Specifications
Electrical Ratings
Input Voltage: 200-240V AC (±10%), 3-phase, 50/60 Hz
Output Power: 18.5 kW (25 HP) at 240V
Output Current: 45.0 A continuous (40°C ambient)
Overload Capacity: 110% for 1 minute every 10 minutes
Output Frequency: 0-250 Hz (standard), 0-500 Hz (optional)
Physical Characteristics
Enclosure: IP21 (indoor use, protected against dripping water)
Dimensions: ~450 × 220 × 240 mm (H×W×D)
Weight: Approx. 15 kg
Cooling: Forced air with temperature-controlled fan
Ambient Temperature: 0°C to +40°C (full rating), up to +50°C with deratin
Control & I/O Configuration
Standard I/O
Digital Inputs: 5 programmable (24V DC)
Digital Outputs: 3 programmable (2 relay, 1 transistor)
Analog Inputs: 2 (0-10V/0-20mA, 12-bit resolution)
Analog Outputs: 2 (0-20mA)
PTC Input: For motor temperature monitoring
The ABB ACH550-01-045A-4 is a specialized HVAC variable frequency drive designed specifically for heating, ventilation, and air conditioning applications. Part of ABB's dedicated HVAC drive family, it incorporates features optimized for pump, fan, and compressor control in building automation systems.