Protection and Control
CBS-400B
Station with 4 programmable residual current relays, type B
Code: P12721
Pre-alarm relay: Yes
Communications: RS-485
Power supply: 230 Vac
Delay: 0,1 … 5 s, INS, SEL
Overview
The residual current current intensity monitoring and protection relay (IEC 62020), compatible with the WGB series, for type B loads (IEC 60755) and with 4 totally independent channels.
Key Features
- Electronic relay with relay output (up to 4 channels)
- Measures in alternating, continuous or mixed current (Type B according to IEC 60755)
- It measures and displays the current intensity of each of the 4 channels independently, through the connection to the WGB-series residual current transformer.
- Fully programmable with display showing instantaneous leakage current in real time on a high-contrast backlight display (display turns red when the relay trips).
- Integrated RS-485 (Modbus) communications
- Pre-alarm relay
- Event log
- Remote control input.
Technical Specifications
AC power supply
| Nominal voltage | 230 V ~ (±15%) |
|---|---|
| Frequency | 50 … 60 Hz |
| Consumption | 11 VA |
| Installation category | CAT III 300 V |
Digital transistor outputs
| Type | Optocoupled |
|---|---|
| Maximum voltage | 230 V ~ |
| Maximum current | 0.1 A |
Digital relay outputs
| Quantity | 4 |
|---|---|
| Maximum open contact voltage | 230 V ~ |
| Maximum current | 6 A |
| Electrical life | 60 × 10³ (250 V ~ / 5 A) |
| Mechanical life | 10 × 10⁶ |
| Maximum switching capacity | 1500 VA |
Digital inputs
| Type | Potential-free contact |
|---|---|
| Input/output insulation | 5.3 kV |
| Input impedance | 2 kΩ |
Serial communication
| Technology / Type | RS-485 |
|---|---|
| Protocol | Modbus/RTU |
User interface
| Display type | LCD (negative) |
|---|---|
| LED | 2 |
| Keyboard | 3 keys |
Environmental characteristics
| Working temperature | -10 … +50 °C |
|---|---|
| Storage temperature | -20 … +70 °C |
| Relative humidity (without condensation) | 5 … 95% |
| Protection class | IP30, IP40 (Front) |
Mechanical characteristics
| Envelope | Self-extinguishing V0 plastic |
|---|---|
| Weight (kg) | 0,188 |
| Size (width × height × depth) | 52.5 × 118 × 74 mm |
Differential protection
| Delay time (t∆) | INS – [S] – 0.1 – 0.2 – 0.3 – 0.4 – 0.5 – 0.8 – 1 – 3 – 5 s |
|---|
Standards
| Standards | IEC 60947-2-M, Measurement conditions for type B waveforms specified in IEC 60755, UNE-EN 60068-2-1, UNE-EN 60068-2-2, UNE-EN 60068-2-78 |
|---|---|
| Electrical safety, Contamination level/class | 2 |
| Electrical safety, Maximum height (m) | 2000 |
Applications
Residual current protection or monitoring of single-phase or three-phase electrical loads in alternating current with continuous components, with frequencies up to 2 kHz, such as:
– Variable speed drives
– UPS
– Photovoltaic Installations
– Electric Vehicle Charging
– Active filters
Need more detailed information?
View the official product documentation,
manuals and technical resources.
