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

The device features a four-pole configuration, a rated current of 25 A and a rated residual current of 30 mA. ABB product information identifies the residual current type as AC and the product ID as 2CSB204001R1250. :contentReference[oaicite:1]{index=1}

Product Identification

• Manufacturer: ABB
• Product ID: 2CSB204001R1250
• Extended Product Type: DDA204 AC-25/0.03
• Product Series: 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 Operational Voltage: 230/400 V
• Rated Insulation Voltage: 500 V
• Rated Impulse Withstand Voltage: 4 kV
• Rated Frequency: 50/60 Hz
• Mounting System: DIN Rail / Modular Installation
• Standard: IEC/EN 61009 Annex G
• Product Net Weight: Approximately 173 g

ABB DDA204 AC-25/0.03 Overview

ABB 2CSB204001R1250 belongs to the DDA200 series of residual current device blocks. Unlike a complete RCBO that integrates overcurrent protection into the same device, the DDA204 is designed as an RCD block that is assembled with a compatible ABB S200 series miniature circuit breaker.

ABB describes the DDA200 series as suitable for assembly with S200 series MCBs. The DDA204 AC version provides protection against the effects of sinusoidal alternating earth-fault currents, protection against indirect contact and additional protection against direct contact when configured with 30 mA sensitivity. :contentReference[oaicite:2]{index=2}

Four-Pole Configuration

The DDA204 uses a four-pole configuration. The four-pole design is intended for suitable electrical systems where the residual-current protection device needs to operate across the required conductors of the circuit.

ABB documentation lists DDA204 models as four-pole RCD blocks. The product table specifically identifies 2CSB204001R1250 as the four-pole DDA204 AC-25/0.03 model. :contentReference[oaicite:3]{index=3}

The four-pole arrangement makes this model particularly relevant to appropriately designed three-phase and four-conductor electrical distribution systems.

25A Rated Current

The rated current of ABB 2CSB204001R1250 is 25 A. This specification is represented by the “25” portion of the DDA204 AC-25/0.03 product designation.

The 25 A rating is the nominal current associated with the RCD block. When the DDA204 is combined with an MCB, the complete protection arrangement must be selected according to the ratings and characteristics of the complete circuit.

ABB’s product documentation lists the DDA204 AC-25/0.03 with a rated current of 25 A. :contentReference[oaicite:4]{index=4}

30mA Residual Current Sensitivity

The 30 mA residual-current rating is one of the key characteristics of the ABB 2CSB204001R1250.

The “0.03” portion of the DDA204 AC-25/0.03 designation corresponds to 0.03 A, or 30 mA. ABB’s product table identifies this model with a residual current sensitivity of 30 mA. :contentReference[oaicite:5]{index=5}

A 30 mA residual-current device can provide additional protection against applicable residual-current conditions in installations designed for this type of protection. The final protective arrangement must comply with the applicable electrical standards and installation requirements.

Type AC Residual Current Protection

ABB 2CSB204001R1250 is a Type AC residual current device. The Type AC designation indicates that the device is intended to detect the specified sinusoidal alternating residual currents.

ABB technical data identifies both the residual current type and leakage current type as AC. :contentReference[oaicite:6]{index=6}

This is an important distinction when selecting an RCD block because different electrical loads can require different residual-current detection characteristics.

Assembly With ABB S200 Series MCBs

One of the defining characteristics of the DDA200 series is its modular assembly concept. The DDA204 AC-25/0.03 is intended to be combined with compatible ABB S200 series miniature circuit breakers.

This arrangement allows the MCB to provide overcurrent and short-circuit protection while the DDA204 block provides the specified residual-current protection function.

ABB specifically states that the DDA200 series is suitable for assembly with MCBs in the S200 series. :contentReference[oaicite:7]{index=7}

Difference Between an RCD Block and an RCBO

ABB 2CSB204001R1250 should not be confused with a complete RCBO. The DDA204 is an RCD block intended for combination with a compatible miniature circuit breaker.

