Eaton / Cutler-Hammer NGH312035EC Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Bolt-On
Quantity
Eaton / Cutler-Hammer NGH312035EC - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for demanding power distribution, the NGH312035EC is a 1200A Series G MCCB utilizing a Digitrip 310+ unit for precise LSG protection. Designed for bolt-on installation, it fits Eaton panelboards and switchboards. It also serves as a reliable replacement for the PDG53M1200E5CN. With a 65 kAIC rating at 480VAC, this 100% rated breaker offers true RMS sensing and zone selective interlocking for superior electrical safety.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | NGH312035EC |
| 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 | 600-1200A |
|---|
| 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 | LSG |
| Trip Function | Long-Time, Short-Time, Ground Fault |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator |
|---|---|
| Accessories | Digitrip 310+ Trip Unit |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, HACR, IEC, UL |
| Temp Rating | -20C to 70C |
| Construction Features | 100% Rated, HACR Rated, Current Limiting, Reverse Feed, True RMS Sensing |
Product FAQs
8 answersWhat equipment is the NGH312035EC designed to be installed in?
This NG-frame breaker is engineered for use in Eaton Series G panelboards, switchboards, and motor control centers.
What do the LSG trip functions provide on this breaker?
The LSG designation indicates Long-Time, Short-Time, and Ground-Fault protection. These adjustable electronic functions allow panel builders to precisely coordinate overcurrent, short-circuit, and ground-fault responses with other devices in the system.
Does the NGH312035EC come with lugs for cable termination?
No, this breaker features stud or tapped pad terminals for busbar connections. If you are terminating wire directly to the breaker, you must source and install compatible mechanical or compression lugs separately.
Is the NGH312035EC suitable for reverse feed applications?
Yes, Eaton NG-frame circuit breakers are rated for reverse feed use, allowing flexibility in panelboard and switchboard wiring configurations.
Does this breaker require an external relay for ground-fault protection?
No, the integrated solid-state electronic trip unit includes built-in ground-fault sensing and protection, simplifying installation and eliminating the need for separate ground-fault relays.
How does the solid-state electronic trip unit differ from standard thermal-magnetic breakers?
The electronic trip unit provides highly accurate, adjustable trip settings that remain stable regardless of ambient temperature changes. This allows for tighter coordination and more reliable protection in demanding industrial environments.
Can the trip settings on the NGH312035EC be adjusted in the field?
Yes, the electronic trip unit features adjustable dials for the long-time, short-time, and ground-fault parameters, allowing licensed electricians to configure the breaker to match specific load and coordination requirements.
Is the NGH312035EC suitable for DC voltage applications?
No, this breaker is rated for AC applications only. The solid-state electronic trip unit relies on internal current transformers that require alternating current to function properly.
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