Mitsubishi Electric NF400-CW Motor Starter/Circuit Breaker 690V 300Amp 3-Pole

Mitsubishi Electric NF400‑CW is a heavy‑duty motor starter and molded case circuit breaker designed for protection and switching of high‑current three‑phase motors and power circuits. It combines overload and short‑circuit protection in a compact, robust assembly suitable for demanding industrial applications. **Technical specifications:** Manufacturer: Mitsubishi Electric Product type: Motor starter / molded case circuit breaker Model number: NF400‑CW Number of poles: 3‑pole Rated operational voltage: Up to 690 VAC Rated frequency: 50/60 Hz Rated current: 300 A Frame size: 400 A frame Breaking capacity: High interrupting capacity (industrial MCCB class) Trip unit type: Thermal‑magnetic Overload protection: Adjustable thermal trip Short‑circuit protection: Magnetic instantaneous trip Operation method: Manual rotary handle Handle mounting: Door‑coupled rotary handle (as equipped) Mounting style: Panel mount / switchgear mount Application: Motor protection, feeders, industrial power distribution Isolation function: Yes Contact material: Silver alloy contacts Housing material: Molded high‑strength insulating resin Operating environment: Industrial electrical enclosures Compliance standards: IEC industrial circuit breaker standards Product series: NF Series Typical use: Motor control centers, switchboards, control panels Brand marking: Mitsubishi Electric Country of manufacture: Japan