Eaton LDB2400W Molded Case Circuit Breaker - UL489
Part Number: LDB2400W
Quick Summary
Eaton LDB2400W Molded Case Circuit Breaker protects electrical systems by interrupting fault currents in panelboards and motor control centers. Designers often face the challenge of matching a Series C MCCB to a compact footprint while ensuring quick, reliable tripping under fault conditions. This product carries UL 489 certification and UL Listed status, supporting safety compliance in typical industrial installations. With a 400 A rating and 65 kAIC at 240 Vac (35 kAIC at 480 Vac), it delivers robust protection for critical loads in 50/60 Hz environments. By integrating a complete L-frame MCCB with a fixed thermal-magnetic trip and shunt-trip option, it offers installation flexibility and measurable uptime benefits for panel builders and machine builders.
Product Information
Extended Description
LDB2400W Eaton: Eaton Series C complete molded case circuit breaker, L-frame, LDB, Complete breaker, Fixed thermal, fixed magnetic trip type, Two-pole, 400A, 65 kAIC at 240 Vac, 35 kAIC at 480 Vac, Without terminals, 50/60 Hz
Product Name
Eaton Series C complete molded case circuit breaker
Catalog Number
LDB2400W
UPC
786679148419
Product Length/Depth
4.06 in
Product Height
8.25 in
Product Width
8.25 in
Product Weight
18 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
UL 489
Amperage Rating
400 A
Trip Type
T186
Circuit breaker type
LDB
Circuit breaker frame type
Complete breaker
Series
Series C
Shunt trip
Mil-Spec HI shock 115V with 50 in pigtail leads
Terminals
Without terminals
Frame
L
Frequency rating
50 to 60 Hz
Interrupt rating
65 kAIC at 240 Vac 35 kAIC at 480 Vac
Number of poles
Two-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
Motor protection circuit breakers product aid
Motor protection circuit breakers product aid
Motor protection circuit breakers product aid
Motor protection circuit breakers product aid
Motor protection circuit breakers product aid
Motor protection circuit breakers product aid
Motor protection circuit breakers product aid
Breaker service centers
Circuit Protection, Molded Case Circuit Breakers, Volume 4, Tab 2
Circuit Breakers Explained
Circuit Breakers Explained
MOEM MCCB product selection guide
MOEM MCCB product selection guide
MOEM MCCB product selection guide
MOEM MCCB product selection guide
MOEM MCCB product selection guide
Feature: Fixed thermal-magnetic trip provides fast, reliable fault interruption. Business Impact: Reduces downtime and equipment damage by limiting fault currents during faults in panelboards and motor control centers. Application: Ideal for industrial automation and process equipment where uptime matters. Feature: 400 A amperage rating with 65 kAIC at 240 Vac and 35 kAIC at 480 Vac. Business Impact: Enables protection for high-current feeders and large motors with fewer devices, cutting inventory and installation time. Application: Power distribution in manufacturing lines and heavy machinery setups.Feature: L-frame, Series C, complete breaker design. Business Impact: Facilitates straightforward replacement and compatibility within existing switchgear footprints, lowering retrofit risk. Application: New and upgraded MCCB installations in control panels and machine centers.Feature: Shunt trip option (Mil-Spec HI 115V with 50 in pigtail leads). Business Impact: Enhances safety interlock capabilities and remote tripping for remote monitoring systems. Application: Hazardous or high-availability environments requiring rapid isolation.Feature: Terminals without terminals. Business Impact: Encourages clean bus-bar connections with compatible accessories, reducing terminal clutter and enabling flexible wiring approaches. Application: Panel studios and custom control cabinets where terminal configuration is tailored to the installation.Feature: UL 489 certified. Business Impact: Demonstrates compliance with safety standards, aiding code approvals and downstream procurement. Application: Industrial panels, motor control centers, and panelboards across manufacturing and process industries.
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FAQs
The LDB2400W is a two-pole molded case circuit breaker in an L-frame, designed for use without terminals on the device itself. Installers should plan for compatible lugs or terminal accessories and ensure proper bus-bar connections within the Series C footprint. Verify 50/60 Hz compatibility and ensure correct mounting orientation to maintain reliable trip performance and ease of maintenance.
The unit is rated for 400 A with an interrupt rating of 65 kAIC at 240 Vac and 35 kAIC at 480 Vac. It operates at 50/60 Hz and includes a fixed thermal-magnetic trip (T186) with an optional shunt trip at 115 V. The product is UL 489 certified and fits a two-pole configuration in Series C frame L.
Yes. The LDB2400W is a complete Series C molded case circuit breaker in an L-frame, designed for two-pole protection in panelboards and motor control centers. It is compatible with standard Series C MCCB configurations and supports fixed thermal-magnetic tripping, along with optional shunt trip for enhanced safety interlocks.
UL 489 certification ensures the breaker meets recognized safety and performance standards for MCCBs used in electrical protection. The UL Listed status further confirms compliance with typical electrical codes used in industry. These certifications help with code approvals, supplier qualification, and consistent performance in industrial environments.
The product follows Eaton’s warranty terms (25-000): one year from installation or eighteen months from shipment, whichever occurs first. This policy supports coverage during initial commissioning and early field use, providing assurance on performance and material integrity for critical protection devices.