Terasaki AT20 2000A 690 VAC Air Circuit Breaker For Low Voltage Power Distribution Commercial Applications

The Terasaki AT20 2000A 690 VAC Air Circuit Breaker is a heavy-duty solution designed to protect and control low-voltage power distribution in industrial and commercial facilities. Built to handle demanding applications, this model offers reliable switching and robust fault protection where uptime matters most.

Key specifications at a glance

• Model / Part Number: AT20
• Current Rating: 2000A
• Voltage Rating: 690VAC
• Breaker Type: Air Circuit Breaker
• Applications: ideal for main incoming feeders, switchboards, and critical power distribution where protection and control are essential
• Protection features: adjustable trip settings to tailor protection to your system, paired with high interruption capacity for swift fault clearance

The AT20 is purpose-built for environments where power continuity and safety are non-negotiable. Its 2000A capacity makes it well-suited for primary feeders and large switchboards, while the 690VAC rating accommodates a wide range of low-voltage distribution schemes common in industrial and commercial facilities.

Why choose the Terasaki AT20 for your facility

• Tailorable protection: adjustable trip settings allow you to align protection thresholds with your network’s coordination plan, reducing unnecessary trips and safeguarding downstream equipment.
• High interruption capability: designed to rapidly interrupt fault currents, helping to minimize damage and downtime during electrical faults.
• Reliable switching for critical distribution: engineered to perform reliably in main feeders and switchboards, supporting stable power delivery to essential loads.
• Industrial and commercial fit: specifically specified to meet the needs of facilities that require durable, scalable low-voltage protection.

Practical scenarios and benefits

• Upgrading or expanding a facility’s main incoming feeders to support higher loads without compromising protection reliability.
• Integrating into existing switchboards where precise protection coordination is needed to protect transformers, motors, and other critical equipment.
• Designing safer maintenance windows by adjusting trip settings to balance fast fault clearance with selective tripping across the distribution network.

For engineers and facilities managers seeking a dependable, high-capacity solution for low-voltage power distribution, the Terasaki AT20 2000A 690 VAC Air Circuit Breaker stands out with its combination of rugged build, configurable protection, and strong interruption performance. It’s a concrete step toward safer, more reliable electrical distribution in commercial and industrial environments.