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The RDCU-12C is an advanced digital control unit and relay designed for industrial automation, power distribution, and process control applications. It belongs to ABB’s RDCU series, offering high reliability, programmable control, and protection for electrical systems.
This control unit integrates relay outputs with logic control, time-delay functions, and load monitoring features in a compact module. Its robust design ensures consistent operation in industrial environments, even under fluctuating voltage, temperature variations, and heavy load conditions. RDCU-12C is ideal for control panels requiring intelligent automation solutions and precise load management.
| Parameter | Description |
|---|---|
| Model | RDCU-12C |
| Part Number | 3AUA0000036521 |
| Function | Digital Control Unit / Relay |
| Input Voltage | 24–240 V AC/DC |
| Output Type | SPDT Relay Contacts |
| Switching Current | 10 A per contact |
| Control Functions | ON/OFF, Time Delay, Load Monitoring, Logic Control |
| Operating Frequency | 50/60 Hz |
| LED Indicators | Power, Status, Fault |
| Operating Temperature | -20°C to 60°C |
| Protection Class | IP20 |
| Dimensions (WxHxD) | 110 × 85 × 75 mm |
| Weight | 0.68 kg |
| Mounting | DIN Rail / Panel |
| Certifications | CE, UL |
The RDCU-12C is suitable for a wide range of industrial and automation applications:
Control and automation of industrial motors, pumps, and actuators.
Load monitoring and protection in electrical distribution panels.
Time-delay and sequential operation for automated industrial processes.
Safety signaling and alarm management in industrial facilities.
Integration into compact modular control panels for logic-based control.
Switching of high-current loads with SPDT relay outputs.
High-Current Capacity: Supports up to 10 A per relay contact.
Multi-Function Control: Provides ON/OFF, time-delay, load monitoring, and logic control.
Compact and Robust Design: Suitable for industrial control panels with limited space.
LED Indicators: Shows power, operational status, and fault conditions clearly.
Wide Voltage Range: Operates on 24–240 V AC/DC.
Temperature Resistant: Operates reliably from -20°C to 60°C.
Flexible Mounting Options: DIN rail and panel mounting supported.
Industrial Durability: Long-term stability and performance in harsh environments.
Safety Compliance: CE and UL certified for industrial safety standards.
Versatile Applications: Compatible with motors, pumps, actuators, and control systems.
Brand: ABB
Series: RDCU Series (Digital Control Units and Relays)
| Model | Input Voltage | Output Type | Switching Current | Dimensions (mm) | Weight (kg) | Key Feature |
|---|---|---|---|---|---|---|
| RDCU-01C | 24–240 V AC/DC | SPDT Relay | 5 A | 90 × 70 × 60 | 0.48 | Basic control unit |
| RDCU-02C | 24–240 V AC/DC | SPDT Relay | 5 A | 95 × 75 × 65 | 0.52 | Load monitoring and time delay |
| RDCU-03C | 24–240 V AC/DC | DPDT Relay | 5 A | 100 × 80 × 70 | 0.55 | Multi-functional relay unit |
| RDCU-04C | 24–240 V AC/DC | SPDT Relay | 10 A | 100 × 80 × 70 | 0.57 | High-current control |
| RDCU-05C | 24–240 V AC/DC | DPDT Relay | 10 A | 105 × 85 × 72 | 0.60 | High-current dual-contact unit |
| Model | Voltage | Function | Dimensions (mm) | Weight (kg) | Key Feature |
|---|---|---|---|---|---|
| RELAY-01 | 24–240 V AC/DC | General Purpose Relay | 80 × 60 × 50 | 0.40 | Compact control relay |
| RELAY-02 | 24–240 V AC/DC | Time Delay Relay | 90 × 70 × 60 | 0.45 | Delayed switching function |
| RELAY-03 | 24–240 V AC/DC | Safety Relay | 100 × 80 × 65 | 0.55 | Emergency stop and safety applications |
| RELAY-04 | 24–240 V AC/DC | Monitoring Relay | 95 × 75 × 65 | 0.50 | Load monitoring |
| RELAY-05 | 24–240 V AC/DC | High Current Relay | 110 × 90 × 70 | 0.60 | High-current switching |
Q1: What is the input voltage range for RDCU-12C?
A1: 24–240 V AC/DC.
Q2: What type of relay output does it provide?
A2: SPDT relay contacts.
Q3: What is the maximum switching current?
A3: 10 A per contact.
Q4: Does it support load monitoring and logic control?
A4: Yes, it supports ON/OFF, time-delay, load monitoring, and basic logic control.
Q5: Can it operate in industrial temperature ranges?
A5: Yes, it operates from -20°C to 60°C.
Q6: Are there visual indicators for status and fault conditions?
A6: Yes, LED indicators display power, operational status, and fault conditions.
Q7: Can RDCU-12C be mounted on DIN rails?
A7: Yes, it supports both DIN rail and panel mounting.
Q8: What are its dimensions and weight?
A8: 110 × 85 × 75 mm, 0.68 kg.
Q9: Is RDCU-12C certified for industrial safety?
A9: Yes, CE and UL certified.
Q10: Can it be used to control motors, pumps, and actuators?
A10: Yes, it is suitable for controlling various industrial loads.