Operating within three-phase industrial power grids, the ABB ACS550-01-125A-4 variable frequency drive provides speed and torque regulation for three-phase induction motors. Engineered for normal-duty applications up to 55 kW (100 HP), this drive combines vector control, scalar control, and a built-in harmonic mitigation swing choke to optimize mechanical performance and energy efficiency. The unit is housed in a robust IP21 (UL Type 1) enclosure, making it suitable for standard side-by-side cabinet mounting or direct wall integration within clean, dry industrial environments.
| Parameter | Value / Specification |
|---|---|
| Manufacturer | ABB |
| Model Number | ACS550-01-125A-4 |
| Input Voltage Range | 380 - 480 V AC (3-Phase) |
| Input Frequency Range | 48 to 63 Hz |
| Output Power (Normal Use) | 55 kW / 100 HP |
| Output Current (Normal Use) | 125 A |
| Enclosure Rating | IP21 (UL Type 1) |
| Frame Size | R4 |
| Operating Temperature Range | -15 to 40 degC (No derating) / up to 50 degC (With derating) |
| Shipping Weight (Calculated) | 34.00 kg |
| Package Dimensions (Calculated) | 265 mm (W) x 739 mm (H) x 286 mm (D) |
| Commodity Code | 85044095 |
| Terminal / Port | Function / Signal Assignment |
|---|---|
| U1, V1, W1 | Three-phase AC line input supply terminals |
| U2, V2, W2 | Three-phase motor connection output terminals |
| UC+, UC- | DC bus connection (for dynamic brake chopper modules) |
| X1: AI1 / AI2 | Programmable analog inputs (Voltage 0-10V, Current 0/4-20mA) |
| X1: DI1 to DI6 | Programmable digital inputs (PNP/NPN, 24V DC auxiliary power) |
| X1: RO1, RO2, RO3 | Programmable form-C relay outputs (250V AC / 30V DC, max 2A) |
The ACS550-01-125A-4 is part of the mature ACS550 line. For modern migration tracks or new infrastructure planning, the ABB ACS580-01-124A-4 serves as the direct hardware replacement. Note that when migrating to the ACS580 series, control panel templates and serial parameter sets must be updated since parameter indexes and software profiles differ between the older ACS550 firmware and newer Drive-to-Drive platforms.
To prevent thermal accumulation, ensure a minimum clearance of 200 mm above and below the R4 frame size when mounting inside electrical enclosures. Driving high-inertia loads like heavy ventilation fans or industrial centrifuges without a braking resistor can trigger overvoltage trips (Fault 2 - DC OVERVOLT) during rapid deceleration ramps. To mitigate this issue, configure the drive parameter to utilize the "deceleration-limit" function or integrate an external dynamic braking chopper unit.
Always configure the correct Application Macro (e.g., HVAC, 3-wire, or PID control) during initial start-up, as changing the macro later will restore default values and overwrite customized digital input routing. To suppress high-frequency electrical noise, use symmetrical shielded motor cabling and ground the shield 360 degrees at both the VFD PE terminal plate and the motor terminal box.
CRITICAL WARNING: ELECTRICAL HAZARD
Prior to commencing installation or maintenance, isolate all incoming power lines. Wait at least 5 minutes after disconnecting the power supply to allow the internal DC bus capacitors to fully discharge. Always verify the absence of voltage on terminals U1/V1/W1, U2/V2/W2, and UC+/UC- with a certified multimeter before handling connection terminals.
Global Express Shipping
Returns & Warranty
Manufacturer: ABB
Product No.: ACS550-01-125A-4
Country of origin:Sweden
Product Type: Variable Frequency Drives
Barcode: 85044095
Payment: T/T, Western Union
Weight: 34000g
Dimensions: 265 mm (W) x 739 mm (H) x 286 mm (D)
Shipping port: Xiamen
Warranty: 12 months
Operating within three-phase industrial power grids, the ABB ACS550-01-125A-4 variable frequency drive provides speed and torque regulation for three-phase induction motors. Engineered for normal-duty applications up to 55 kW (100 HP), this drive combines vector control, scalar control, and a built-in harmonic mitigation swing choke to optimize mechanical performance and energy efficiency. The unit is housed in a robust IP21 (UL Type 1) enclosure, making it suitable for standard side-by-side cabinet mounting or direct wall integration within clean, dry industrial environments.
| Parameter | Value / Specification |
|---|---|
| Manufacturer | ABB |
| Model Number | ACS550-01-125A-4 |
| Input Voltage Range | 380 - 480 V AC (3-Phase) |
| Input Frequency Range | 48 to 63 Hz |
| Output Power (Normal Use) | 55 kW / 100 HP |
| Output Current (Normal Use) | 125 A |
| Enclosure Rating | IP21 (UL Type 1) |
| Frame Size | R4 |
| Operating Temperature Range | -15 to 40 degC (No derating) / up to 50 degC (With derating) |
| Shipping Weight (Calculated) | 34.00 kg |
| Package Dimensions (Calculated) | 265 mm (W) x 739 mm (H) x 286 mm (D) |
| Commodity Code | 85044095 |
| Terminal / Port | Function / Signal Assignment |
|---|---|
| U1, V1, W1 | Three-phase AC line input supply terminals |
| U2, V2, W2 | Three-phase motor connection output terminals |
| UC+, UC- | DC bus connection (for dynamic brake chopper modules) |
| X1: AI1 / AI2 | Programmable analog inputs (Voltage 0-10V, Current 0/4-20mA) |
| X1: DI1 to DI6 | Programmable digital inputs (PNP/NPN, 24V DC auxiliary power) |
| X1: RO1, RO2, RO3 | Programmable form-C relay outputs (250V AC / 30V DC, max 2A) |
The ACS550-01-125A-4 is part of the mature ACS550 line. For modern migration tracks or new infrastructure planning, the ABB ACS580-01-124A-4 serves as the direct hardware replacement. Note that when migrating to the ACS580 series, control panel templates and serial parameter sets must be updated since parameter indexes and software profiles differ between the older ACS550 firmware and newer Drive-to-Drive platforms.
To prevent thermal accumulation, ensure a minimum clearance of 200 mm above and below the R4 frame size when mounting inside electrical enclosures. Driving high-inertia loads like heavy ventilation fans or industrial centrifuges without a braking resistor can trigger overvoltage trips (Fault 2 - DC OVERVOLT) during rapid deceleration ramps. To mitigate this issue, configure the drive parameter to utilize the "deceleration-limit" function or integrate an external dynamic braking chopper unit.
Always configure the correct Application Macro (e.g., HVAC, 3-wire, or PID control) during initial start-up, as changing the macro later will restore default values and overwrite customized digital input routing. To suppress high-frequency electrical noise, use symmetrical shielded motor cabling and ground the shield 360 degrees at both the VFD PE terminal plate and the motor terminal box.
CRITICAL WARNING: ELECTRICAL HAZARD
Prior to commencing installation or maintenance, isolate all incoming power lines. Wait at least 5 minutes after disconnecting the power supply to allow the internal DC bus capacitors to fully discharge. Always verify the absence of voltage on terminals U1/V1/W1, U2/V2/W2, and UC+/UC- with a certified multimeter before handling connection terminals.
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
Sweden
|
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