Eaton / Cutler-Hammer MDLB3800FT36W Molded Case Circuit Breaker
- 800A
- 3 Pole
- Unit Mount
Quantity
Eaton / Cutler-Hammer MDLB3800FT36W - 800A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for demanding industrial environments, this 800A electronic trip MCCB delivers reliable power distribution and equipment defense. It integrates seamlessly into Eaton Series C switchboards, panelboards, and motor control centers via a unit mount design. The factory-sealed breaker utilizes a Digitrip 310+ trip unit with adjustable long-time, short-time, instantaneous, and ground fault (LSIG) parameters. It replaces the legacy MDLB3800T36W and provides 50 kAIC interrupting capacity at 480V.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | MDL |
| Amperage | 800A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC, 22kA @ 250VDC |
| Frame Type | MDL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSIG |
| Trip Function | Long-Time, Short-Time, Instantaneous, Ground Fault |
| 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
5 answersWhat equipment is the Eaton MDLB3800FT36W compatible with?
This 800A MDL-frame breaker is designed for use in Eaton and Cutler-Hammer Series C panelboards, switchboards, and motor control centers.
What advantages does the electronic LSIG trip unit offer on the MDLB3800FT36W?
The adjustable electronic trip unit provides Long-Time, Short-Time, Instantaneous, and Ground-Fault (LSIG) protection. This allows licensed electricians to precisely tune the breaker's trip curve for optimal system coordination and provides integrated ground-fault protection without requiring external relays.
How is the MDLB3800FT36W mounted within a panelboard or switchboard?
It features a unit mount, feed-thru connection design. This means the breaker is bolted directly to the chassis or mounting pan of compatible Eaton Series C enclosures and uses lugs for secure wire terminations.
Will this breaker replace an older Cutler-Hammer MDLB3800FT36W?
Yes. Because Eaton acquired Cutler-Hammer, the Series C MDL-frame breakers are fully interchangeable. A modern Eaton MDLB3800FT36W will directly replace an older Cutler-Hammer branded model with the exact same catalog number.
Does the MDLB3800FT36W require an external ground-fault relay?
No. The "G" in its LSIG trip function indicates that ground-fault protection is built directly into the electronic trip unit, simplifying installation and saving space in the panelboard or switchboard.
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