ABB 2CDS283001R0577 S203P-K50 3-Pole 50A K-Curve 15kA Miniature Circuit Breaker

ABB product documentation identifies 2CDS283001R0577 as S203P-K50. The product is listed with three poles, 50 A rated current and K tripping characteristic. ABB’s S200P documentation also lists the 50 A model under product ID 2CDS283001R0577. :contentReference[oaicite:1]{index=1}

Product Identification

• Manufacturer: ABB
• Product ID: 2CDS283001R0577
• Product Type: S203P-K50
• Product Family: S200P
• Product Category: Miniature Circuit Breaker
• Number of Poles: 3
• Rated Current: 50 A
• Tripping Characteristic: K
• Rated Insulation Voltage: 440 V
• Rated Frequency: 50/60 Hz
• Mounting: DIN Rail
• Degree of Protection: IP20
• Product Net Weight: Approximately 0.42 kg

ABB S203P-K50 Overview

ABB 2CDS283001R0577 belongs to the S200P family of miniature circuit breakers developed for electrical circuit protection. The S200P series includes multiple pole configurations, current ratings and tripping characteristics, allowing the product family to cover different protection requirements.

The S203P-K50 specifically combines three poles with a 50 A rated current and K tripping characteristic. This combination distinguishes the product from other S200P models with different current ratings or tripping curves. ABB catalogues list S203P-K50 under product ID 2CDS283001R0577. :contentReference[oaicite:2]{index=2}

Three-Pole Configuration

The S203P-K50 uses a three-pole configuration. Three-pole miniature circuit breakers are suitable for appropriately designed three-phase circuits where coordinated protection and switching of the three conductors are required.

The three-pole design occupies three modular spaces in the distribution arrangement. Product information identifies the device as having three total poles and three protected poles. :contentReference[oaicite:3]{index=3}

The exact application must be determined according to the electrical system configuration and applicable protection requirements.

50A Rated Current

The ABB 2CDS283001R0577 has a 50 A rated current. This is the nominal current value used to identify the S203P-K50 within the ABB S200P range.

ABB catalogues list the S203P-K50 alongside other K-characteristic versions such as K40, K32, K25, K20 and K63. The product ID corresponding to the 50 A model is 2CDS283001R0577. :contentReference[oaicite:4]{index=4}

Selection of a 50 A circuit breaker should always be coordinated with conductor capacity, connected load, installation method and the prospective fault current of the electrical installation.

K Tripping Characteristic

The K tripping characteristic is a defining feature of this circuit breaker. The K characteristic is intended for applications where the protected circuit may experience higher starting or inrush currents than circuits typically protected with conventional B or C characteristics.

The exact tripping behavior and protection coordination must be evaluated according to the connected equipment and applicable electrical standards.

ABB product data explicitly identifies 2CDS283001R0577 as S203P-K50, confirming the K tripping characteristic. :contentReference[oaicite:5]{index=5}

Short-Circuit Protection

The ABB S203P-K50 provides protection against short-circuit conditions through its electromechanical tripping mechanism.

The available short-circuit rating depends on the applicable standard and test condition. Product information lists a rated ultimate short-circuit breaking capacity of 15 kA under IEC/EN 60947-2 at 230/400 V. The same product data lists an IEC/EN 60898-1 breaking capacity of 12.5 kA at 230 V and 400 V. :contentReference[oaicite:6]{index=6}

This distinction is important when evaluating the device for a particular installation. The applicable rating should be selected according to the installation standard and system fault-current requirements.

Overload Protection

The S203P-K50 provides thermal protection against sustained overcurrent conditions. When the current exceeds the permitted operating level for an appropriate period, the thermal release can operate and disconnect the protected circuit.

This function helps protect electrical conductors and connected equipment against prolonged overload conditions.

The 50 A rating should not be selected solely according to the connected equipment rating. Conductor capacity, ambient temperature, installation method and protection coordination must also be considered.

Electrical Protection Architecture

The S200P miniature circuit breaker combines thermal and electromechanical protection mechanisms. The thermal mechanism addresses overload conditions, while the magnetic mechanism provides rapid response to high fault currents.

This combination allows the circuit breaker to perform both overload and short-circuit protection within a single DIN-rail-mounted device.

DIN-Rail Mounting

ABB 2CDS283001R0577 is designed for installation on standardized DIN rails. Product data identifies compatibility with TH35-7.5 and TH35-15 mounting rails according to IEC 60715. :contentReference[oaicite:7]{index=7}

DIN-rail construction makes the S203P-K50 suitable for electrical distribution boards, industrial control cabinets and automation panels using modular protection equipment.

Compact Modular Construction

The S203P-K50 has a modular construction intended for integration into electrical distribution equipment. Product data identifies an approximate width of 52.5 mm, height of 88 mm and depth of 69 mm. :contentReference[oaicite:8]{index=8}

Rated Insulation Voltage

The S203P-K50 has a rated insulation voltage of 440 V according to IEC/EN 60664-1. Its rated impulse withstand voltage is specified as 4 kV under the applicable product conditions. :contentReference[oaicite:9]{index=9}

These electrical insulation parameters are important when evaluating the circuit breaker for use in a particular low-voltage distribution system.

Rated Frequency

Product information identifies the ABB S203P-K50 for 50 Hz and 60 Hz systems. :contentReference[oaicite:10]{index=10}

The actual operating voltage, frequency and circuit configuration should be verified before installation.

