Eaton / Cutler-HammerND3800T35W
Eaton / Cutler-Hammer ND312T32W Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
ND312T32W
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
ND312T32W
Quantity
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Eaton / Cutler-Hammer ND312T32W - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Eaton / Cutler-Hammer ND312T32W - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | ND312T32W |
| Series | ND |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC |
| Frame Type | NG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | Digitrip 310 |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Lug Kits, Rating Plugs |
|---|---|
| Accessories | Rating Plug Not Included, Without Terminals |
| Standards | CSA C22.2 No. 5.1, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, 80% Rated, True RMS Sensing |
Quantity
Eaton / Cutler-Hammer ND312T32W - 1200A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | ND |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC |
| Frame Type | NG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | Digitrip 310 |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Lug Kits, Rating Plugs |
|---|---|
| Accessories | Rating Plug Not Included, Without Terminals |
| Standards | CSA C22.2 No. 5.1, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, 80% Rated, True RMS Sensing |
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Description
The ND312T32W is a 3-pole, 1200A molded case circuit breaker from Eaton's Series C N-Frame lineup. Designed for industrial applications, it delivers reliable power distribution. This bolt-on MCCB installs into compatible Eaton panelboards, switchboards, and motor control centers. It requires a rating plug and comes without terminals for customizable lug configurations. Equipped with a Digitrip 310 trip unit, it provides adjustable LSI protection and a 50kAIC rating at 480VAC.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | ND312T32W |
| Series | ND |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC |
| Frame Type | NG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | Digitrip 310 |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Lug Kits, Rating Plugs |
|---|---|
| Accessories | Rating Plug Not Included, Without Terminals |
| Standards | CSA C22.2 No. 5.1, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, 80% Rated, True RMS Sensing |
Product FAQs
6 answersAre terminal lugs included with the ND312T32W?
No. The "W" suffix in the catalog number indicates the breaker is supplied without terminals. A compatible lug kit, such as the TA1200NB1, must be sourced separately for cable connections.
Is a rating plug required for this circuit breaker?
Yes, the Digitrip 310 electronic trip unit requires a separate rating plug to operate. For a full 1200A rating, a plug like the 12NES1200T is typically used to set the maximum continuous current.
What wire size does the standard TA1200NB1 lug kit accept?
The TA1200NB1 aluminum lug kit accepts four conductors per phase, with a wire range of 4/0 AWG to 500 kcmil.
How is the trip unit adjusted on this model?
The breaker features a Digitrip 310 electronic trip unit with LSI functionality. Electricians can adjust the Long-Time, Short-Time, and Instantaneous pickup and delay settings using the dials on the face of the trip unit to coordinate with downstream devices.
What equipment is this N-Frame breaker designed to fit?
It is engineered for bolt-on installation in Eaton Series C panelboards, switchboards, and motor control centers.
Can the ND312T32W replace older Westinghouse breakers?
Yes. Eaton Series C N-Frame breakers are electrically interchangeable with legacy Westinghouse N-Frame breakers, making them suitable for retrofitting existing switchboards and motor control centers.
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