Eaton / Cutler-HammerNGS312032E
Eaton / Cutler-Hammer NGS312035E Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Unit Mount
Eaton / Cutler-Hammer
NGS312035E
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
NGS312035E
Quantity
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Eaton / Cutler-Hammer NGS312035E - 1200A 3 Pole Molded Case Circuit Breaker
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Description
The NGS312035E is an industrial-grade molded case circuit breaker from Eaton's Series G family, designed for commercial and industrial power distribution. It serves as a reliable replacement for legacy ND312035 units, fitting seamlessly into compatible panelboards, switchboards, and motor control centers. Rated for 85 kAIC at 240VAC, this 1200A breaker utilizes a microprocessor-based Digitrip 310+ unit to deliver precise, adjustable long-time, short-time, and ground fault (LSG) protection.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| 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 |
|---|
| Frame Type | NGS |
|---|---|
| Terminal Type | Stud/Tapped Pad |
| For Use With | Eaton Series G Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 4 AWG, 500 kcmil |
| 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, Lugs, Handle Lock, Rotary Handle |
|---|---|
| Accessories | Digitrip 310+ Trip Unit, Auxiliary Switch |
| Standards | CSA C22.2 No. 5, HACR Rated, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, HACR, IEC, KEMA KEUR, UL |
| Temp Rating | -20C to 70C |
| Construction Features | HACR Rated, Reverse Feed, 80% Rated, Zone Selective Interlocking |
Product FAQs
6 answersDoes the Eaton NGS312035E come with mounting lugs included?
No, the NGS312035E is supplied with imperial tapped line and load terminals for bolt-on connections. Mechanical or compression lugs are typically sold separately and must be selected based on your specific conductor requirements for 4 AWG to 500 kcmil wire.
What trip functions are included on the NGS312035E circuit breaker?
This breaker features a Digitrip 310 electronic trip unit equipped with LSG functions. This provides adjustable Long-Time, Short-Time, and Ground-Fault protection, allowing for precise coordination in complex electrical systems.
Which enclosures and panels are compatible with the NGS312035E?
The NGS312035E is an NG-frame breaker designed for use in Eaton Series G panelboards, switchboards, and motor control centers. It is also commonly used to upgrade or replace older ND-frame breakers in existing Cutler-Hammer installations.
Can the trip unit on the NGS312035E be adjusted in the field?
Yes, the solid-state electronic trip unit is fully adjustable. Electricians can fine-tune the long-time, short-time, and ground-fault settings directly on the breaker face to match specific load and coordination requirements.
Does this breaker require a separate rating plug?
No, the NGS312035E with the Digitrip 310 electronic trip unit does not require a separate rating plug. The 1200A continuous current rating and trip adjustments are configured directly on the trip unit itself.
What is the maximum interrupting capacity for this 1200A breaker?
The NGS312035E is rated to safely interrupt up to 85kA at 240VAC, 50kA at 480VAC, and 25kA at 600VAC. These ratings make it suitable for high-fault commercial and industrial power distribution networks.
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