Description
ABB 3BHE030579R0006 UNITROL 1020 UNS 0119
Product Introduction
The ABB UNITROL 1020 UNS 0119 controller is a compact and versatile protection and control unit designed for generator and industrial protection applications. The ABB UNITROL 1020 combines reliable protection functions with measurement and control capabilities, making it suitable for small to medium-sized generator sets, standby power systems, and prime power installations.
This product integrates both protective elements and system control logic in a single device, optimized for use where space is limited but comprehensive protection and monitoring are required. Key identifiers such as ABB Unitrol 1020 protection relay and compact generator protection controller are used throughout this description to emphasize core functionality and sourcing relevance.

Product Parameters
⚙️ Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Protection & Control Unit |
| Model | UNITROL 1020 |
| Part Number / Order Code | 3BHE030579R0006 / UNS 0119 |
| Protection Elements | Overcurrent, short circuit, earth fault, frequency, voltage |
| Measurement | Voltage, current, frequency measurements |
| Control Functions | Engine start/stop logic, breaker control |
| Digital Inputs | Multiple programmable digital inputs |
| Digital Outputs | Multiple relay outputs |
| Communication | Standard industrial protocols supported |
| Display | Local display for status & measurements |
| Mounting | Panel or enclosure mount |
Product Datasheet (Technical Overview)
📄 Datasheet Summary
| Feature | Description |
|---|---|
| Protection Coverage | Comprehensive protection for generator sets and plant equipment |
| Control Logic | Integrated programmable logic for start/stop and interlock functions |
| Monitoring | Real-time measurement of voltage, current, frequency |
| Event & Alarm | Event logging and alarm indication |
| Display Interface | Local display with menu navigation |
| Sensor Interfaces | Compatible with standard CTs & VTs |
| Environmental | Industrial rated operating conditions |
| Certification | Designed to ABB quality and protection standards |
Country of Origin
🌍 Origin:
The ABB UNITROL 1020 controller is manufactured under ABB’s global industrial automation quality system. Production is typically conducted at ABB industrial electronics manufacturing facilities, ensuring consistent product quality, durability, and compliance with protection and control system standards.
Usage Instructions
🔧 Operating and Installation Guidelines
- Mounting: Install the controller in a suitable panel or enclosure, ensuring access for wiring and display visibility.
- Power Supply: Provide the correct auxiliary supply voltage as specified in the product datasheet. Ensure proper grounding.
- Sensor Connections: Connect current transformers (CTs) and voltage transformers (VTs) to the designated terminals with correct polarity to guarantee accurate measurement.
- Input/Output Wiring: Connect digital inputs for sensor or switch status and digital outputs to circuit breakers, alarms, or indicators per system design.
- Parameter Configuration: Using the local display or compatible configuration tool, set system nominal values (voltage, current, frequency) and protection thresholds according to application requirements.
- Testing & Commissioning: Power up the system and verify proper operation of protection elements, control logic, and alarms before placing into full service. Review event logs to confirm expected behavior.
Frequently Asked Questions (Q&A)
Q1: What primary functions does the UNITROL 1020 provide?
A1: It offers protection, measurement, and control functions for generator and industrial power systems.
Q2: Can the UNITROL 1020 manage breaker control?
A2: Yes, it includes programmable control outputs for breaker or contactor operation.
Q3: Is parameter configuration done locally?
A3: Yes, through the built-in display interface, or via supported configuration software.
Q4: Does this unit support event logging?
A4: Yes, it maintains logs of alarms and key status changes for review.
Q5: Is the controller suitable for both standby and prime power installations?
A5: Yes, it is designed for flexible protection and control across various power system configurations.
More Similar Model Recommendations
🔁 Related ABB Protection & Control Units
| Model Number | Description |
|---|---|
| ABB UNITROL 1030 | Advanced protection and control relay |
| ABB UNITROL 1050 | Integrated logic and protection controller |
| ABB REL 511 | Compact protection relay |
| ABB REF615 | Generator protection relay |
| ABB PCM300 | Power quality and monitoring controller |
