Eaton / Cutler-Hammer MDLB3800FT32W Molded Case Circuit Breaker
- 800A
- 3 Pole
- Unit Mount
Quantity
Eaton / Cutler-Hammer MDLB3800FT32W - 800A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Rated at 65kAIC at 240V, the Eaton MDLB3800FT32W is a high-performance Series C molded case circuit breaker designed for industrial power distribution. This 3-pole, 800A unit mount MCCB features a factory-sealed Digitrip 310+ electronic trip unit, providing adjustable long-time, short-time, and instantaneous (LSI) protection with true RMS sensing. It is HACR rated and fully capable of reverse feed operations. The breaker serves as a seamless upgrade for the older MDLB3800T32W model.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | MDL |
| Amperage | 800A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC |
| Frame Type | MDL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Lug Kits |
|---|---|
| Accessories | Without Terminals |
| 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 | Non-Interchangeable Trip, Digitrip 310+ Trip Unit, True RMS Sensing, HACR Rated, Reverse Feed |
Product FAQs
8 answersWhat equipment is compatible with the MDLB3800FT32W circuit breaker?
This MDL-frame breaker is engineered for integration into Eaton Series C panelboards, switchboards, and motor control centers. Always verify your specific enclosure size and busbar configuration to ensure proper fitment.
What do the LSI trip functions on this breaker provide?
The LSI designation means the electronic trip unit has adjustable Long-Time delay, Short-Time delay, and Instantaneous pickup. These adjustable settings allow electricians to precisely coordinate the breaker with other protective devices in the system.
Which specific electronic trip unit is included with this model?
The FT32 in the catalog number indicates that this breaker is equipped with an Eaton Digitrip 310+ electronic trip unit.
Does the MDLB3800FT32W require a separate rating plug?
No, the included Digitrip 310+ electronic trip unit features integrated adjustability and does not require an external rating plug for operation.
Can this breaker replace older Eaton or Cutler-Hammer MDL models?
Yes, this Series C breaker shares the same physical dimensions as older MA, MD, and MDL frame breakers. It serves as a direct replacement when the capacity and LSI trip functions match your system requirements.
What does a unit mount configuration mean for this circuit breaker?
Unit mount indicates that the breaker is bolted directly to the mounting surface or chassis of the switchboard or panelboard, rather than plugging onto a busbar.
How are the wire connections made on the MDLB3800FT32W?
This feed-thru breaker uses lug terminals to secure the line and load conductors. Ensure all connections are properly torqued to the manufacturer specifications provided on the breaker label during installation.
Is this breaker compatible with zone selective interlocking?
Yes, the Digitrip 310+ LSI trip unit supports zone selective interlocking. This feature allows the breaker closest to a fault to trip instantaneously while overriding preset delays, improving overall system protection.
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