Eaton / Cutler-Hammer NGC312039E Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Bolt-On
Quantity
Eaton / Cutler-Hammer NGC312039E - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Providing comprehensive circuit protection, the Eaton NGC312039E is a 3-pole, 1200A Series G molded case circuit breaker. It features a Digitrip 310+ electronic trip unit for configurable coordination. This bolt-on NG-frame breaker installs into Eaton Pow-R-Line C panelboards and switchboards. It utilizes imperial tapped terminals and is 80% rated. Rated for 100 kAIC at 480VAC, it delivers ALSIG protection with ground fault sensing and an Arcflash Reduction Maintenance System.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | NGC312039E |
| Series | NGC |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480VAC, 50kA @ 600VAC |
| Amperage Range | 500-1200A |
|---|
| Frame Type | NG |
|---|---|
| Terminal Type | Stud/Tapped Pad |
| For Use With | Eaton Series G Panelboards, Switchboards, Motor Control Centers, Pow-R-Line C Panelboards |
| 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, Motor Operator, Rotary Handle, Lug Kits |
|---|---|
| Accessories | Imperial Tapped Terminals |
| 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, Reverse Feed, 80% Rated, True RMS Sensing, Arcflash Reduction Maintenance System |
Product FAQs
7 answersDoes the Eaton NGC312039E come with lug terminals included?
No. Eaton NG-frame circuit breakers do not ship with lugs. The unit is equipped with standard imperial-tapped stud and pad terminals for bolt-on connections. You must source the appropriate line and load lugs separately based on your specific wire size requirements.
What thread standard is used for the terminal pads on this breaker?
The "E" suffix at the end of the catalog number signifies that the breaker uses imperial-tapped line and load conductor terminals. Metric mounting hardware cannot be used on this specific unit.
Can the Eaton NGC312039E be used in reverse feed applications?
Yes. All Eaton NG-frame molded case circuit breakers are suitable for reverse feed installations.
Is the NGC312039E considered a 100% or 80% rated circuit breaker?
This unit is a standard 80% rated circuit breaker. In Eaton's Series G nomenclature, a 100% rated version of this frame would require a "C" suffix in the catalog number.
What does the "39" in the catalog number indicate about the trip unit?
The "39" indicates the breaker is equipped with a Digitrip 310+ electronic ALSIG trip unit. This provides fully adjustable Long-Time, Short-Time, Instantaneous, and Ground-Fault protection, as well as an integrated Arcflash Reduction Maintenance System (ARMS).
Does this breaker feature an energy-reducing maintenance switch?
Yes. The included ALSIG trip unit features Eaton's Arcflash Reduction Maintenance System (ARMS). When activated, this mode reduces the clearing time of the breaker during a fault, lowering the incident energy and improving safety for personnel working on energized equipment.
What electrical equipment is this circuit breaker designed to be installed in?
The NGC312039E is engineered for use within Eaton Series G panelboards, switchboards, motor control centers, and Pow-R-Line C panelboards.
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