ABB 2CSB204001R1250 DDA204 AC-25/0.03 4-Pole 25A 30mA Type AC Residual Current Device Block

The DDA204 AC-25/0.03 has a 4-pole configuration, a 25 A rated current and a 30 mA rated residual operating current. It uses Type AC residual current detection and is rated for 230/400 V electrical systems. ABB identifies the product with order number 2CSB204001R1250. :contentReference[oaicite:1]{index=1}

Product Identification

• Manufacturer: ABB
• Part Number: 2CSB204001R1250
• Product Type: DDA204 AC-25/0.03
• Product Family: DDA200
• Product Category: Residual Current Device Block
• Number of Poles: 4
• Rated Current: 25 A
• Rated Residual Current: 30 mA
• Residual Current Type: AC
• Rated Voltage: 230/400 V
• Rated Insulation Voltage: 500 V
• Rated Impulse Withstand Voltage: 4 kV
• Operating Characteristic: Instantaneous
• Mounting: DIN Rail assembly with compatible circuit breaker
• Protection Rating: IP2X
• Rated Frequency: 50–60 Hz

ABB DDA204 AC-25/0.03 Overview

ABB 2CSB204001R1250 is a residual current device block rather than a standalone miniature circuit breaker. The DDA200 series is designed to be mechanically and electrically assembled with compatible ABB S200 series MCBs.

When correctly combined with a compatible circuit breaker, the DDA204 adds residual-current protection to the associated overcurrent protection system. ABB specifically describes the DDA200 series as suitable for assembly with S200 series miniature circuit breakers. :contentReference[oaicite:2]{index=2}

DDA204 Product Configuration

The DDA204 AC-25/0.03 uses a 4-pole configuration. The four-pole arrangement is intended for circuits where the associated protection system requires four-pole residual-current monitoring.

The ABB catalog identifies the 25 A, 30 mA version as DDA204 AC-25/0.03 and assigns the product code 2CSB204001R1250. :contentReference[oaicite:3]{index=3}

25A Rated Current

The rated current of ABB 2CSB204001R1250 is 25 A. This rating defines the nominal current associated with the residual-current device block.

When the DDA204 is assembled with a compatible S200 circuit breaker, the rated current and protection characteristics of the complete combination must be considered together. The circuit breaker selection should correspond to the electrical load and conductor capacity.

30mA Residual Current Sensitivity

The DDA204 AC-25/0.03 has a rated residual operating current of 30 mA. This sensitivity is an important identification characteristic of the product and distinguishes it from DDA204 variants rated at 100 mA, 300 mA, 500 mA or higher residual-current values.

ABB documentation lists the 30 mA version as DDA204 AC-25/0.03 with order number 2CSB204001R1250. :contentReference[oaicite:4]{index=4}

Type AC Residual Current Detection

ABB 2CSB204001R1250 uses Type AC residual-current detection. This type is intended for detecting sinusoidal alternating residual currents under the applicable operating conditions.

The product documentation specifically identifies the leakage-current type as AC and the residual-current type as AC. :contentReference[oaicite:5]{index=5}

The residual-current type should be selected according to the characteristics of the connected electrical equipment and the requirements of the installation.

Combination with S200 Circuit Breakers

One of the defining characteristics of ABB 2CSB204001R1250 is that it is designed for assembly with compatible ABB S200 series miniature circuit breakers.

The DDA200 residual-current device block adds differential protection to the associated circuit breaker. This modular arrangement allows the overcurrent protection and residual-current protection functions to be combined within an ABB protection system. :contentReference[oaicite:6]{index=6}

ABB documentation also identifies compatibility with S200, S200 L, S200 M and S200 P series circuit breakers, depending on the specific DDA configuration and application requirements. :contentReference[oaicite:7]{index=7}

230/400V Rated Voltage

ABB 2CSB204001R1250 has a rated voltage of 230/400 V. The same value is specified for the rated operational voltage in the available product documentation. :contentReference[oaicite:8]{index=8}

The actual electrical system configuration should be verified before installation to ensure that the complete MCB and RCD assembly is suitable for the intended circuit.

500V Insulation Voltage

The rated insulation voltage of the DDA204 AC-25/0.03 is 500 V. This specifies the insulation reference level of the device under the applicable technical conditions. :contentReference[oaicite:9]{index=9}

4kV Impulse Withstand Voltage

The product has a rated impulse withstand voltage of 4 kV. This parameter defines the specified ability of the insulation system to withstand transient impulse voltages under the applicable test conditions. :contentReference[oaicite:10]{index=10}

Instantaneous Operating Characteristic

ABB technical data identifies the DDA204 AC-25/0.03 with an instantaneous operating characteristic. The residual-current protection is intended to respond according to the specified operating characteristics when the residual current reaches the applicable threshold.

The associated MCB provides the relevant thermal and magnetic overcurrent protection characteristics for the complete protection assembly.

Electrical Protection Function

The primary purpose of ABB 2CSB204001R1250 is residual-current protection. ABB describes the DDA200 series as providing protection against the effects of sinusoidal alternating earth-fault currents, protection against indirect contact and additional protection against direct contact when the sensitivity is 30 mA. :contentReference[oaicite:11]{index=11}

The DDA204 should therefore be considered as one component of a complete protection arrangement rather than as an independent replacement for a conventional MCB.

Technical Specification Summary

Dimensions and Mechanical Characteristics

The DDA204 configuration occupies a larger modular width than a typical single circuit breaker because it is designed as a four-pole residual-current device block and is mechanically assembled with the associated MCB.

