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Eaton / Cutler-Hammer MDL3700 Molded Case Circuit Breaker
- 700A
- 3 Pole
- Unit Mount
Eaton / Cutler-Hammer
MDL3700
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
MDL3700
Quantity
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Eaton / Cutler-Hammer MDL3700 - 700A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial applications, the Eaton MDL3700 is a 700A, three-pole molded case circuit breaker from the Series C family. It provides reliable overcurrent protection for heavy-duty electrical systems. This unit-mount M-frame breaker installs into compatible Eaton panelboards, switchboards, and motor control centers. It accepts (3) 3/0 AWG to 400 kcmil aluminum or copper wire.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | MDL3700 |
| Series | MDL |
| Amperage | 700A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC, 22kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | (3) 3/0 AWG-400 kcmil (Al/Cu) |
| Max Wire | 400 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs |
| Standards | HACR Rated, UL 489, CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Interchangeable Trip |
Product FAQs
5 answersWhat wire sizes are supported by the standard lugs on this breaker?
The standard lugs accept three conductors per phase, ranging from 3/0 AWG to 400 kcmil for both aluminum and copper wire (Al/Cu).
What is the difference between the MDL3700 and the HMDL3700?
The primary difference is the interrupting capacity. The MDL3700 is rated at 50kAIC at 480VAC, while the HMDL3700 is a high-interrupting version rated at 65kAIC at 480VAC.
Are the thermal and magnetic trip settings adjustable on the MDL3700?
No, this breaker features a thermal-magnetic trip unit with fixed thermal and fixed magnetic settings for its long-time and instantaneous (LI) protection functions.
Can this breaker be installed in older Westinghouse panels?
Yes, Eaton Series C breakers are backward compatible with legacy Cutler-Hammer and Westinghouse Series C panelboards and switchboards.
Does the MDL3700 require a specific mounting hardware kit?
As a unit-mount breaker, it bolts directly to the mounting surface or panel rather than plugging into a busbar. Specific hardware depends on the panelboard or switchboard chassis being used.
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