Description
⚡ ABB REC603A1AAAG1A is a REC603 Wireless Controller designed for remote monitoring and control of secondary substations, including network disconnectors, load-break switches, and ring main units (RMUs). The exact ordering code specifies a REC603 Version 1.0 configuration with a wide-range AC/DC power supply, extensive binary I/O, Ethernet and serial communications, IEC 60870 protocols, and GPRS wireless communication.
The controller provides an interface between field switching equipment and a remote SCADA system, supporting status acquisition, remote switching commands, electrical measurements, battery management, and wireless data transmission. ABB lists the REC603 as a legacy product that has not been active since 2016.

REC603A1AAAG1A
📋 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | ABB |
| Model | REC603 |
| Ordering Code | REC603A1AAAG1A |
| Series | ABB REC601/603 Wireless Controller |
| Product Name | Wireless Controller / Remote Terminal Controller |
| Version | 1.0 |
| Power Supply | 85–200 VDC / 90–264 VAC with 24 VDC battery charger |
| Inputs / Outputs | 15 Binary Inputs + 10 Binary Outputs |
| Analog Measurement | 3 CT Inputs + 1 VT Input |
| Communication Interface | Ethernet 10/100Base-T + RS232 + selectable RS232/422/485 |
| Communication Protocols | IEC 60870-5-101 / IEC 60870-5-104 |
| Wireless Communication | GPRS + CSD |
| Mounting | DIN Rail Mounting Kit |
| Condition | Used / Surplus — verify actual unit condition |
The listed I/O and communication configuration corresponds to ABB’s published REC603A1AAAG1A ordering-code definition.
🔧 Key Features
- 📡 Built-in GPRS wireless communication
- ⚡ Remote control and monitoring of secondary distribution substations
- 🔌 15 binary inputs and 10 binary outputs
- 📊 Three CT measurement inputs and one VT input
- 🌐 10/100Base-T Ethernet interface
- 🔄 RS232 and selectable RS232/422/485 serial communication
- 🛰️ IEC 60870-5-101 and IEC 60870-5-104 communication
- 🔋 Integrated battery charging and battery-management functions
- 🌡️ Support for heater control and temperature-related applications
- 🧩 DIN-rail installation for compact substation control equipment
ABB documentation describes REC603 applications including remote control of RMUs and distribution switching equipment, with battery charging, actuator protection, and heater control functions.
🔗 System Integration
The REC603A1AAAG1A functions as a compact RTU/wireless controller between secondary-substation equipment and the utility SCADA system. Field binary signals can be used for switch and disconnector status, while output channels provide remote control functions. CT and VT inputs provide electrical measurements for monitoring applications.
The Ethernet and serial interfaces support local/system communication, while the integrated GPRS interface enables remote communication through public cellular infrastructure using IEC 60870 protocols.
For replacement applications, verify the complete ordering code, firmware version, I/O configuration, communication interfaces, auxiliary supply, SIM/GPRS requirements, terminal wiring, and existing SCADA protocol configuration before installation.
❓ FAQ
Q1: What is ABB REC603A1AAAG1A?
A: It is an ABB REC603 Wireless Controller with ordering code REC603A1AAAG1A.
Q2: What is the main application?
A: REC603 is designed for remote monitoring and control of secondary distribution substations, including RMUs, disconnectors, and load-break switches.
Q3: What power supply does this version use?
A: The A1AAAG1A configuration specifies 85–200 VDC or 90–264 VAC, with a 24 VDC battery charger.
Q4: Does it support wireless communication?
A: Yes. This ordering configuration uses GPRS with CSD (GSM Data) wireless communication.
Q5: What protocols are supported?
A: The documented configuration supports IEC 60870-5-101 and IEC 60870-5-104.
Q6: Is REC603 still an active ABB product?
A: ABB currently classifies REC603 as a legacy product and states that it has not been an active product since 2016.
🔑 Product Keywords
ABB REC603, REC603A1AAAG1A, ABB Wireless Controller, ABB REC603 Wireless Controller, ABB Remote Terminal Unit, ABB RTU, ABB GPRS Controller, ABB Distribution Automation, ABB Substation Controller, ABB RMU Controller, IEC 60870-5-104, IEC 60870-5-101, ABB SCADA Controller
For additional ABB PLC, DCS, protection relay, RTU, and industrial automation products: New PLC DCS
🔟 Other ABB Models to Consider
- ABB REC601 – Wireless Controller
- ABB ARC600 – Wireless Controller
- ABB REJ603 – Self-Powered Protection Relay
- ABB REF615 – Feeder Protection & Control Relay
- ABB REF601 – Feeder Protection Relay
- ABB REC615 – Bay Control and Protection Relay
- ABB REF620 – Feeder Protection and Control
- ABB RER601 – Wireless Communication Router
- ABB RER620 – Communication Interface
- ABB RTU560 – Remote Terminal Unit
For replacement projects, match the complete ABB ordering code and verify I/O, communications, power supply, firmware, and field wiring before commissioning.
