Eaton CN55NN3B 270A NEMA Size 5 Reversing Contactor, 220V Coil

The Eaton CN55NN3B is a NEMA reversing contactor (Commercial Reference: CN55NN3B) rated for 135 A across three poles, with coil options of 240 VAC (60 Hz) or 220 VAC (50 Hz). This NEMA Size 4, open‑style contactor is built for full‑voltage reversing and reliable motor control in heavy industrial applications such as conveyors, pumps, compressors, HVAC and general motor starter panels where robust direction change and durable switching are required.

Key Features

• 3‑pole, 135 A main contacts for heavy-duty motor switching and reversing duties.
• Coil options: 240 VAC (60 Hz) and 220 VAC (50 Hz) to suit regional control voltages.
• NEMA Size 4 open construction for panel mounting in industrial control enclosures.
• Designed to meet NEMA, UL, CSA and other international standards for safety and performance.
• Compatible with adjustable bimetallic overload relays (interchangeable heater packs) and electronic overload (C440) for flexible motor protection.
• Practical wiring features: screw type power terminals with captive pressure plates, top‑located coil terminals and optional finger‑proof shields.

Technical Specifications

Applications

Typical uses include reversing control for conveyors and winches, pump and compressor starters, motor control panels for HVAC and process machinery, and industrial equipment requiring frequent direction changes or full‑voltage starts.

We supply genuine Eaton contactors through authorized distribution channels from our Batam base, with fast delivery across Indonesia and Southeast Asia. Competitive pricing and local logistics support available — contact us to request a quotation or confirm availability for CN55NN3B today.