ABB PR112/P 4000A Air Circuit Breaker For Low Voltage Power Distribution Systems

Introducing the ABB PR112/P 4000A Air Circuit Breaker — a heavy-duty protective device engineered for reliable protection and seamless switching in low-voltage power distribution systems. Built for industrial and commercial facilities, this breaker safeguards critical loads while delivering consistent performance under fault conditions.

What it is

The PR112/P is an air circuit breaker (ACB) rated at 4000 A, designed for main incoming feeders and switchboards where dependable interruption and selective protection are essential for uninterrupted operation.

Key specifications

• Model/Part Number: PR112/P
• Current Rating: 4000 A
• Breaker Type: Air Circuit Breaker (ACB)

Why it matters

With adjustable trip settings, the PR112/P enables tailored protection curves that align with your facility’s fault-current profile. This flexibility helps prevent unnecessary outages while ensuring rapid disconnection when faults occur. Its high interruption capacity provides a robust safety margin for equipment protection in demanding environments.

Ideal for

• Main incoming feeders feeding large switchboards or distribution centers
• Critical power distribution in industrial plants and commercial facilities
• Systems requiring configurable protection and reliable fault interruption

What sets it apart

• Rugged, heavy-duty design built to withstand challenging industrial environments
• Large-current capability (4000 A) for demanding feeder applications
• Precise, adjustable trip settings to coordinate with upstream protection and minimize downtime

Practical tips

To maximize performance, pair the PR112/P with a compatible protection scheme and verify trip settings during commissioning. Regular inspection of contacts and mechanism, along with periodic electrical testing, helps ensure fast, clean disconnections and extends the service life of downstream equipment.