Eaton / Cutler-Hammer CND312T33W Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Unit Mount
Quantity
Eaton / Cutler-Hammer CND312T33W - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Designed for industrial facilities, the CND312T33W is a 1200A, 3-pole MCCB from the Eaton Series C lineup. It provides heavy-duty branch circuit protection using a proven N-Frame design. This unit-mount MCCB integrates into Eaton Series C panelboards and switchboards. As a 100% rated device, it carries its full 1200A load continuously, serving as an upgrade for the 80% rated ND312T33W. It features a Digitrip 310 RMS electronic trip unit with adjustable LS settings and 50kAIC at 480V.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CND312T33W |
| Series | CND |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 85kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 600-1200A |
|---|
| Frame Type | ND |
|---|---|
| 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 |
| Available Options | Lugs, Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Rating Plugs, Padlock Attachment |
|---|---|
| Accessories | Without Terminals |
| Standards | CSA C22.2 No. 5.1, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | 100% Rated, HACR Rated, Reverse Feed, True RMS Sensing, Non-Interchangeable Trip |
Product FAQs
7 answersWhat is the difference between the CND312T33W and the ND312T33W?
The C in the CND prefix designates that the breaker is 100 percent rated, meaning it can carry its full 1200A load continuously. The standard ND312T33W is an 80 percent rated device.
What does the 33W in the catalog number signify?
The 33W indicates the breaker is equipped with a Digitrip 310 RMS electronic trip unit featuring adjustable Long-Time and Short-Time (LS) trip functions.
What enclosures are compatible with this breaker?
This N-frame breaker is designed to integrate into Eaton Series C panelboards, switchboards, and motor control centers.
Can the CND312T33W be reverse fed?
Yes, this molded case circuit breaker is suitable for reverse feed applications.
What adjustments can be made on the LS electronic trip unit?
The LS designation allows you to adjust the Long-Time pickup and delay for overload protection, as well as the Short-Time pickup and delay for short-circuit coordination.
Is this a complete breaker or just the frame?
The CND312T33W is a complete, fully assembled circuit breaker that includes both the 1200A N-frame and the electronic trip unit.
Is this circuit breaker HACR rated?
Yes, the CND312T33W carries an HACR rating, making it suitable for use with heating, air conditioning, and refrigeration equipment.
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