ABB PR221DS Circuit Breaker

1. Product Overview

The ABB PR221DS Circuit Breaker is a molded case circuit breaker (MCCB) from the ABB PR series, designed to provide overload, short-circuit protection, and control for electrical circuits and equipment.
It offers reliable breaking capacity and fast response, suitable for industrial, commercial, and residential applications, protecting motors, power lines, and other critical loads while ensuring safe and stable power supply.

2. Technical Specifications

• Model: PR221DS

• Type: Molded Case Circuit Breaker (MCCB)

• Brand: ABB

• Number of Poles: 2

• Rated Operational Voltage (Ue): AC 415 V / 440 V

• Rated Current (In): 10 A – 100 A (depending on version)

• Breaking Capacity (Icu): 10 kA (AC 415 V)

• Rated Short-Time Withstand Current (Ics): 6 kA

• Operation: Manual / electrically assisted operation

• Tripping Type: Thermal-magnetic trip

• Additional Functions: Optional remote control / signaling contacts

• Mounting: DIN rail or screw mounting

• Operating Temperature: -25 to +60 °C

• Protection Class: IP20 (installed in control cabinets)

• Mechanical Life: > 10,000 operations

• Electrical Life: > 4,000 operations

3. Key Advantages & Features

1. Reliable Overload and Short-Circuit Protection
   Thermal-magnetic trip ensures precise protection for circuits and equipment.

2. High Breaking Capacity
   Safely interrupts short-circuit currents, protecting system and equipment.

3. Modular Installation Design
   Compatible with ABB plug-in accessories, auxiliary contacts, and signaling modules.

4. Easy Operation
   Manual operation is simple; supports remote control and status indication.

5. Wide Applicability
   Suitable for industrial, commercial, residential, and distribution systems.

4. Typical Applications

• Industrial plant distribution systems

• Commercial building power systems

• Small to medium power distribution panels

• Motor and critical load protection

• Residential distribution and safety protection

5. Installation & Handling Notes

1. Verify rated current, voltage, and breaking capacity match system requirements before installation.

2. Wire according to the wiring diagram to ensure secure and reliable connections.

3. Install in dry, ventilated control cabinets; avoid moisture.

4. Periodically inspect breaker operation and contact wear to ensure proper protection.

5. Disconnect main power before maintenance or replacement to ensure safety.

The structure and details of the product：

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