Pufa DM1 800M 3320 400V Air Circuit Breaker for Industrial Power Distribution Systems

Introducing the Pufa DM1-800M/3320 400V Air Circuit Breaker — a heavy‑duty protective solution engineered for reliable switching and safeguarding of low‑voltage power distribution in industrial and commercial facilities. Built to endure demanding electrical environments, this breaker ensures rapid fault isolation and dependable service continuity.

Advanced protection for demanding networks

With a 400V rating, the DM1-800M/3320 is purpose‑built for modern LV distribution systems. The air circuit breaker design delivers swift opening under fault conditions, helping to protect wiring, motors, transformers, and downstream equipment from short circuits and overloads while reducing arc duration and wear on switchgear.

• Adjustable trip settings enable tailored protection for specific loads and configurations, so you can fine‑tune the device to motor starts, sensitive electronics, or high‑inrush feeders.
• High interruption capacity provides robust fault handling in large distribution schemes, improving system resilience and uptime.
• Ideal as main incoming feeders, as well as within switchboards and critical distribution points where reliable performance matters.

Designed for real‑world use in industry

Whether you’re upgrading an existing facility or installing a new distribution network, the DM1‑800M/3320 offers predictable, scalable protection. Its compact, rugged form factor fits standard LV panels, and its 400V operating range aligns with common industrial electrical infrastructures, simplifying integration with existing gear and control systems.

Practical scenarios and outcomes

• Protect a main incoming feeder feeding multiple busbars, ensuring quick disconnect during a fault to prevent cascading outages.
• Shield critical loads in a switchboard where precision protection is required to safeguard motors, pumps, and transformers.
• Support ongoing maintenance and system reliability by enabling clear, adjustable protection settings that reflect current load profiles.

Technical snapshot

• Model / Part Number: DM1-800M/3320
• Voltage Rating: 400V
• Breaker Type: Air Circuit Breaker
• Applications: Main incoming feeders, switchboards, critical power distribution
• Protection: Adjustable trip settings, high interruption capacity

By selecting the Pufa DM1-800M/3320, facilities managers and electrical engineers gain a dependable, configurable protection layer that supports safer, more efficient power distribution across challenging environments.