Eaton LW3315 Molded Case Circuit Breaker - IEC Rated

Part Number: LW3315
Manufacturer
Eaton
Part number
LW3315

Quick Summary

The Eaton LW3315 molded case circuit breaker provides reliable overcurrent protection for industrial power distribution and control panels. Many engineers face space constraints, complex wiring, and compatibility challenges when upgrading legacy MCCBs. This LW3315 features an L-frame, three-pole design with line and load terminals and an interchangeable thermal-magnetic trip (T207) for precise coordination. With IEC Rated certification and supporting UL-listed documentation for Series C MCCBs, it supports global compliance and fast approval in multi-site installations. Leveraging this device can reduce panel downtime, improve protection reliability, and simplify procurement through a single, globally referenced MCCB family that fits standard Eaton accessories and documentation. This makes it an ideal choice for machine builders and process automation panels seeking robust electrical protection.

Product Information

Extended Description

LW3315 Eaton: Eaton Series C complete molded case circuit breaker, L-frame, LW, Complete breaker, Interchangeable thermal-magnetic trip type, Three-pole, 315A, 690 Vac, 250 Vdc, 45 kAIC at 415 Vac, Line and load, World
Product Name
Eaton Series C complete molded case circuit breaker
Catalog Number
LW3315
UPC
786679055861
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
315A
Voltage rating
690 Vac, 250 Vdc
Trip Type
T207
Circuit breaker type
LW
Circuit breaker frame type
Complete breaker
Terminals
Line and load
Frame
L
Class
World
Interrupt rating
45 kAIC at 415 Vac
Number of poles
Three-pole
Feature: Interchangeable thermal-magnetic trip (T207) enables precise coordination and selective tripping under overload conditions. Business Impact: reduces nuisance trips and improves system uptime while simplifying maintenance planning. Application: motor control centers and process automation panels where accurate protection coordination is critical. Feature: Three-pole, line-and-load terminals with an L-frame design. Business Impact: streamlined installation, robust mechanical integrity, and straightforward field wiring. Application: new builds and panel upgrades in industrial distribution where space and reliability matter. Feature: 315 A amperage rating with 690 Vac / 250 Vdc voltage ratings. Business Impact: supports high-current three-phase systems and occasional DC bus protection without compromising safety. Application: heavy machinery drives, conveyors, and automation cabinets. Feature: 45 kAIC interrupt capacity at 415 Vac. Business Impact: enhanced fault current withstand capability, delivering higher reliability in data centers, manufacturing floors, and power panels. Application: environments with significant short-circuit potential and strict uptime targets. Feature: Series C complete breaker with IEC Rated certification and UL-listed documentation. Business Impact: global compliance, faster approvals, and simplified procurement across sites. Application: multinational deployments and OEM builds requiring standardization. Feature: World-class frame and terminal configuration supporting a wide ecosystem of accessories. Business Impact: reduced integration risk and seamless compatibility with existing Eaton MCCB accessories and installation practices. Application: retrofit projects and new builds across diverse industries.

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FAQs

LW3315 uses line and load terminals with an L-frame that supports straightforward mounting in a three-pole configuration. This simplifies wiring drafts and panel assembly, reduces miswiring risk, and aligns with standard Eaton accessory kits. When planning installation, verify panel space, torque values for terminals, and coordination with any modular accessories to ensure seamless integration into existing control panels.
LW3315 is rated for 315A with 690 Vac and 250 Vdc, plus a 45 kAIC interrupt rating at 415 Vac. These specs indicate suitability for high-current three-phase systems and mixed AC/DC environments, with strong fault-current handling and safe disconnection under overload. Understanding these ratings helps ensure proper coordination with upstream protection and motor loads in industrial equipment.
Yes. The LW3315’s three-pole, trip-type T207 and line-load terminals are designed for motor protection in automation panels and motor control centers. Its sturdy L-frame and complete breaker construction provide reliable short-circuit protection, coordinated trip performance, and compatibility with motor starter components, reducing startup delays and maintenance needs in drive-centric applications.
LW3315 carries IEC Rated certification and is supported by UL-listed documentation for Series C MCCBs, facilitating global compliance. These certifications matter because they simplify cross-border procurement, ensure adherence to electrical safety standards, and support regulatory approvals for installations in diverse regions and industries.
Plan for periodic inspection of mechanical operation, trip unit health, and terminal torque during maintenance cycles. Utilize Eaton’s installation guides and service documents to verify trip calibration, accessory compatibility, and replacement part availability. The device’s modular trip and complete breaker design support field servicing, helping to minimize downtime and extend panel longevity in demanding environments.