Description
Detailed Parameter Table
| Parameter Name | Parameter Value |
| Product Model | DSSR122 48990001-NK |
| Manufacturer | ABB |
| Product Category | Soft Starter with Integrated Reactor |
| Rated Current | 122A (Continuous) |
| Voltage Rating | 208–690 VAC (50/60 Hz) |
| Starting Current | Adjustable 150–600% FLA |
| Torque Control | Kickstart/Linear Ramp (0.1–60s) |
| Protections | Overload, Phase Loss, Jam, Underload |
| Cooling Method | Convection (IP00) / Forced Air (IP20) |
| Communication | Modbus RTU (RS485) / Profibus DP Option |
| Control Voltage | 24–240 VAC/DC |
| Reactor Rating | 3% Impedance (Harmonic Suppression) |
| Certifications | UL 508, CE, DNV GL, IEC 60947-4-2 |
| Ambient Temperature | -25°C to +60°C (Derate >40°C) |
ABB DSSR122 48990001-NK
Product Introduction
The ABB DSSR122 48990001-NK is an advanced soft starter with integrated harmonic suppression reactor, engineered for heavy-duty motor control applications. Designed as part of ABB’s DSR series, this unit combines torque-controlled starting technology with built-in current-limiting reactors to mitigate harmonic distortion in demanding industrial environments. The ABB DSSR122 48990001-NK provides smooth acceleration/deceleration for motors up to 75 kW (690V), reducing mechanical stress on conveyors, pumps, and compressors while protecting power quality.
Featuring adaptive starting algorithms, this starter automatically compensates for load variations during ramp-up, preventing torque oscillations that cause belt slippage or fluid hammer. The integrated 3% impedance reactor suppresses 5th and 7th harmonics, meeting IEEE 519 voltage distortion limits without external filters. As a critical component in ABB’s intelligent motor control ecosystem, the DSSR122 48990001-NK integrates with ABB Ability™ for predictive maintenance analytics.
Core Advantages and Technical Highlights
Harmonic mitigation engine:
Integrated reactor reduces THDi by 40% compared to standard soft starters, eliminating the need for separate harmonic filters. Continuous thermal monitoring prevents reactor saturation during extended starts.
Adaptive torque intelligence:
Real-time current profiling adjusts ramp curves based on load feedback, preventing conveyor rollback or pump cavitation. “Current Limiting” mode caps inrush during grid weakness conditions.
Multi-network connectivity:
Embedded Modbus RTU with configurable PTC/KTY inputs for motor temperature monitoring. Optional Profibus DP plug-in module (ABB ref: NPBA-12) enables PLC integration.
Robust protection suite:
Phase imbalance detection (≥15% imbalance trip) prevents single-phasing damage. Built-in Class 10 overload relay with manual reset bypass.
Space-optimized design:
Integrated reactor saves 50% panel space versus discrete solutions. Dual-cooling modes support enclosure-free mounting (IP00) or cabinet installation (IP20 with fan kit).
Typical Application Scenarios
In mining conveyor systems, the ABB DSSR122 48990001-NK manages downhill belt regeneration, using controlled deceleration to prevent overvoltage trips. The integrated reactor filters harmonics generated by nearby VFDs, protecting sensitive geological monitoring equipment.
HVAC cooling towers leverage its torque control to synchronize multiple fan motors, eliminating resonance during variable-speed operation. The starter’s -25°C cold-start capability ensures reliable operation in Arctic facilities.
Marine ballast pump control utilizes the DNV GL-certified variant, where reactor-based harmonic suppression meets IEEE 45 shipboard power quality standards. Underload protection detects dry-running conditions during tank transfer operations.
ABB DSSR122 48990001-NK
Related Model Recommendations
DSSR85 48990001-NK: 85A variant for mid-range motors
NPBA-12: Profibus DP communication module
OCH125: Bypass contactor for continuous operation
1SFA899105R1000: Motor thermistor interface module
CM-ENS.13: Energy monitoring sensor kit
DSR-IO-EXT: I/O expansion for auxiliary controls
3HAC065743-001: Fan cooling kit (IP20 upgrade)
1SXU000001R0000: Surge suppressor module
Installation, Commissioning and Maintenance Instructions
Installation preparation: Mount vertically with ≥100mm clearance above reactor section. Use copper busbars (min 25mm width) for main connections. Verify line/load phasing matches control logic. For 690V systems, apply 2.5kV isolation testing before energization.
Maintenance suggestions: Quarterly thermographic scans of reactor terminals (max ΔT ≤15°C phase-phase). Annually clean air channels with dry compressed air (<0.5 bar). Monitor “Starts Counter” in display module; perform contactor resistance test after 50,000 operations. Calibrate current sensors every 24 months.
Service and Guarantee Commitment
ABB provides a 24-month warranty for DSSR122 48990001-NK, including motor protection tuning support. Global 24/7 technical assistance covers harmonic analysis and start curve optimization. Extended service packages include 5-year reactor recertification with impedance testing. All units undergo 100% production testing:
10,000A asymmetric short-circuit validation
Thermal imaging at 150% load (4 hours)
Dielectric testing at 3.5kV for 1 minute
DNV GL certification includes full type approval documentation.
