Eaton LDC3450 Complete MCCB - UL 489, Three-pole, 450A

Part Number: LDC3450
LDC3450
Manufacturer
Eaton
Part number
LDC3450
Category

Quick Summary

The Eaton LDC3450 complete molded case circuit breaker is designed to protect industrial power systems in demanding distributions. For engineers facing nuisance trips and miscoordination, this MCCB offers fixed thermal and fixed magnetic trip with precise settings to minimize unnecessary outages. UL 489 listing reinforces safe operation and regulator-ready installations, while Series C design accommodates compact L-frame form factors in control panels. This combination supports reliable protection with line-and-load terminals, 50/60 Hz operation, and straightforward procurement for scalable industrial power distribution projects.

Product Information

Extended Description

LDC3450 Eaton: Eaton Series C complete molded case circuit breaker, L-frame, LDC, Fixed thermal, fixed magnetic trip, Three-pole, 450A, 600 Vac, 250 Vdc, 200 kAIC at 240 Vac, 100 kAIC at 480 Vac, Aluminum, Line and load, 50/60 Hz
Product Name
Eaton Series C complete molded case circuit breaker
Catalog Number
LDC3450
UPC
786679046241
Product Length/Depth
8.25 in
Product Height
8.25 in
Product Width
8.25 in
Product Weight
20 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
450 A
Voltage rating
600 Vac, 250 Vdc
Trip Type
T186
Circuit breaker type
LDC
Circuit breaker frame type
Complete breaker
Series
Series C
Terminals
Line and load
Frame
L
Frequency rating
50 to 60 Hz
Terminal material
Aluminum
Interrupt rating
200 kAIC at 240 Vac 100 kAIC at 480 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 Multi-wire lugs product aid Multi-wire lugs product aid Multi-wire lugs product aid Multi-wire lugs product aid Multi-wire lugs product aid Multi-wire lugs product aid Multi-wire lugs 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: Three-pole Series C complete molded case circuit breaker with fixed thermal and fixed magnetic trip. Business Impact: Improves protection selectivity, reduces nuisance trips, and shortens maintenance windows. Application: Ideal for motor control centers and three-phase feeders in manufacturing lines. Feature: Amperage rating of 450 A. Business Impact: Yes to higher inrush demands and future load growth while avoiding premature upsizing. Application: Suitable for heavy machinery and distribution panels in industrial facilities. Feature: Voltage ratings of 600 Vac and 250 Vdc. Business Impact: Enables safe switching across AC mains and DC bus configurations, streamlining panel design. Application: Power distribution, automation panels, and equipment switchgear. Feature: Interrupt ratings of 200 kAIC at 240 Vac and 100 kAIC at 480 Vac. Business Impact: High fault-current resilience reduces system risk and equipment damage, increasing uptime. Application: Plants with high short-circuit potential and robust protection requirements. Feature: Aluminum terminals and line-load configuration. Business Impact: Robust, corrosion-resistant wiring with easier field installation and reliable electrical connections. Application: Industrial front- and rear-mounted panels with durable terminations. Feature: UL 489 certification. Business Impact: Streamlines procurement and compliance audits, mitigating risk in regulated environments. Application: Global manufacturing facilities and quality-controlled installations that demand standard compliance with MCCB products.

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FAQs

For panel installations, ensure the LDC3450 is mounted in a temperature-controlled enclosure with proper clearances for line and load connections. Use appropriate torque on aluminum terminals, verify correct three-pole configuration, and align the device with UL 489 requirements. Plan for solid mounting, accessible wiring, and compatibility with existing lugs and accessories to maintain protection coordination and ease of maintenance.
The LDC3450 provides fixed thermal and fixed magnetic trip (T186) on a three-pole frame, offering precise overload and short-circuit protection. Its 450 A rating supports higher inrush motors, while the 600 Vac / 250 Vdc ratings accommodate common motor feeders and DC bus links. This combination helps prevent unwarranted trips, protects motors, and simplifies coordination with downstream protection devices.
Yes. The LDC3450 uses line-and-load terminals and is designed to work with common MCCB accessories such as multi-wire lugs and relevant adapters. Aluminum termination provides robust, corrosion-resistant connections suitable for industrial environments. When selecting accessories, verify compatibility with Series C devices to maintain electrical integrity and protection performance.
The LDC3450 is UL 489 certified, which confirms it meets recognized safety and performance standards for molded case circuit breakers. This certification supports regulatory compliance, qualification for code-based installations, and streamlined procurement in regulated industries. Always cross-check local electrical codes to ensure alignment with project-specific certification requirements.
The LDC3450 contributes to ROI through reduced unplanned downtime, improved protection coordination, and simplified maintenance planning. Its high interrupt rating (200 kAIC at 240 Vac) minimizes fault damage, while its robust aluminum terminations accelerate wiring and commissioning. Over the equipment lifecycle, this translates to lower maintenance costs, fewer panel revisions, and faster project completion.