Product Description:

The 195N1057 is a low-voltage AC drive manufactured by Danfoss as a member of the VLT 2800 Low Voltage Drives series. Designed for small-horsepower automation, the unit modulates three-phase induction motors so conveyor, pump, or fan speed matches process demand. At this rating, the drive is sized for small centrifugal pumps or conveyors where tight speed regulation improves process quality.

It delivers a continuous mechanical output of 0.75 HP, corresponding to a power rating of 0.55 kW. Under rated load, the inverter supplies 5.2 A to the motor while typically drawing 4.7 A from the mains, and its conversion path operates at 96% efficiency. An IP20 open-chassis enclosure permits panel mounting inside a protected cabinet, and the prefuse value of 20 A limits upstream fault energy. Because the housing is open to ambient air, airflow inside the panel should keep the internal temperature within the drive limits. Coordination with a class gG fuse or breaker of that value ensures disconnection before semiconductor damage can occur. The drive mass of 3.7 kg keeps the cabinet load low, and its short-circuit withstand rating of 100,000 A supports connection to high-capacity feeders.

For brief overloads, the 195N1057 can accept a maximum input current of 7.5 A and deliver up to 8.3 A on the output side for 60 seconds, enabling acceleration of high-inertia loads without nuisance trips. The thermal design accommodates a power loss of 110 W, which must be removed by panel airflow. Five digital inputs provide start, stop, and preset speed functions, and a built-in DeviceNet interface links the drive to distributed control systems. Control terminals tolerate voltages up to 28 V DC, and motor wiring with a 4 mm² cross section avoids excessive conductor heating during overload operation.