Eaton LWC3400 Molded Case Circuit Breaker - IEC Rated
Part Number: LWC3400
Quick Summary
LWC3400 is an Eaton molded case circuit breaker that protects industrial power distribution panels. Engineers often wrestle with nuisance trips and inconsistent protection when surges occur or wiring changes complicate coordination. This device leverages an interchangeable thermal-magnetic trip (T207) and a robust 100 kAIC interrupt rating to deliver reliable protection across 690 Vac and 250 Vdc systems, supporting global operations with IEC rated performance. The three-pole, L-frame design and line-and-load terminals simplify installation in diverse panel configurations. By combining a 400 A amperage rating with compact dimensions, the LWC3400 helps reduce panel footprint, cut wiring complexity, and raise up-time in automation environments, from manufacturing floors to critical processes.
Product Information
Extended Description
LWC3400 Eaton: Eaton Series C complete molded case circuit breaker, L-frame, LWC, Complete breaker, Interchangeable thermal-magnetic trip type, Three-pole, 400A, 690 Vac, 250 Vdc, 100 kAIC at 415 Vac, Line and load, World
Product Name
Eaton Series C complete molded case circuit breaker
Catalog Number
LWC3400
UPC
786679056011
Product Length/Depth
4.06 in
Product Height
8.25 in
Product Width
8.25 in
Product Weight
21 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
IEC Rated
Amperage Rating
400 A
Voltage rating
690 Vac, 250 Vdc
Trip Type
T207
Circuit breaker type
LWC
Circuit breaker frame type
Complete breaker
Terminals
Line and load
Frame
L
Class
World
Interrupt rating
100 kAIC at 415 Vac
Number of poles
Three-pole
Application of Multi-Wire Terminals for Molded Case Circuit Breakers
Application of Multi-Wire Terminals for Molded Case Circuit Breakers
Application of Multi-Wire Terminals for Molded Case Circuit Breakers
Current limiting Series C molded case circuit breakers product aid
Current limiting Series C molded case circuit breakers product aid
Current limiting Series C molded case circuit breakers product aid
Current limiting Series C molded case circuit breakers product aid
Current limiting Series C molded case circuit breakers product aid
Current limiting Series C molded case circuit breakers product aid
Current limiting Series C molded case circuit breakers product aid
Breaker service centers
Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2
Circuit breakers explained
Circuit breakers explained
Series C J-Frame molded case circuit breakers time current curves
Series C J-Frame molded case circuit breakers time current curves
Series C J-Frame molded case circuit breakers time current curves
Series C J-Frame molded case circuit breakers time current curves
Series C J-Frame molded case circuit breakers time current curves
Feature → Business Impact → Application: 400 A Amperage Rating enables protection of large motors and feeders while allowing scalable control of downstream circuits; reduces nuisance trips during startup and overload events, increasing line reliability. Application: motor control centers (MCCs), main distribution panels, and PLC-backed machinery. Feature → Business Impact → Application: 690 Vac / 250 Vdc voltage ratings support both AC power distribution and DC control circuits with a single protective device; simplifies panel design and stock across mixed-voltage facilities. Application: factory floors, process lines, and embedded automation controls. Feature → Business Impact → Application: 100 kAIC interrupt rating at 415 Vac provides high fault-current clearing capability; lowers risk of cascading faults and equipment damage. Application: heavy industries, data centers, and locations with high short-circuit potential. Feature → Business Impact → Application: three-pole L-frame complete breaker design reduces installation time and deviation between subassemblies; improves maintainability and serviceability. Application: standard panel boards, switchgear upgrades, and new install projects. Feature → Business Impact → Application: interchangeable thermal-magnetic trip (T207) enables selective coordination and easy field adjustments; decreases downtime during protection tuning. Application: motor protection schemes, panel protection upgrades, and compliance-driven installations. Feature → Business Impact → Application: IEC Rated and World-class class design ensures global applicability and compliance; aids procurement in multinational facilities. Application: international manufacturing, process industries, and distribution networks.
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FAQs
The LWC3400 is ideal for protecting industrial power distribution panels, MCCs, and control circuits in manufacturing and processing environments, delivering 400 A protection with high fault-current capability.
It uses line and load terminals in a three-pole L-frame arrangement, with a 4.06 in depth, 8.25 in height and width footprint, designed for straightforward integration into Series C panel assemblies.
Amperage rating 400 A; voltage rating 690 Vac / 250 Vdc; interrupt rating 100 kAIC at 415 Vac; trip type T207; frame L; class World; three-pole configuration.
IEC Rated certification is indicated for IEC-based global applications; the product is designed for world-wide service within industrial protection and control environments.
Warranty follows Eaton policy 25-000, offering one year from installation or eighteen months from shipment, whichever comes first; support centers and service literature are available in the provided downloads.