ABB DSSR122 48990001-NK Integrated protection relay

ABB DSSR122 48990001-NK Integrated protection relay

Specific Parameters​

Core and Function Parameters​

Product Type Digital Motor Comprehensive Protection Relay​

Manufacturer ABB​

Model DSSR122, Part Number 48990001-NK​

Series Relion® Series​

Protection Functions Overload Protection, Over-current Protection, Short-circuit Protection, Under-voltage Protection, Over-voltage Protection, Earth Fault Protection, Locked Rotor Protection, Phase Failure Protection​

Control Functions Direct Start, Star-Delta Start, Autotransformer Start Control​

Measured Parameters Three-phase Current, Line Voltage, Power, Electrical Energy, Frequency, Motor Temperature​

Input Interfaces 3-channel Current Transformer Input, 3-channel Line Voltage Input, 4-channel DI Digital Input, 2-channel RTD Temperature Input​

Output Interfaces 3-channel DO Relay Output (C-type Contacts), 1-channel 4-20mA Analog Output​

Communication Interface RS485 Interface​

Supported Protocols Modbus RTU Protocol​

Compatible Motors Medium and Low-voltage AC Motors (Rated Voltage AC 220V/380V/660V)​

Protection Settings Configurable via Panel Buttons or Software, Supporting Multi-group Setting Storage​

Fault Recording Stores Latest 100 Fault Records (Including Fault Type, Time, Parameter Values)​

Diagnostic Functions Transformer Open Circuit Diagnosis, Power Fault Diagnosis, Motor Overheating Warning, Self-fault Self-test​

Display Mode Two-line LCD Display (Chinese/English Optional)​

Operation Methods Panel Button Operation, Remote Communication Control​

Installation Methods Panel Mounting, DIN Rail Mounting (Optional Mounting Bracket)​

Certification Standards CE, UL, cUL, RoHS, IEC 60947-6-2​

Status Indication Power Normal (Green LED), Operation Status (Yellow LED), Protection Action (Red LED), Communication Normal (Blue LED)​

Electrical and Performance Parameters​

Power Supply Voltage AC 110V/220V (allowable fluctuation range ±15%), DC 24V/110V/220V (allowable fluctuation range ±20%)​

Power Consumption ≤10W (under AC 220V working condition)​

Current Measurement Range 0.1A-100A (direct input), 0.1A-6300A (via CT input, CT ratio configurable)​

Voltage Measurement Range AC 100V/220V/380V​

Measurement Accuracy Current Measurement ±0.5% full scale, Voltage Measurement ±0.5% full scale, Power Measurement ±1.0% full scale​

Protection Action Time Short-circuit Protection ≤20ms, Overload Protection Inverse Time Characteristic (complies with IEC 60947-4-1 standard)​

Relay Output Capacity 5A/AC 250V, 5A/DC 30V​

Analog Output Accuracy ±0.2% full scale​

Communication Rate 1200bps-19200bps (configurable)​

Isolation Level 3-way Isolation (Input-Output-Power), Isolation Voltage 2500V AC/1min​

Common Mode Rejection Ratio ≥80dB (50/60Hz)​

Physical and Environmental Parameters​

Overall Dimensions 96mm×96mm×110mm (L×W×D)​

Weight Approximately 350g​

Operating Temperature Range -25°C to 70°C​

Storage Temperature Range -40°C to 85°C​

Relative Humidity 5%-95% (non-condensing, no dew)​

Protection Rating IP54 (panel part), IP20 (back terminal block)​

Housing Material Flame-retardant ABS Plastic (UL94 V-0 Grade)​

Vibration Resistance 10-500Hz, 1.5G (30min per X/Y/Z axis)​

Shock Resistance 25G (11ms, 3 times per X/Y/Z axis)​

Electromagnetic Compatibility Complies with IEC 61000-4 Series Standards​

Product Performance​

Integrates 8 core protection functions, covering fault scenarios during the entire motor operation stage, with precise protection logic and fast action response​

0.5-class high-precision measurement, real-time monitoring of key parameters such as three-phase current, voltage and power, with extremely high data acquisition reliability​

Supports multiple motor start-up control methods, adapting to motors of different power levels and load characteristics with high functional flexibility​

RS485 communication + Modbus protocol, seamlessly accessing PLC/DCS systems to realize remote monitoring and setting modification with convenient operation and maintenance​

Dual installation method design, LCD Chinese/English display + multi-status LED indicators, making operation and status observation intuitive and clear​

Wide operating temperature range of -25°C to 70°C + IP54 protection rating, adapting to harsh industrial environments such as high temperature, dust and humidity​

100 fault record storage + fault cause tracing function, facilitating operation and maintenance personnel to quickly troubleshoot problems and shorten downtime​

Industrial-grade 3-way isolation and anti-electromagnetic interference design, maintaining stable protection and measurement performance in complex electromagnetic environments​