Heavy Duty 400 Amp Four Pole Residual Current Molded Case Circuit Breaker Built Tough For Shop Floor Setup And Delivers Rock Solid Circuit Protection For Your Next Big Project

Reliable 400A breaker shields busy racks from nasty electrical fault trips
✔️ NSX400F MIC2.3 model offers 400 amp rating and seals out shop dust

This single breaker keeps your workshop circuits secure by cutting power fast when it detects unsafe ground leaks. You will mount it inside standard distribution panels to protect welders, compressors, and heavy tools from sudden tripping. It handles high current loads without overheating, giving you steady uptime while you work.

✅ 400 amp continuous load rating handles heavy shop equipment
✅ Four pole design separates all phases for clean phase management
✅ NSX400F MIC2.3 molded case housing resists metal dust and impact

💡 Why pick a molded case breaker over a standard thermal overload relay for plant wiring?
A sturdy enclosure protects internal contacts from moisture, oil spray, and accidental wrench strikes.
- Trips cleanly without blowing so you can reset quickly and get back online faster
- Handles huge startup currents that would melt cheaper glass fuse elements every time
- Matches NEC guidelines for modern three phase panel upgrades in tight equipment rooms
- Keeps maintenance costs low since replaceable cores survive years under heavy cycling

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