Eaton / Cutler-Hammer NGH308038E Molded Case Circuit Breaker
- 800A
- 3 Pole
- Bolt-On
Quantity
Eaton / Cutler-Hammer NGH308038E - 800A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
The NGH308038E is an 800A molded case circuit breaker from Eaton's Series G family. It uses a Digitrip 310+ electronic trip unit for precise ALSI protection and features an Arcflash Reduction Maintenance System for enhanced safety. This bolt-on NG-frame breaker fits Eaton Series G panelboards and switchboards. It serves as a replacement, superseded by the PDG53M0800E3ZN. Rated 65 kAIC at 480V, it provides adjustable trip settings for superior system coordination.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | NGH |
| Amperage | 800A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 35kA @ 600VAC |
| Amperage Range | 320-800A |
|---|
| Frame Type | NG |
|---|---|
| Terminal Type | Stud/Tapped Pad |
| For Use With | Eaton Series G 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, Motor Operator, Handle Mechanism, Lug Kits |
|---|---|
| Accessories | Lugs Not Included, Mounting Hardware |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489 |
| Approval | CCC, CE, CSA, HACR, IEC, UL |
| Temp Rating | -20C to 70C |
| Construction Features | HACR Rated, Current Limiting, Reverse Feed, 80% Rated, True RMS Sensing, Arcflash Reduction Maintenance System |
Product FAQs
6 answersWhat specific protection functions does the ALSI trip unit provide on the NGH308038E?
The Digitrip 310+ ALSI electronic trip unit offers adjustable long-time, short-time, and instantaneous overcurrent protection, plus an Arcflash Reduction Maintenance System (ARMS) to lower incident energy during live work.
What type of line and load connections does the NGH308038E feature?
The E suffix in the catalog number indicates imperial tapped stud and pad connections. It does not include standard wire lugs, which must be ordered separately if your installation requires them.
How does the Arcflash Reduction Maintenance System (ARMS) operate on this breaker?
When the maintenance mode is enabled, the trip unit bypasses standard time delays and uses an accelerated instantaneous trip setting. This clears downstream faults faster, reducing the arc flash boundary and improving personnel safety.
Is the NGH308038E rated for 100 percent continuous operation?
No, this model is standard 80 percent rated. For continuous loads, the maximum sustained current should not exceed 640 amps, which is 80 percent of its 800A frame rating.
Can the NGH308038E replace older Cutler-Hammer branded NG-frame breakers?
Yes. Eaton acquired Cutler-Hammer, and the Series G NG-frame dimensions and mounting hardware remain identical. This unit will directly retrofit into existing Cutler-Hammer panelboards and switchboards designed for 800A NG frames.
Does this breaker support zone selective interlocking (ZSI)?
The standard NGH308038E does not include zone selective interlocking. In the Eaton Series G catalog, ZSI requires a specific feature suffix (ZG) added to the trip unit designation.
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