ABB DSMB-01C Motor protection circuit breaker (MPCB)

ABB DSMB-01C Motor Protection Circuit Breaker

The ABB DSMB-01C is a compact, high-performance motor protection circuit breaker (MPCB) designed for reliable control and protection of three-phase motors in industrial and commercial applications. Part of ABB’s DSMB series, this device integrates motor overload protection, short-circuit protection, and switching functions into a single unit, simplifying installation and enhancing system safety.

Key Features

1. Motor-Specific Protection
   • Overload Protection: Adjustable thermal protection to prevent motor damage due to prolonged overcurrent.
   • Short-Circuit Protection: Magnetic tripping mechanism for instantaneous response to high-current faults.
   • Phase Loss Protection: Safeguards motors against phase imbalances or failures.
2. Compact Design
   • Space-saving modular construction for easy integration into control panels or motor control centers (MCCs).
   • DIN rail mounting (35 mm standard) for quick installation.
3. Adjustable Settings
   • Current Rating: Adjustable overload current range (e.g., 0.1–1.0 A for DSMB-01C) to match motor specifications.
   • Trip Class: Configurable trip time (e.g., Class 10) to accommodate different motor starting conditions.
4. Versatile Switching
   • Manual ON/OFF switching with a robust rotary handle.
   • Auxiliary contacts (optional) for remote status indication or integration into control systems.
5. Durability & Compliance
   • Rated for up to 690 V AC and compliance with IEC/EN 60947-2 and IEC/EN 60947-4-1 standards.
   • High mechanical endurance (≥20,000 cycles) and resistance to harsh environments.

Technical Specifications

• Rated Current: 0.1–1.0 A (adjustable)
• Breaking Capacity: Up to 100 kA (dependent on system voltage).
• Voltage Rating: 690 V AC (50/60 Hz).
• Operating Temperature: -25°C to +60°C.
• Protection Class: IP20 (enclosure), IP40 (terminal cover closed).

Applications

The DSMB-01C is ideal for:

• Motor control in pumps, fans, compressors, and conveyor systems.
• HVAC systems, water treatment plants, and industrial machinery.
• Integration into motor starter combinations or standalone protection.

Advantages

• Simplified Wiring: Combines switching and protection, reducing the need for separate components.
• Cost-Effective: Lowers installation and maintenance costs.
• Reliable Performance: ABB’s quality assurance ensures long-term operation under demanding conditions.