Eaton MDL3700H09 Molded Case Circuit Breaker - UL Listed

Part Number: MDL3700H09
Manufacturer
Eaton
Part number
MDL3700H09

Quick Summary

MDL3700H09 molded case circuit breaker protects electrical panels in industrial applications. This device delivers reliable overcurrent protection for large motor loads and feeder circuits while simplifying panel design and maintenance. UL Listed and Naval-class construction support rugged, mission-critical installations, with 600 Vac and 250 Vdc ratings enabling mixed AC-DC controls. As systems scale, the Series C MDL frame offers consistent protection and easy procurement, reducing downtime and maintenance costs while aligning with standard Eaton accessories for fast integration.

Product Information

Extended Description

MDL3700H09 Eaton: Eaton Series C complete molded case circuit breaker, MDL-frame, MDL, Complete breaker, Fixed thermal, fixed magnetic trip type, Three-pole, 700A, 600 Vac, 250 Vdc, 65 kAIC at 240 Vac, 50 kAIC at 480 Vac, Naval, 50/60 Hz
Product Name
Eaton Series C complete molded case circuit breaker
Catalog Number
MDL3700H09
UPC
782116035939
Product Length/Depth
0.01 in
Product Height
0.01 in
Product Width
0.01 in
Product Weight
0.01 lb
Certifications
UL Listed
Amperage Rating
700 A
Voltage rating
600 Vac, 250 Vdc
Trip Type
T186
Circuit breaker type
MDL
Circuit breaker frame type
Complete breaker
Series
Series C
Frame
MDL
Class
Naval
Interrupt rating
65 kAIC at 240 Vac 50 kAIC at 480 Vac
Number of poles
Three-pole
Feature: MDL frame Series C complete molded case breaker with three poles. Business Impact: provides a compact, standardized protection solution that simplifies panel layout and parts stocking. Application: ideal for three-phase feeders in industrial control panels and marine or offshore equipment. Feature: 700 A amperage rating across 600 Vac / 250 Vdc. Business Impact: supports high inrush and continuous loads with fewer nuisance trips. Application: main feeders and motor control centers in factories and ships. Feature: Interrupt ratings of 65 kAIC at 240 Vac and 50 kAIC at 480 Vac. Business Impact: enhances safety by rapidly interrupting high fault currents, reducing damage. Application: power distribution networks with elevated fault potential. Feature: Fixed thermal-magnetic trip (T186). Business Impact: predictable coordination and reliable protection across varying loads. Application: critical machinery and equipment requiring fast, consistent trips. Feature: Three-pole Naval class construction. Business Impact: rugged performance in harsh environments and compliance with specialized applications. Application: shipboard and industrial environments with demanding duty cycles. Feature: UL Listed certification. Business Impact: streamlines approvals and ensures electrical code compliance. Application: broad installation scenarios across industrial facilities and marine settings. Feature: Compatibility with Series C accessories (e.g., multi-wire lug options). Business Impact: easier installation, retrofit, and future expansion. Application: retrofit projects and new builds where accessory versatility saves time and cost.

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FAQs

The MDL3700H09 is designed for three-phase protection in industrial control panels and naval/marine installations. With a 700 A rating and 600 Vac / 250 Vdc capability, it suits large motor feeders and complex distribution systems where reliability and rapid fault response are critical.
The fixed thermal-magnetic trip combines a long-time thermal element with a magnetic trip for instantaneous response to short circuits. This ensures predictable coordination across loads, reduces nuisance trips on motor startups, and provides consistent protection under varying temperature and load conditions.
65 kAIC at 240 Vac and 50 kAIC at 480 Vac indicate the maximum fault current the device can interrupt safely at those voltages. This translates to enhanced protection for high-demand applications, minimizing equipment damage and enabling safer shutdowns during faults in industrial and marine environments.
MDL3700H09 supports Series C accessory families, including multi-wire lugs, plug-in adapters, and motor protection options. Compatibility with these accessories simplifies installation, future expansion, and serviceability across panel builds and upgrades.
Yes. The device is UL Listed and classified as Naval, indicating suitability for rugged environments and compliant electrical protection. This makes it a dependable choice for industrial plants and shipboard or offshore applications that demand durable protection solutions.