ABB offers a variety of ABB Circuit Breakers designed for different applications. Below are the key types:

1. Miniature Circuit Breakers (MCBs)

Uses:

• Residential and commercial electrical distribution.
• Protection against overloads and short circuits.
• Ensuring safety in small electrical circuits.

Features:

• Available in 1-pole, 2-pole, 3-pole, and 4-pole versions.
• B, C, and D curve tripping characteristics for different applications.
• Modular design for easy installation in distribution boards.
• Compliance with IEC 60898-1 and IEC 60947-2.

Advantages:

• Quick fault detection and disconnection.
• Compact size for easy panel integration.
• Enhanced safety with flame-retardant materials.

2. Molded Case Circuit Breakers (MCCBs)

Uses:

• Industrial and commercial power distribution.
• Protecting electrical circuits from short circuits and overloads.
• Motor protection in factories and large-scale facilities.

Features:

• Wide current range: From 16A to 3200A.
• Adjustable thermal and magnetic settings.
• High breaking capacity to handle large faults.
• Intelligent trip units for improved energy efficiency.

Advantages:

• Robust performance in demanding environments.
• Greater customization for specific applications.
• Longer service life with minimal maintenance.

3. Air Circuit Breakers (ACBs)

Uses:

• Main power protection in industrial plants, commercial buildings, and hospitals.
• Backup protection for transformers and generators.
• Smart energy monitoring and load management.

Features:

• Rated current up to 6300A.
• Advanced communication features for remote monitoring.
• Ekip trip units for digital protection and diagnostics.
• High withstand capacity for extreme fault conditions.

Advantages:

• Ensures reliability in mission-critical applications.
• Intelligent energy monitoring for cost savings.
• Modular and flexible for complex electrical networks.

4. Residual Current Circuit Breakers (RCCBs & RCBOs)

Uses:

• Personal and equipment protection against electrical shocks.
• Reducing fire risks caused by earth faults.
• Enhancing safety in residential and commercial installations.

Features:

• 30mA, 100mA, and 300mA sensitivity options.
• Available in 2-pole and 4-pole configurations.
• Meets IEC 61008-1 and IEC 61009-1 standards.
• Test button for easy periodic testing.

Advantages:

• Instant disconnection in case of ground faults.
• Essential for human protection and fire prevention.
• Compact and efficient design.