ABB product data gives overall dimensions of approximately 105 × 93 × 76 mm for the DDA204 configuration. :contentReference[oaicite:12]{index=12}

The product information also identifies the DDA204 as a four-pole device with approximately six modular spacings when considered as the complete block arrangement. :contentReference[oaicite:13]{index=13}

Terminal Connection

The available technical data specifies a connection capacity of approximately 16 mm² for both rigid and flexible conductors under the applicable connection conditions. :contentReference[oaicite:14]{index=14}

The conductor type, cross-section and terminal tightening requirements should be verified against the applicable ABB installation instructions for the complete DDA200 and S200 assembly.

Operating Temperature

The product documentation specifies an ambient operating temperature range of approximately -25°C to +55°C. :contentReference[oaicite:15]{index=15}

The installation environment should remain within the specified operating conditions. Cabinet temperature, ventilation and the number of adjacent devices can also affect the thermal conditions of the complete assembly.

Application Areas

ABB 2CSB204001R1250 is designed for use in electrical protection systems where residual-current protection is required in combination with compatible ABB circuit breakers.

ABB identifies the DDA200 series for residential, commercial and industrial applications. :contentReference[oaicite:16]{index=16}

Residential Electrical Systems

In residential distribution systems, a DDA204 residual-current block can be used with a compatible ABB S200 series MCB to provide residual-current protection for an appropriately designed circuit.

The 30 mA sensitivity is a key characteristic when the installation design requires this level of residual-current protection.

Commercial Distribution Systems

In commercial installations, the DDA204 can be integrated into modular distribution equipment where four-pole residual-current protection is required.

Its modular design allows it to form part of an ABB protection system together with a compatible miniature circuit breaker.

Industrial Electrical Systems

The DDA204 can also be used in suitable industrial electrical distribution and control applications.

When applied in an industrial system, the rated current, residual-current sensitivity, residual-current type and characteristics of the associated MCB should all be evaluated against the circuit requirements.

Product Family Variants

The ABB DDA204 family includes multiple variants with different rated currents and residual-current sensitivities. The 30 mA versions include 25 A, 40 A and 63 A configurations. ABB documentation identifies the 25 A version as DDA204 AC-25/0.03 with order number 2CSB204001R1250. :contentReference[oaicite:17]{index=17}

Other DDA204 variants use residual-current ratings such as 100 mA, 300 mA, 500 mA, 1 A and 2 A. The complete part number must therefore be checked carefully when identifying or replacing the device. :contentReference[oaicite:18]{index=18}

Product Identification and Ordering

The primary ABB identification number is 2CSB204001R1250, while the corresponding product designation is DDA204 AC-25/0.03.

ABB’s product catalog directly associates this order code with the DDA204 four-pole, 25 A, 30 mA Type AC residual-current device block. :contentReference[oaicite:19]{index=19}

The product EAN is 8012542793908. :contentReference[oaicite:20]{index=20}

Compatibility Verification

Before selecting ABB 2CSB204001R1250 for an installation or replacement application, the following parameters should be verified:

• ABB part number: 2CSB204001R1250
• Product type: DDA204 AC-25/0.03
• Four-pole configuration
• Rated current: 25 A
• Residual current type: AC
• Rated residual current: 30 mA
• Rated voltage: 230/400 V
• Compatibility with the selected ABB S200 series MCB
• Rated insulation voltage: 500 V
• Rated impulse withstand voltage: 4 kV
• Applicable installation standard

Because the DDA204 is an RCD block intended for assembly with a compatible circuit breaker, compatibility should be checked for the complete MCB and DDA combination rather than evaluating the RCD block alone.

Installation Considerations

ABB 2CSB204001R1250 should be installed and assembled according to the applicable ABB installation instructions. The associated S200 series circuit breaker must be an approved compatible type for the DDA204 configuration.

The rated current of the complete protection arrangement must be coordinated with the electrical load and conductor capacity. The 30 mA residual-current sensitivity should also correspond to the intended protection requirements.

Before energizing the installation, the correct phase and neutral connections, mechanical coupling and protective-device configuration should be verified.

Maintenance Considerations

Maintenance inspection can include checking the mechanical assembly, terminal connections, visible condition and operation of the complete protection device.

The residual-current test function should be checked according to the applicable installation and maintenance procedure.

If residual-current protection operates repeatedly, the underlying leakage-current condition should be investigated rather than repeatedly resetting the device without determining the cause.

Product Identification for Inventory

For industrial inventory records, the recommended product description is ABB 2CSB204001R1250 DDA204 AC-25/0.03 4-Pole 25A 30mA Type AC Residual Current Device Block.

Additional searchable descriptions can include ABB DDA204 AC-25/0.03, ABB 2CSB204001R1250 RCD Block, ABB DDA200 25A 30mA RCD, ABB 4 Pole 25A RCD Block and ABB Type AC 30mA Residual Current Device.

The complete part number 2CSB204001R1250 should remain the primary identification reference for product matching, inventory management and technical documentation.

Conclusion

ABB 2CSB204001R1250 is the DDA204 AC-25/0.03 residual current device block from the ABB DDA200 series. It is a four-pole Type AC RCD block with a 25 A rated current and 30 mA residual-current sensitivity.

The device is designed to be assembled with compatible ABB S200 series miniature circuit breakers. Its main electrical characteristics include a 230/400 V rated voltage, 500 V rated insulation voltage and 4 kV rated impulse withstand voltage. :contentReference[oaicite:21]{index=21}

The recommended technical product name is ABB 2CSB204001R1250 DDA204 AC-25/0.03 4-Pole 25A 30mA Type AC Residual Current Device Block. When selecting or replacing this component, the complete ABB part number, pole configuration, rated current, residual-current sensitivity, Type AC characteristic and compatibility with the associated S200 circuit breaker should be verified.