Eaton KW3400F Cutler‑Hammer Molded Case Circuit Breaker Frame

Eaton Cutler‑Hammer KW3400F is a K‑frame molded‑case circuit breaker frame belonging to Series‑C product family. It serves as the base frame unit for low‑voltage power distribution systems, providing branch‑circuit over‑current protection for switchboards, motor control centers and busway power circuits.

This 3‑pole breaker frame supports adjustable thermal trip and adjustable magnetic trip functions, rated 400A with 45kAIC short‑circuit interrupt capacity at 415VAC. It accepts optional auxiliary contacts and shunt trip accessories, widely used as replacement spare parts for industrial factory, power plant and petrochemical low‑voltage distribution cabinet maintenance projects.

Main Specifications

• Brand: Eaton Cutler‑Hammer
• Model: KW3400F (Series‑C K‑Frame Breaker Frame)
• Product Type: Molded Case Circuit Breaker Frame
• Pole Count: 3‑pole
• Rated Current: 400A
• Rated Voltage: 600 VAC / 250 VDC
• Short‑Circuit Interrupt Rating: 45 kAIC @ 415 VAC
• Trip Mode: Adjustable thermal trip, adjustable magnetic trip
• Installation: Panel / MCCB mounting for distribution cabinet
• Operating Temperature Range:‑25°C ~ +55°C

Core Functions

• Provide branch‑circuit overload protection via adjustable thermal tripping mechanism
• Implement short‑circuit fault cut‑off with configurable magnetic instantaneous trip setting
• K‑frame mechanical base supports installation of trip unit and optional auxiliary accessories
• High short‑circuit breaking capacity protects downstream cables and load equipment against fault current
• Modular structure allows flexible configuration of auxiliary contact, shunt trip and undervoltage release
• Robust molded‑case housing adapts to harsh industrial cabinet environmental conditions
• Front‑panel manual operating handle for local circuit switching and maintenance isolation operation
• Standard mechanical dimensions fit MCC, switchboard and busbar distribution system layout
• Fast fault isolation reduces equipment damage risk caused by overload and short‑circuit accidents
• Deliver reliable low‑voltage power distribution protection foundation for industrial automation systems

Application Scenarios

• Manufacturing workshop low‑voltage power distribution cabinet and motor control center units
• Power plant auxiliary workshop switchboard and branch power supply protection systems
• Petrochemical and chemical plant low‑voltage distribution panel and busway protection projects
• Metallurgy industry heavy‑load equipment power supply branch circuit protection cabinets
• Water‑treatment plant large‑capacity motor and pump power distribution protection applications
• Logistics and material handling equipment main power distribution protection systems
• Distribution system renovation, circuit‑breaker frame replacement and cabinet upgrade projects
• Legacy Series‑C power distribution equipment maintenance and spare‑parts backup work
• Eaton Cutler‑Hammer power distribution spare‑parts inventory and on‑site maintenance supporting projects