Introduction

ABB announces the groundbreaking DS301C M IcN 10kA—a compact, high-performance Residual Current Circuit Breaker with Overcurrent Protection (RCBO) that sets new industry standards for space efficiency and protection performance. This revolutionary product represents the world's thinnest electromechanical RCBO, featuring voltage-independent operation that provides comprehensive protection against overcurrent, short circuits, and residual current faults.

Key Specifications

Unmatched Innovation in Compact Design

The DS301C M achieves a remarkable 10kA short-circuit breaking capacity within a single 17.6mm module width—the standard width for Miniature Circuit Breakers (MCBs). This protection level was previously achievable only in wider two-module or three-module configurations, making this innovation a significant breakthrough in electrical protection technology.

Space Efficiency

The DS301C M delivers 50% space savings compared to traditional RCBO or RCCB+MCB configurations. This space efficiency provides exceptional value in retrofit and renovation projects where limited panel space creates significant challenges:

• Additional circuit capacity for expanded functionality

• Future system upgrades without panel replacement

• Installation of energy meters and other DIN rail devices

• Enhanced flexibility in complex commercial and industrial installations

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Comprehensive Protection Capabilities

The DS301C M integrates ABB's proven Miniature Circuit Breaker (MCB) technology with Residual Current Circuit Breaker (RCCB) functionality into a single compact module, delivering reliable protection against:

1. Ground Fault Protection

Detects and interrupts ground faults that could pose safety hazards to personnel and equipment. The voltage-independent operation ensures reliable protection even during unstable power supply conditions.

2. Short Circuit Protection

Provides rapid response to short circuit events, preventing equipment damage and fire hazards. The 10kA breaking capacity handles severe fault conditions in demanding commercial and industrial environments.

3. Overcurrent Protection

Monitors current flow and intervenes when overload conditions occur, protecting conductors and connected equipment from thermal damage.

Selective Fault Isolation

When a fault occurs, only the affected circuit is disconnected, which:

• Maintains system continuity across unaffected circuits

• Reduces downtime and operational disruption

• Simplifies maintenance procedures for commercial and industrial facilities

• Improves system reliability through targeted fault isolation

Applications and Use Cases

The DS301C M RCBO is engineered for demanding commercial and industrial applications, including:

• Large commercial buildings with extensive electrical systems

• Industrial facilities requiring robust protection solutions

• Complex renovation projects with limited panel space

• Building automation systems integrating multiple electrical technologies

• Healthcare facilities where system continuity is critical

• Data centers requiring reliable power protection

Industry Expert Perspective

Andrea Menti, Business Line Manager for Distribution at ABB Smart Buildings Division, states:

"As buildings integrate more electrical systems and technologies, space within distribution panels is becoming increasingly limited. Protection devices must still deliver high-performance protection within these constrained spaces. The DS301C M 10kA achieves high-level fault protection in a compact single-module form factor, enabling installers and builders to maintain high safety standards with smaller installation footprints—particularly valuable in retrofit applications."

Voltage-Independent Operation

The RCBO employs voltage-independent operating principles, ensuring reliable fault protection even during:

• Power supply instability events

• Voltage interruptions or fluctuations

• Emergency conditions where power quality is compromised

This design philosophy ensures continuous protection regardless of power supply conditions, a critical feature for applications requiring maximum safety and reliability.

Integration and Compatibility

As part of ABB's comprehensive DIN rail product family, the DS301C M integrates seamlessly with:

• Other protection devices from ABB's portfolio

• Control and monitoring equipment for complete system solutions

• Secondary distribution systems in commercial installations

• Terminal distribution solutions for end-use applications

Sustainability and Environmental Responsibility

From a sustainability perspective, the DS301C M belongs to the ABB EcoSolutions product series, demonstrating ABB's commitment to environmental stewardship:

Material Efficiency

The compact design reduces material usage through optimized packaging, improving overall material utilization efficiency.

Sustainable Manufacturing

Manufactured at ABB's Saronno factory in Italy, the facility operates as part of ABB's global "Mission to Zero" initiative, adhering to "Zero Landfill" operational standards.

Environmental Impact

• Reduced material consumption through compact design

• Lower transportation emissions due to smaller form factor

• Sustainable manufacturing processes certified to environmental standards

Launch and Demonstration

ABB will showcase the DS301C M IcN 10kA at the Light + Building 2026 trade fair in Frankfurt, specifically in the "Innovation Insights" experience area. Visitors can experience this breakthrough technology in realistic application environments, including:

• Scale model residential settings demonstrating practical applications

• Commercial building scenarios showing integration capabilities

• Interactive demonstrations highlighting key features and benefits

Technical Advantages Summary

Conclusion

The ABB DS301C M IcN 10kA represents a significant advancement in electrical protection technology, combining space efficiency with high-performance protection capabilities. Its innovative single-module design, comprehensive protection features, and sustainable manufacturing make it an ideal choice for modern commercial and industrial applications where space constraints and reliability requirements demand innovative solutions.

For electrical engineers, installers, and building professionals seeking maximum protection in minimum space, the DS301C M delivers unprecedented performance that addresses the evolving challenges of modern electrical system design and installation.