4000A Air Circuit Breaker

This 4000A Air Circuit Breaker (DAA-4000 Series) is ideal for bulk procurement, built for AC 50Hz, 690V industrial networks with 3200A-4000A current range. The product (3P model) delivers full protection against overload, short circuit, undervoltage and single-phase grounding faults. It has intelligent protection and open communication, supporting Four Remotes for modern automation and control centers.

Product Parameter (Specification)

Product Feature And Application

The CDADA 4000A air circuit breaker is specifically engineered for high-capacity applications such as power plants, large-scale manufacturing facilities, and utility substations. Available in both 4000A drawout ACB and fixed configurations, this model supports hot-swap maintenance for minimal downtime. Equipped with optional intelligent controllers, it offers enhanced fault discrimination and remote monitoring capabilities.

Key Advantages:

★ High impulse withstand voltage (up to 12000V)

★ Supports "Four Remotes" for seamless integration into SCADA systems

★ Customizable branding and packaging options available

Production Details

Manufactured by SHANGHAI DADA ELECTRIC CO., LTD., every 4000A air circuit breaker undergoes stringent quality assurance processes to ensure reliability and durability. Built using oxygen-free copper contacts with silver alloy overlays, these units are tested for over 10,000 mechanical operations. Compared to generic alternatives, CDADA breakers offer tighter trip tolerances (±3%) and superior thermal stability at elevated temperatures.

Competitive Edge:

★ Precision-engineered arc quenching chamber

★ ISO 9001 certified production processes

★ Rapid prototyping services for custom specifications

Frequently Asked Questions (FAQ)

Q1: What is the maximum rated current supported by the CDADA 4000A ACB?

A1: The maximum rated current supported by the CDADA 4000A ACB is 4000A, with options for lower ratings including 3200A and 3500A.

Q2: Can this breaker be used in both fixed and drawout configurations?

A2: Yes, the CDADA 4000A ACB is available in both fixed and drawout configurations, allowing flexibility based on your installation needs.

Q3: Does the CDADA 4000A ACB come with an intelligent controller?

A3: While the base model can function as an isolator without an intelligent controller, optional intelligent controllers are available for enhanced protection and remote monitoring features.

Q4: How does the impulse withstand voltage vary with altitude?

A4: The impulse withstand voltage is 8000V at 2000 meters altitude and should not exceed 12000V at higher altitudes.

Q5: Is the CDADA 4000A ACB compliant with international standards?

A5: Yes, the CDADA 4000A ACB complies with both national (GB14048.2) and international (IEC60947-2) standards, ensuring its applicability worldwide.