses an 810 × 300 mm drilling pattern with four M8 fasteners. The compact instructions require 350 mm free space above and below the inverter.
Power conductors are specified from 95 to 150 mm², and the high-power terminals require 50 Nm tightening torque.
The 810 × 300 mm mounting pattern uses four M8 fasteners, and the required free space above and below maintains the cooling path around the 75 kW drive.
6SE6440-2AD37-5FA1 FAQ
What output is documented for 6SE6440-2AD37-5FA1?
The Siemens table lists 75 kW (100 hp) constant torque and 110.5 kVA output power.
What voltage class is it for 6SE6440-2AD37-5FA1?
It is in the 3 AC 380–480 V ±10% group.
Why can a smaller MM440 procedure not be copied blindly for 6SE6440-2AD37-5FA1?
High-power frames have different terminals, cable sizes, protection, cooling and handling requirements.
What must be archived for 6SE6440-2AD37-5FA1?
Save the complete parameter set, motor data, I/O and fieldbus settings, braking configuration and fault history.
What closes commissioning for 6SE6440-2AD37-5FA1?
Verify motor direction, current, acceleration, protection trips, communications and operation under controlled load.
Which cabinet conditions should be reviewed for 6SE6440-2AD37-5FA1?
Check installation clearance, ventilation path, ambient temperature and power-cable space for the high-power frame before energization.
Drive sizing enquiry
Drive requests are reviewed using the complete Siemens order number, supply voltage class and rated motor output instead of a shortened family name.
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