An RCBO normally combines residual-current protection and overcurrent protection within one integrated device. The DDA204 instead forms part of a modular protection arrangement when assembled with the appropriate MCB.

This distinction is important when identifying replacement components or selecting equipment for an electrical distribution panel.

Rated Voltage

The ABB DDA204 AC-25/0.03 has a rated voltage of 230/400 V. Its rated operational voltage is also specified as 230/400 V. :contentReference[oaicite:8]{index=8}

The actual circuit voltage and system configuration must be verified before installation. The RCD block should only be used within the electrical conditions for which it is specified.

Rated Insulation Voltage

The rated insulation voltage of ABB 2CSB204001R1250 is 500 V. The rated insulation voltage represents the insulation level used for the device under the applicable product requirements.

ABB technical information lists 500 V as the rated insulation voltage and 4 kV as the rated impulse withstand voltage. :contentReference[oaicite:9]{index=9}

Rated Impulse Withstand Voltage

The device 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 relevant test conditions.

This specification should be considered when evaluating the device within the insulation coordination of the complete electrical installation.

Electrical Frequency

The ABB DDA204 AC-25/0.03 is specified for electrical systems operating at 50 Hz and 60 Hz. This makes it suitable for a broad range of conventional low-voltage AC distribution systems where the other electrical requirements are also compatible.

Residual Current Protection Function

The primary function of the DDA204 is residual-current protection. The device monitors the electrical circuit for applicable residual current and can operate when the residual current reaches the specified conditions.

For the 2CSB204001R1250 model, the rated residual current is 30 mA and the residual current type is AC.

The device is intended to provide protection against the effects of sinusoidal alternating earth-fault currents and can provide protection against indirect contacts and additional protection against direct contacts when the 30 mA configuration is applicable. :contentReference[oaicite:10]{index=10}

Protection Against Earth Fault Conditions

Residual-current protection is an important part of electrical safety in many low-voltage installations. The DDA204 monitors the balance of current in the protected circuit and responds to applicable residual-current conditions.

The 30 mA configuration is designed for applications requiring this level of residual-current sensitivity. Selection should be based on the complete electrical system and the applicable installation regulations.

DIN-Rail Modular Installation

ABB 2CSB204001R1250 is part of the modular DIN-rail product range. Its modular construction allows it to be integrated into distribution boards and electrical control assemblies using compatible ABB modular circuit protection equipment.

The DDA204 is designed as a modular accessory that can be assembled with the appropriate S200 series miniature circuit breaker.

Physical Dimensions

Available technical data identifies the DDA204 product dimensions at approximately 105 mm in width, 93 mm in height and 69 mm in depth. The product net weight is approximately 173 g. :contentReference[oaicite:11]{index=11}

Number of Modules

Product information identifies the DDA204 as occupying approximately 6 modular spacings on a DIN rail. :contentReference[oaicite:12]{index=12}

The modular width should be taken into account when planning the available space inside an electrical distribution board or control cabinet.

Terminal Capacity

Available technical information specifies a connecting capacity of up to 16 mm² for rigid and flexible conductors under the listed connection conditions. :contentReference[oaicite:13]{index=13}

Conductor selection and terminal installation should always follow the applicable ABB installation documentation and local electrical requirements.

Power Loss

The listed power loss for ABB 2CSB204001R1250 is approximately 3 W under the specified operating conditions. :contentReference[oaicite:14]{index=14}

Power dissipation is relevant when multiple modular protective devices are installed within the same enclosure because accumulated heat can affect the thermal environment of the cabinet.

Operating Temperature

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

Installation conditions, grouping and any required derating should be evaluated according to the applicable ABB technical documentation.

Degree of Protection

The DDA204 is identified with a degree of protection of approximately IP2X under the applicable product conditions. :contentReference[oaicite:16]{index=16}

The complete installation enclosure may provide additional environmental protection depending on the application.

Electrical Standards

ABB identifies the DDA204 AC series with compliance to IEC/EN 61009 Annex G. :contentReference[oaicite:17]{index=17}

The applicable standards should be considered together with the local electrical installation regulations when selecting and installing the device.

