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SKB3400055

The Emerson SKB3400055 is a compact, easy-to-use AC variable frequency drive from the Commander SK series. Designed for small-scale industrial applications requiring reliable motor control, this drive provides robust open-loop vector control for three-phase induction motors.

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Technical Parameters (SKB3400055) Model: SKB3400055 Series: Commander SK Product Type: AC Variable Frequency Drive (Inverter) Input Phase: Three-phase Input Voltage: 380V to 480V AC ±10% Input Frequency: 48 to 62 Hz Rated Output Current: 5.5 A (RMS) Typical Motor Power (at 400V): 2.2 kW (3 HP) - Heavy Duty / Constant Torque 3.0 kW (4 HP) - Normal Duty / Variable Torque Output Voltage: 3-phase, 0 to rated input voltage (variable frequency) Output Frequency: 0 to 1500 Hz (programmable) Control Mode: Open-loop Vector (Sensorless) / V/Hz Switching Frequency: 3 kHz to 16 kHz (adjustable, derating applies at higher frequencies) Overload Capacity: 150% for 60 seconds (Normal Duty rating) Digital Inputs: 4 x programmable digital inputs Analog Input: 1 x analog input (0-10V, 4-20mA selectable) Analog Output: 1 x analog output (0-10V) Relay Output: 1 x changeover relay output (programmable) Communications: Standard MODBUS RTU (RS485) via RJ45 Braking: Standard dynamic braking unit (integrated transistor) Protection Class: IP20 (requires enclosure for installation) Operating Temperature: -10°C to +40°C (at 3 kHz switching frequency, derating to 50°C) Cooling Method: Natural convection or forced air (depending on configuration) Dimensions (H x W x D): Approx. 150 mm x 70 mm x 120 mm (5.9" x 2.8" x 4.7") - typical for size 1 Weight: Approx. 1.0 kg (2.2 lbs) Standards: CE, UL, cUL, EN61800-3, RoHS