CIB.S — Switched Rectifier
Modular switched industrial rectifier for direct-current systems.
- Voltage
- 24 / 48 / 125 VDC
- Modular capacity
- Up to 12 RUs RM
- Format
- Floor-standing industrial enclosure

The data shown represents the family’s range and possibilities. The equipment’s final configuration is defined according to the project’s requirements.
- ≥ 0.99
- Power factor
- ≥ 92%
- Efficiency
- ≤ 5%
- THDi
- ≤ 1%
- Regulation
- Up to 12 RUs
- Modular architecture
About CIB.S
The CIB.S is NPT’s industrial switched rectifier, designed to deliver stable and reliable direct current in systems that require high power density and energy efficiency.
The modular architecture allows combining multiple rectifier units and structuring redundant configurations according to the project’s requirements. In redundant architectures, the configuration can allow intervention on units without taking down the system’s entire capacity.
Technical highlights
- Modular architecture with rectifier units (RUs) that can be combined according to the project
- High efficiency with high-frequency switched technology
- Microprocessor-based supervision with color display and local alarms
- Rugged industrial enclosure for substation and plant environments
Redundant architectures can allow intervention on modules without taking down the system’s entire capacity, depending on the equipment’s configuration.
Modularity that follows the requirement.
The CIB.S uses switched rectifier units that can be combined to meet different capacities and architectures. The modularity simplifies sizing and allows structuring redundant configurations according to the project’s requirements.
In configurations with multiple modules, current sharing (±5% between rectifier units) contributes to a balanced load distribution among the units.
Modules for different voltage and power levels
Select the system’s rated voltage to see the available RM rectifier units.
Unidades retificadoras — 24 VDC
Faixa de saída: 21–36 VDC
- RM824A800 W
- RM1524A1.500 W
Unidades retificadoras — 48 VDC
Faixa de saída: 42–60 VDC
- RM1848A1.800 W
- RM3048A3.000 W
Unidades retificadoras — 125 VDC
Faixa de saída: 90–155 VDC
- RM18110A1.800 W
- RM30110A3.000 W
AC supply flexibility
Configurações de entrada CA
- 220 VAC single-phase
- 220 VAC three-phase
- 380 VAC three-phase + neutral
- 440 VAC three-phase
- 460 VAC three-phase
- Other configurations upon request
The CIB.S can be configured for different AC supply levels according to the project, extending its adaptability to industrial installations and existing auxiliary systems.
- Tensão nominal
- 220 VAC
- Faixa de operação
- 90–300 VAC (power derating below 175 VAC)
- Frequência
- 50/60 Hz (range 45–65 Hz)
Stable DC voltage for critical loads
- DC voltage regulation ≤ 1%, for stable load and battery bank supply.
- Ripple below 50 mVrms (3.4 kHz to 150 kHz) and below 20 mVrms (50 kHz to 30 MHz), with a limit of 200 mVpp.
- Balanced current distribution among rectifier modules.
- Continuous supervision of the system in operation.
Protection built into the system
Entrada CA
- Thermomagnetic circuit breakerstandard
- Varistor or Class II surge protectorper specification
- AC overvoltage and undervoltage supervisionstandard
Saída CC
- Thermomagnetic circuit breaker or NH fuseper specification
- Class II surge protectorstandard
- LVD for battery or loadoptional
- Voltage-drop diode unit (UDQ)optional
- Blocking diodeoptional
- Ground fault detectionper specification
- DC overvoltage protectionstandard
The system tells you what’s happening.
- 1.77" color TFT display
- 3 keys for configuration and display
- Green LED — power on
- Yellow LED — non-urgent alarm
- Red LED — urgent alarm
- 90 dB audible alarm
Integration into the operating environment
The CIB.S provides communication interfaces for supervision, configuration, and integration of the rectifier into the customer’s operation and maintenance environments.
Still evaluating the technology? See the technical selection criteria.
Open the guideOther rectifiers in the family

CIB.SP
Compact, portable version of the NPT switched rectifier, with up to 12 kW and a 19" rack alternative.
- Voltage
- 24 / 48 / 125 VDC
- Power
- Up to 12 kW

CIB.T
Industrial thyristor-based rectifier for high-power direct-current systems, with up to 2,000 A.
- Voltage
- 24 / 48 / 110 / 125 / 220 VDC
- Current
- Up to 2,000 A
Need to specify the CIB.S?
Send us the voltage, current, and application of your project. Our technical team will get back to you with the right configuration for your direct-current system.