Residential Applications

The ABB DDA204 AC-25/0.03 can be used in suitable residential electrical distribution arrangements where compatible ABB S200 series circuit breakers and Type AC residual-current protection are appropriate.

The 30 mA sensitivity is particularly relevant to applications requiring additional residual-current protection, subject to the requirements of the applicable electrical installation standard.

Commercial Applications

The DDA204 series is also suitable for appropriately designed commercial distribution systems. Its modular design allows residual-current protection to be incorporated into distribution boards using compatible ABB S200 series miniature circuit breakers.

Potential applications include distribution circuits, building services and dedicated electrical branches where the 25 A rating and Type AC 30 mA residual-current characteristics are suitable.

Industrial Applications

In industrial installations, ABB 2CSB204001R1250 can be considered for suitable auxiliary or distribution circuits where the system requires Type AC residual-current protection and the device is compatible with the selected S200 series MCB.

The final selection should consider the connected equipment, leakage-current characteristics, short-circuit protection, conductor ratings and system configuration.

Product Family: DDA200

The ABB DDA200 family contains multiple RCD blocks with different numbers of poles, rated currents and residual-current sensitivities.

Within the DDA204 AC family, ABB lists 25 A, 40 A and 63 A models with different residual-current ratings. The specific 25 A, 30 mA version is identified by product code 2CSB204001R1250. :contentReference[oaicite:18]{index=18}

This product structure makes the complete ABB product number important when distinguishing between visually similar DDA204 models.

Product Identification and Inventory

For inventory management and technical cataloguing, 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 DDA204 25A 30mA, ABB 4 Pole RCD Block, ABB DDA200 RCD Block and ABB 2CSB204001R1250 RCD.

Replacement Considerations

When identifying a replacement for ABB 2CSB204001R1250, the complete electrical specification should be matched rather than relying only on the physical appearance.

• Product ID: 2CSB204001R1250
• Product Type: DDA204 AC-25/0.03
• 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
• Application: Assembly with compatible ABB S200 series MCBs
• Standard: IEC/EN 61009 Annex G

Other DDA204 products can have different rated currents or residual-current sensitivities. For example, ABB lists separate 40 A and 63 A versions, as well as models with 100 mA, 300 mA and higher residual-current ratings. :contentReference[oaicite:19]{index=19}

Related ABB DDA204 Models

The DDA204 AC product family includes multiple configurations. The 25 A, 30 mA version is 2CSB204001R1250, while the 40 A, 30 mA version is 2CSB204001R1400 and the 63 A, 30 mA version is 2CSB204001R1630. :contentReference[oaicite:20]{index=20}

The differences in current and residual-current ratings mean that these models should not be treated as interchangeable without checking the electrical design.

Technical Specification Summary

Technical Application Summary

ABB 2CSB204001R1250 is a DDA204 AC-25/0.03 residual current device block designed for assembly with compatible ABB S200 series miniature circuit breakers.

Its four-pole configuration, 25 A rated current, 30 mA residual-current sensitivity and Type AC residual-current detection make it a specific modular protection component for suitable low-voltage electrical systems.

The device has a rated voltage of 230/400 V, rated insulation voltage of 500 V and rated impulse withstand voltage of 4 kV. ABB documentation also identifies the product as part of the DDA200 series and specifies IEC/EN 61009 Annex G as the applicable standard reference. :contentReference[oaicite:21]{index=21}

Conclusion

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

The device is specifically designed for assembly with compatible ABB S200 series miniature circuit breakers, allowing residual-current protection to be incorporated into a modular circuit protection arrangement. Its 230/400 V rated voltage, 500 V insulation voltage and 4 kV impulse withstand voltage define key electrical characteristics of the product. :contentReference[oaicite:22]{index=22}

The recommended technical product name is ABB 2CSB204001R1250 DDA204 AC-25/0.03 4-Pole 25A 30mA Type AC Residual Current Device Block. For product identification, inventory management and replacement purposes, the complete ABB part number should be retained together with the DDA204 AC-25/0.03 designation.