Eaton / Cutler-HammerND3800T35W
Eaton / Cutler-Hammer ND312T33W Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
ND312T33W
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
ND312T33W
Quantity
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Eaton / Cutler-Hammer ND312T33W - 1200A 3 Pole Molded Case Circuit Breaker
Re-Certified
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Eaton / Cutler-Hammer ND312T33W - 1200A 3 Pole Molded Case Circuit Breaker
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Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | ND312T33W |
| Series | ND |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LS |
| Trip Function | Long-Time, Short-Time |
| 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 ND312T33W - 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 |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LS |
| Trip Function | Long-Time, Short-Time |
| 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
Belonging to the Series C N-Frame line, the ND312T33W is a 3-pole, 1200A molded case circuit breaker. It is engineered for commercial and industrial power systems requiring precise coordination. The bolt-on unit installs into Eaton switchboards, panelboards, and motor control centers. It is an 80% rated breaker that requires a rating plug and is shipped without terminals. Featuring a Digitrip 310 LS trip unit, it provides Long-Time and Short-Time protection with 50kAIC at 480VAC.Specifications
| 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 |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LS |
| Trip Function | Long-Time, Short-Time |
| 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 ND312T33W circuit breaker?
No. The standard ND312T33W catalog number does not include terminal lugs. Line and load lugs must be sourced and installed separately based on the specific wire size and conductor material required for your installation.
Is a rating plug included with this electronic trip unit?
No, this breaker does not come with a rating plug installed. A compatible Eaton Series C N-Frame rating plug is required for the Digitrip 310 RMS trip unit to function and must be ordered separately.
What type of trip unit is installed on this breaker?
It is equipped with a solid-state Digitrip 310 RMS electronic trip unit. The T33W suffix indicates that it provides adjustable Long-Time and Short-Time (LS) overcurrent protection.
Can the ND312T33W be used in direct current (DC) systems?
No. Because this circuit breaker utilizes an RMS sensing electronic trip unit, it is exclusively rated for alternating current (AC) applications up to 600VAC.
Does this circuit breaker provide ground fault protection?
No. The LS trip function code means this model only provides Long-Time and Short-Time protection. If equipment ground fault protection is required, you will need a breaker with an LSG or LSIG trip unit configuration.
Is this breaker a direct replacement for legacy Westinghouse ND breakers?
Yes. Eaton acquired the Westinghouse distribution equipment line, and this Series C N-Frame breaker is a direct physical and functional replacement for older Westinghouse ND312T33W breakers used in existing switchboards and motor control centers.
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