Eaton / Cutler-Hammer NGH312036E Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Bolt-On
Quantity
Eaton / Cutler-Hammer NGH312036E - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Rated for 1200 amps, this Series G NG-Frame circuit breaker incorporates a sophisticated Digitrip 310+ electronic trip unit. The comprehensive LSIG configuration allows precise tuning of long-time, short-time, instantaneous, and ground fault parameters. Designed with stud/tapped pad terminals, the bolt-on breaker integrates into Eaton Series G panelboards and motor control centers. Facilities can also cross-reference this unit to the newer Power Defense PDG53M1200E3NN model.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | NGH312036E |
| Series | NGH |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 35kA @ 600VAC |
| Amperage Range | 480-1200A |
|---|
| Terminal Type | Stud/Tapped Pad |
|---|---|
| For Use With | Eaton Series G 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, 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 | 80% Rated, High Interrupting Capacity, HACR Rated, Reverse Feed, True RMS Sensing |
Product FAQs
7 answersWhat does the "E" suffix mean in the NGH312036E catalog number?
The "E" suffix indicates that this circuit breaker is equipped with imperial tapped line and load conductors rather than metric hardware or pre-installed mechanical lugs.
Do I need to order wiring lugs separately for the NGH312036E?
Yes. This breaker comes standard with imperial tapped pad connections designed for direct busbar mounting. If your installation requires standard cable wiring, you must purchase compatible NG-frame lug kits (such as the Eaton TA1200NB1) separately.
Which enclosures and distribution equipment accept this 1200A NG-frame breaker?
The NGH312036E is designed for bolt-on installation in Eaton Series G Panelboards, Switchboards, and Motor Control Centers that are configured to accommodate the physical footprint of the 1200A NG-frame.
How does the NGH series differ from standard NG-frame circuit breakers?
The "H" in the NGH prefix identifies this as a high-interrupting capacity breaker. It is certified to safely clear fault currents up to 100kA at 240VAC and 65kA at 480VAC, offering elevated protection compared to standard-tier Series G models.
What tuning flexibility does the LSIG Digitrip 310+ trip unit offer?
The LSIG function provides adjustable settings for Long-Time, Short-Time, Instantaneous, and Ground-Fault protection. This allows panel builders to precisely tailor the trip curve to match specific load profiles, manage motor inrush currents, and achieve selective coordination with downstream protective devices.
Is equipment ground-fault protection integrated into this breaker?
Yes. The "G" in the LSIG trip function indicates built-in, adjustable equipment ground-fault protection. It allows you to configure both the pickup current and time delay. Note that if applied in a 4-wire system, an external neutral current transformer (such as the NGFCT120) may be required to properly calculate unbalanced ground-fault currents.
Does this breaker offer a flat-response short-time delay?
Yes. Because this breaker features the LSIG trip unit (indicated by the 36 catalog suffix), it provides a flat-response short-time delay action. This configuration offers better short-circuit selective coordination with downstream devices compared to the standard I2t ramp response found in standard LS trip units.
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