Eaton / Cutler-Hammer CNDC312T32W Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Panel Mount
Quantity
Eaton / Cutler-Hammer CNDC312T32W - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Delivering an impressive 100 kAIC interrupting capacity at 480V, this 100% rated molded case circuit breaker ensures superior fault clearing for heavy industrial applications. It features an advanced Digitrip 310 RMS electronic trip unit with adjustable long-time, short-time, and instantaneous protection. Designed for panel-mount installations, it integrates perfectly with Eaton Pow-R-Line panelboards, switchboards, and motor control centers.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | CNDC |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480VAC, 50kA @ 600VAC |
| Amperage Range | 500-1200A |
|---|
| Frame Type | NG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Pow-R-Line Panelboards, Switchboards, Motor Control Centers |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Lugs, Rating Plug, Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Digitrip 310 RMS Trip Unit |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | 100% Rated, HACR Rated, Current Limiting, True RMS Sensing |
Product FAQs
6 answersWhat does the "C" in the CNDC312T32W catalog number signify?
The "C" indicates that this breaker is 100% rated. Unlike standard 80% rated breakers, it can carry its full 1200A continuous current rating in an enclosure without derating, provided it is installed with appropriately sized conductors and a compatible enclosure.
What trip unit is installed in this breaker?
The CNDC312T32W features a Digitrip 310 RMS electronic trip unit. The "T32" in the catalog number designates Long-Time, Short-Time, and Instantaneous (LSI) protection functions, allowing for precise coordination in complex electrical systems.
Does the CNDC312T32W require a rating plug to operate?
Yes, this breaker requires a separate rating plug, such as the fixed 12NES1200T or adjustable A12NES1200T1, to establish the maximum continuous current rating for the electronic trip unit. The breaker will not function properly without a rating plug installed.
Can I reverse feed the CNDC312T32W circuit breaker?
Yes, all Eaton Series C N-Frame circuit breakers, including the CNDC312T32W, are suitable for reverse feed applications.
What is the difference between the NDC312T32W and the CNDC312T32W?
The NDC312T32W is the standard rated version, which is limited to an 80% continuous load. The CNDC312T32W is the 100% rated version. Both share the same physical N-Frame dimensions and Digitrip 310 LSI trip unit, but the CNDC requires specific enclosure and conductor sizing to utilize its 100% rating.
Is the CNDC312T32W HACR rated?
Yes, all Eaton Series C N-Frame circuit breakers are HACR rated, making them suitable for use with heating, air conditioning, and refrigeration equipment.
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