FC-301PK37T4131X7272 Danfoss
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The Danfoss FC-301PK37T4131X7272 is part of the VLT FC 301 Automation Drives series and supports three phase power with a mains voltage range of 380 to 480 VAC. This drive features a power rating of 0.37 kW or 0.50 HP, an energy efficiency class of IE2, and an efficiency of 0.93. It allows for a maximum shielded motor cable length of 50 meters and unshielded up to 75 meters.
Internal Product Review
The FC-301PK37T4131X7272 is a Danfoss VLT FC 301 automation drive designed for three-phase 380 to 480 VAC systems. A displacement power factor above 0.98 and 93% efficiency give the drive strong electrical performance for energy-conscious automation setups. The 0.37 kW rating makes this model a very practical choice for precise light-duty motor control.
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Product Description:
The FC-301PK37T4131X7272 is a variable frequency drive produced by Danfoss for the VLT FC 301 Automation Drives series. The unit converts fixed three-phase line power into a pulse-width-modulated output so induction motors can operate at regulated speeds and torque levels. With a 0.37 kW power stage, it is suitable for conveyors, pumps, and small process fans that require compact speed control. Its compact format supports installation in distributed automation panels where available mounting space is limited.
With a nominal line supply of 380–480 VAC, the inverter draws 1.2 A when supplied with 380–440 V and 1.0 A when supplied with 441–500 V. The semiconductor bridge delivers a continuous motor output of 0.37 kW, which corresponds to 0.50 HP. Electrical power loss is 35 W, and the conversion efficiency is 0.93, allowing most of the input energy to reach the motor terminals. Apparent demand on the supply is 0.9 kVA at both 400 V and 460 V, which supports appropriate sizing of upstream protection devices. Digital control terminals accept 24 V logic signals at up to 28 V DC, while one transistor output can source 40 mA for a status relay or counter. Shielded motor cables may extend to 50 m, while unshielded motor cables may extend to 75 m. These cable allowances provide flexibility when the drive and motor are mounted in separate parts of a machine.
The drive sustains full output at ambient temperatures up to 45 °C, after which automatic current reduction helps prevent overheating. A displacement power factor greater than >0.98, together with a true power factor of at least 0.9, limits reactive power demand on the supply. Its IE2 efficiency class indicates compliance with energy-efficiency requirements for small adjustable-speed drives. On three-phase networks, the internal DC-link choke smooths current peaks and reduces supply distortion. The control terminals provide a 24 V reference for compatible control devices and input circuits. Operating parameters can be adjusted through the local controls or communicated through an optional fieldbus card.
