Why Choose the ABB CP-B 24/20.0 Buffer Module?
The ABB CP-B 24/20.0 (1SVR427060R2000) is a high-performance 24 V DC buffer module designed to maintain a continuous power supply to industrial control and automation equipment during short-term supply interruptions. As part of the reliable ABB CP-B buffer module series, it uses advanced ultra-capacitor technology to provide temporary backup power without the maintenance requirements associated with conventional battery-based systems.
This industrial buffer module helps protect sensitive control equipment against unexpected voltage drops and power interruptions, reducing the risk of PLC resets, machine stoppages and production downtime. Its maintenance-free energy storage technology, integrated status monitoring and expandable buffering capacity make it particularly suitable for demanding industrial automation applications.
With a 24 V DC rated input and output voltage, a 20 A rated output current and an internal energy storage capacity of 8,000 Ws, the CP-B 24/20.0 provides reliable short-term power continuity for industrial control systems. Its compact DIN rail-mounted design enables straightforward installation inside electrical control cabinets, while compatibility with additional CP-B EXT.2 extension modules allows increased buffering duration when required.
Key Advantages
- Reliable 24 V DC buffer module designed to maintain power during short-term supply interruptions.
- 20 A rated output current suitable for industrial automation and control equipment.
- 480 W rated output power for demanding DC control applications.
- 8,000 Ws internal energy storage provides temporary backup power when the primary supply fails.
- Advanced ultra-capacitor technology provides maintenance-free energy storage without conventional batteries.
- Typical buffering time of more than 15 s at full rated load.
- Expandable buffering capacity using up to two compatible ABB CP-B EXT.2 extension modules.
- Integrated relay signalling contacts support remote monitoring of input supply, buffering status and faults.
- Four LED status indicators provide clear visual information about operating conditions.
- Dedicated SHUT-DOWN control input enables controlled disabling of the buffering function.
- Wide -40 to +60 °C operating temperature range supports demanding industrial environments.
- Compact DIN rail mounting simplifies installation within electrical control panels.
Key Features
- ABB CP-B buffer module series.
- 24 V DC nominal input voltage.
- 23.4–27.4 V DC input voltage range.
- 24 V DC rated output voltage.
- 20 A rated input and output current.
- 480 W rated output power.
- 8,000 Ws internal ultra-capacitor energy storage.
- Automatic buffering during interruptions to the primary DC power supply.
- Typical charging time of less than 135 s at full rated load.
- Typical buffering time exceeding 15 s at 100% rated load.
- Support for up to two CP-B EXT.2 extension modules to increase stored energy.
- Integrated INPUT OK and BUFFER STATUS normally open relay contacts.
- Integrated FAILURE change-over relay contact.
- Four LED indicators for operating-state monitoring.
- SHUT-DOWN control input for selective disabling of buffering.
- Maintenance-free operation with no battery deep-discharge concerns.
- IP20 protection rating for installation within suitable industrial enclosures.
- DIN rail-mounted industrial housing.
Technical Specifications
- Manufacturer: ABB
- Series: CP-B Buffer Modules
- Model: CP-B 24/20.0
- ABB order code: 1SVR427060R2000
- ABB product group: 310905-Power Supplies
- Product type: Ultra-capacitor-based DC buffer module
- Function: Short-term DC power supply buffering
- Rated input voltage: 24 V DC
- Input voltage range: 23.4–27.4 V DC
- Rated output voltage: 24 V DC
- Rated input current: 20 A
- Rated output current: 20 A
- Rated output power: 480 W
- Internal energy storage: 8,000 Ws
- Energy storage technology: Ultra-capacitors
- Typical charging time: Less than 135 s at 100% load current
- Typical buffering time: More than 15 s at 100% load current
- Extension capability: Up to 2 CP-B EXT.2 extension modules
- Extension module energy storage: 2,000 Ws per CP-B EXT.2 module
- Buffering operation: Automatic during input supply interruption
- Status indication: 4 LEDs
- Input monitoring contact: INPUT OK, normally open
- Buffer monitoring contact: BUFFER STATUS, normally open
- Fault monitoring contact: FAILURE, change-over
- Control input: SHUT-DOWN
- Operating temperature: -40 to +60 °C
- Storage temperature: -40 to +60 °C
- Protection rating: IP20
- Pollution degree: 2
- Mounting type: DIN rail mounting
- Terminal type: Screw terminals
- Dimensions (H × W × D): 198 × 84 × 216 mm
- Net weight: Approx. 2.2 kg
- EAN: 4016779782579
Reliable 24 V DC Power Buffering for Industrial Automation
Industrial automation systems rely on stable DC power supplies to ensure continuous operation of PLCs, industrial controllers, communication equipment and other sensitive electronic devices. Even a brief interruption to the supply voltage can cause unexpected equipment resets, production stoppages or interruptions to automated processes. The ABB CP-B 24/20.0 buffer module helps minimise these risks by temporarily supplying stored electrical energy whenever the primary 24 V DC supply is interrupted.
During normal operation, the module charges its internal ultra-capacitors while allowing the connected equipment to receive power from the primary DC supply. When the input voltage is interrupted, the stored energy supports the connected load for a limited period. At its full 20 A rated load, the module provides a typical buffering time of more than 15 s, with longer buffering durations available at reduced load currents.
For applications requiring additional backup time, the CP-B 24/20.0 supports connection of up to two ABB CP-B EXT.2 extension modules. Each extension module provides an additional 2,000 Ws of energy storage, increasing the available buffering capacity without introducing conventional battery maintenance requirements.
The integrated relay contacts and LED indicators provide useful diagnostic information for industrial control systems, while the dedicated SHUT-DOWN input allows the buffering function to be selectively disabled. Combined with its robust construction, wide operating temperature range and DIN rail-mounted design, the CP-B 24/20.0 is an effective solution for improving the resilience of industrial DC power distribution systems.
Typical Applications
- Industrial PLC and automation controller backup power.
- 24 V DC control systems requiring short-term supply continuity.
- Automated manufacturing and production machinery.
- Industrial control cabinets and electrical distribution panels.
- Packaging machinery and material handling equipment.
- Industrial communication networks and control electronics.
- Process automation and instrumentation systems.
- Factory automation equipment requiring protection against voltage interruptions.
- Renewable energy and solar-powered industrial control systems.
- OEM machinery and industrial equipment incorporating 24 V DC power supplies.
