999320 - 20 Amp Circuit Breaker

999320 - 20 Amp Circuit Breaker

Looking for reliable circuit protection that you can count on day in and day out? The 999320 Circuit Breaker delivers consistent, high-quality performance for industrial and commercial electrical systems. This 3‑pole, 20-amp breaker is designed for three‑phase circuits, providing dependable defense against overloads and short circuits before they can cause damage or downtime. With a 600 VAC A.I.C. rating, it’s built for heavy-duty environments — whether you’re running machinery, managing HVAC systems, or powering equipment in demanding settings. Housed in an ML‑1 molded case and featuring a thermal‑magnetic mechanism, the 999320 reacts quickly to electrical faults, helping you keep your operations safe and running smoothly.

Key Features and Benefits

• High‑Voltage Ready: Rated for up to 600 VAC, this breaker is ideal for environments where stable, high-voltage circuit protection is essential.
• Thermal‑Magnetic Protection: Combines protection against overloads (thermal response) and sudden short circuits (magnetic response), offering comprehensive coverage for circuit issues.
• Sturdy Construction: The ML‑1 molded case frame is built to handle demanding industrial and commercial conditions — from basements to factory floors.
• Three‑Pole Configuration: Perfect for three‑phase systems, giving full-circuit protection for multi-phase power delivery.
• Reliable Performance: Designed to minimize downtime and safeguard your electrical infrastructure so you can focus on the job at hand.

Technical Specifications

• Poles: 3‑Pole (Three‑phase)
• Amperage: 20 A
• A.I.C. Rating: 600 VAC
• Frame Type: ML‑1 Molded Case
• Dimensions:
  • Width: 4.50″
  • Length: 6.50″
  • Depth: 3.00″
• Approximate Shipping Weight: ~7 lbs

Material Compliance and Certifications

• Industry Standards: The 999320 adheres to recognized industry safety and performance standards, including UL certification.
• UL Standards: Its thermal‑magnetic design and certified build quality ensure you receive dependable, code-compliant circuit protection that meets or exceeds safety requirements for industrial and commercial installations.

Where It Works Best

• This breaker shines in settings where dependable circuit protection is non-negotiable — think manufacturing facilities, light industrial plants, commercial warehouses, HVAC systems, data centers, and other environments running three-phase power. The 20 Amp capacity makes it a great choice for protecting smaller circuits within a larger electrical network, giving you peace of mind that sensitive equipment is guarded against overloads, shorts, and unexpected electrical surges.