Eaton / Cutler-HammerNGS312032E
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Eaton / Cutler-Hammer NGS3120T33E NGS312033E - 1200A 3 Pole Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Unit Mount
Eaton / Cutler-Hammer
NGS3120T33E
NGS312033E - 1200A 3 Pole Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
NGS3120T33E
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Eaton / Cutler-Hammer NGS312033E - 1200A 3 Pole Molded Case Circuit Breaker
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Description
Built for commercial and industrial applications, the Eaton NGS3120T33E is a 1200A, 3-pole MCCB from the Series G NG-Frame line. It utilizes a Digitrip 310+ electronic trip unit to deliver adjustable Long-Time and Short-Time (LS) overcurrent protection. This unit mount breaker installs into compatible Eaton Series G panelboards and switchboards, and serves as a direct replacement for legacy CND312033 breakers. It offers a 50 kAIC interrupting rating at 480VAC and Zone Selective Interlocking.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | NGS3120T33E |
| Series | NGS |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 85kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 500-1200A |
|---|
| Terminal Type | Stud/Tapped Pad |
|---|---|
| For Use With | Eaton Series G Panelboards, Switchboards, Motor Control Centers |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LS |
| Trip Function | Long-Time, Short-Time |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lugs, Handle Lock, Rotary Handle |
|---|---|
| Accessories | Imperial Tapped Terminals |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CCC, CE, CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, 80% Rated, Zone Selective Interlocking |
Product FAQs
7 answersWhat trip functions are adjustable on the NGS3120T33E circuit breaker?
This breaker is equipped with a Digitrip RMS 310+ electronic trip unit featuring LS functions. You can adjust the Long-Time pickup and delay, as well as the Short-Time pickup and delay, allowing for precise selective coordination within your electrical system.
Does the NGS3120T33E include standard wire lugs for installation?
No, this specific catalog number is configured with imperial tapped line and load conductors, also known as stud or tapped pad connections. If you plan to terminate standard copper or aluminum cables, you must purchase the appropriate mechanical or compression lugs separately.
What equipment is the Eaton NGS3120T33E designed to fit?
This NG-frame breaker is engineered for unit-mount installation in Eaton Series G panelboards, switchboards, and motor control centers. Verify that your specific enclosure is rated to accept a 1200-ampere Series G breaker before installation.
Does the Digitrip RMS 310+ trip unit require an external power supply?
No, the Digitrip RMS 310+ is completely self-contained. It derives all necessary sensing and tripping power directly from the current sensors integrated into the breaker, so no external control power is required for standard protection functions.
Is this breaker suitable for both 50 Hz and 60 Hz AC systems?
Yes, the NG-frame circuit breaker and its integrated Digitrip RMS 310+ electronic trip unit are designed to operate reliably on both 50 Hz and 60 Hz alternating current systems.
How does the Short-Time (S) function operate on this trip unit?
For short circuit conditions that exceed the short delay pickup setting, the trip unit initiates a trip after a programmed delay. This allows downstream breakers to clear faults first, minimizing nuisance tripping at the main or feeder level.
What is the difference between the solid state and electronic trip designations for this breaker?
In the context of Eaton Series G breakers, solid state and electronic trip refer to the same technology. The NGS3120T33E uses a microprocessor-based Digitrip RMS 310+ unit to monitor current and execute trip commands, which provides highly accurate true RMS sensing.
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