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- ABB
- RLDA 103
- Measurement Unit
- Sweden
- 158 × 102 × 126 mm
- 1.8kg
- RK638005-BA
- Xiamen, China
- New & In Stock
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ABB RLDA 103 (RK638005-BA) — Full Technical Overview
1. Product Overview
The RLDA 103 (RK638005-BA) is a dedicated measurement unit designed for industrial protection and automation systems. It functions as a core component within busbar protection and control systems, capturing and processing electrical signals to provide accurate monitoring for protection logic.
This unit is suitable for industrial environments where precision, fast response, and reliability are critical. Its compact, rugged design allows integration into protection panels and control cabinets for long-term operation.
2. Brand
| Item | Details |
|---|---|
| Brand | ABB |
| Industry | Power Systems & Industrial Automation |
| Product Type | Measurement Unit |
3. Product Series
| Item | Details |
|---|---|
| Series | REB 103 Protection System |
| Category | Measurement Unit |
| System Compatibility | REB 103 Busbar Protection System |
4. Technical Specifications
| Parameter | Specification |
|---|---|
| Model | RLDA 103 / RK638005-BA |
| Product Type | Measurement Unit |
| Function | Signal acquisition and processing for protection logic |
| System Compatibility | REB 103 protection system |
| Measurement Accuracy | High-precision electrical signal processing |
| Power Supply | Standard industrial voltages |
| Operating Temperature | -25°C to +60°C |
| Storage Temperature | -40°C to +70°C |
| Design | Compact, rugged for industrial use |
| Mounting | Panel or cabinet installation |
| Dimensions (mm) | 158 × 102 × 126 |
| Weight (kg) | 1.8 ( ) |
5. Product Description
The RLDA 103 is a measurement module used within protection systems to acquire electrical signals such as current and voltage. It converts these signals into precise data for protection relays and control units, ensuring quick detection of abnormal conditions such as overloads or faults.
Its industrial-grade construction provides reliability in environments with vibration, temperature variations, and electrical noise. The modular design simplifies replacement and integration into larger protection systems.
6. Applications
This unit is commonly used in:
-
Busbar protection in substations
-
Industrial power distribution systems
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High-voltage power networks
-
Substation automation and monitoring
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Energy and utility infrastructure
-
Critical industrial facilities
It is particularly effective in applications where signal accuracy directly impacts system safety.
7. Product Advantages
1. High Measurement Accuracy
Ensures reliable detection and control in protection systems.
2. Seamless System Integration
Designed for full compatibility with REB 103 systems.
3. Compact Design
Fits easily into control panels and cabinets.
4. Industrial Reliability
Resists temperature variations, vibration, and electrical interference.
5. Fast Response
Enables rapid detection of faults and abnormal conditions.
6. Easy Maintenance
Modular structure allows simple replacement and installation.
8. Recommended Models (Same Series / Related)
| Model | Series | Function | Application | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| RK638007-BA (RLHE 103) | REB 103 | Comparator Unit | Protection comparison | 338 × 282 × 206 | 8.5 ( ) |
| RK638006-AA (RLOE 100) | REB 103 | Diode Unit | Signal routing | 200 × 120 × 80 | 1.2 ( ) |
| RK638004-AA (RLCA 103) | REB 103 | Control Unit | Protection control | 220 × 150 × 90 | 1.5 ( ) |
| RK638002-AA (RLBA 103) | REB 103 | Interface Unit | Signal interface | 180 × 110 × 70 | 1.0 ( ) |
| RK638001-AA (RLGA 103) | REB 103 | Logic Unit | Protection logic | 200 × 130 × 85 | 1.4 ( ) |
9. Recommended Popular Models (Same Brand)
| Model | Type | Function | Voltage | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| ACS800-04 | Drive Unit | Industrial motor control | 380–480V | varies | — |
| ACS880-01 | Drive Unit | High-performance motor control | 380–500V | varies | — |
| ACS580-01 | Drive Unit | Energy-saving motor drive | 380–480V | varies | — |
| REF615 | Protection Relay | Feeder protection | 24–250V | 180 × 120 × 160 | 2.5 ( ) |
| REM615 | Motor Relay | Motor protection | 24–250V | 180 × 120 × 160 | 2.5 ( ) |
10. FAQ (10 Q&A)
Q1: What is the main function of RLDA 103?
A: It measures electrical signals and provides accurate data to protection systems.
Q2: Which system is it designed for?
A: The REB 103 busbar protection system.
Q3: What types of signals does it process?
A: Current and voltage signals in power systems.
Q4: Is it suitable for high-voltage systems?
A: Yes, it is used in high-voltage protection applications.
Q5: What is the operating temperature range?
A: From -25°C to +60°C.
Q6: How is it installed?
A: Mounted inside protection panels or control cabinets.
Q7: What makes it reliable?
A: Industrial-grade components and rugged design ensure stability.
Q8: Does it require calibration?
A: Periodic checks may be needed depending on system standards.
Q9: Can it be replaced easily?
A: Yes, its modular design allows simple replacement.
Q10: Which industries use this product?
A: Power utilities, substations, and industrial energy distribution.