Terminal Connections

The ABB S203P-K50 uses screw terminals. Product information identifies the terminal type as screw terminals and specifies a tightening torque of approximately 2.8 N·m. :contentReference[oaicite:11]{index=11}

Proper conductor preparation and terminal tightening are important for maintaining reliable electrical connections. Installation should be performed according to the applicable ABB installation instructions and local electrical regulations.

Power Loss

Product data specifies approximately 3 W of power loss per pole at rated operating conditions, corresponding to approximately 9 W total for the three-pole device. :contentReference[oaicite:12]{index=12}

Power loss should be considered when evaluating thermal conditions inside an electrical cabinet, especially where multiple protective devices are installed together.

Degree of Protection

The S203P-K50 is identified with an IP20 degree of protection. :contentReference[oaicite:13]{index=13}

The IP rating describes the protection provided by the device enclosure under the relevant test conditions. The complete installation should provide any additional enclosure or environmental protection required by the application.

Ambient Operating Conditions

Available product information specifies an operating ambient air temperature range of approximately -25 °C to +55 °C, with a storage range of approximately -40 °C to +70 °C. :contentReference[oaicite:14]{index=14}

Actual derating requirements should be checked against the applicable ABB technical documentation when the device is installed in high-temperature environments or in densely populated electrical cabinets.

Standards

ABB S203P-K50 product data identifies compliance with standards including IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 and CSA 22.2 No. 235. :contentReference[oaicite:15]{index=15}

The applicable standard and corresponding electrical rating should be considered according to the intended installation and system design.

Applications

ABB 2CDS283001R0577 can be applied in electrical distribution and industrial control systems where a three-pole, 50 A miniature circuit breaker with a K tripping characteristic is required.

The K characteristic can make this type of circuit breaker relevant to circuits where equipment has specific starting-current behavior. Potential applications may include industrial machinery, motor-related auxiliary circuits, distribution circuits and other electrical loads where the specified protection characteristics are appropriate.

Industrial Control Cabinets

The DIN-rail format and three-pole design allow the S203P-K50 to be integrated into industrial control cabinets.

In automation installations, miniature circuit breakers can provide dedicated protection for individual power branches and auxiliary equipment. The correct breaker rating should be determined from the complete electrical design.

Three-Phase Circuit Protection

The three-pole construction makes the S203P-K50 suitable for appropriately designed three-phase circuits.

When used in three-phase systems, the three poles provide coordinated interruption of the protected phases. The exact wiring arrangement and protection scheme must follow the applicable electrical standards and system design.

Motor and Equipment Circuits

The K tripping characteristic can be relevant to circuits with higher starting-current behavior. This may include certain industrial equipment and motor-related circuits where the characteristics of the connected load are compatible with K-curve protection.

The S203P-K50 should not be treated as a universal motor-protection device. Motor overload and short-circuit protection requirements must be evaluated according to the complete motor protection system.

S200P Product Family

The ABB S200P series includes miniature circuit breakers with multiple current ratings and tripping characteristics. Within the S203P K-characteristic range, ABB lists models from very low current ratings through higher current versions including the 50 A S203P-K50. :contentReference[oaicite:16]{index=16}

The complete ABB product ID is therefore important when distinguishing the S203P-K50 from other visually similar circuit breakers in the same family.

Product Identification and Inventory

For inventory management, product cataloguing and technical identification, a suitable description is:

ABB 2CDS283001R0577 S203P-K50 3-Pole 50A K-Curve Miniature Circuit Breaker

Additional searchable descriptions can include ABB S203P-K50, ABB S203P K50, ABB S200P 50A MCB, ABB 3 Pole 50A K Curve Circuit Breaker and ABB 2CDS283001R0577 MCB.

Replacement Considerations

When selecting a replacement for ABB 2CDS283001R0577, the complete electrical specification should be matched rather than relying only on the physical appearance.

• Product ID: 2CDS283001R0577
• Product type: S203P-K50
• Number of poles: 3
• Rated current: 50 A
• Tripping characteristic: K
• Rated insulation voltage: 440 V
• Mounting: DIN Rail
• Short-circuit rating: verify according to the applicable standard
• Terminal arrangement: screw terminals

A different S203P model may look similar but have a different current rating or tripping characteristic. The complete product number should therefore be verified before replacement.

Technical Specification Summary

Technical Application Summary

ABB 2CDS283001R0577 is an S203P-K50 miniature circuit breaker designed for three-pole circuit protection with a 50 A rated current and K tripping characteristic.

Its modular DIN-rail construction, screw terminals, 440 V rated insulation voltage and high short-circuit capability make it suitable for appropriately designed low-voltage distribution and industrial control applications. Product documentation identifies a 15 kA Icu under IEC/EN 60947-2 at 230/400 V and a 12.5 kA Icn under IEC/EN 60898-1. :contentReference[oaicite:17]{index=17}

The K tripping characteristic provides a specific protection response suited to applications where the electrical load may have higher starting-current characteristics. The final selection should always be based on the complete circuit design and applicable standards.

Conclusion

The ABB 2CDS283001R0577 is the S203P-K50 three-pole miniature circuit breaker in the ABB S200P family. It provides a 50 A rated current and K tripping characteristic in a compact DIN-rail-mounted design.

The product is intended for suitable low-voltage electrical protection applications requiring coordinated overload and short-circuit protection. Its three-pole configuration makes it particularly relevant to appropriately designed three-phase circuits, while the K characteristic provides a defined tripping response for suitable loads.

The recommended technical product name is ABB 2CDS283001R0577 S203P-K50 3-Pole 50A K-Curve Miniature Circuit Breaker. For product identification, inventory management and replacement purposes, the complete ABB part number should be retained together with the S203P-K50 designation.