Eaton / Cutler-Hammer CNDC312T33W Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Panel Mount
Quantity
Eaton / Cutler-Hammer CNDC312T33W - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for commercial and industrial distribution, this 100% rated MCCB provides robust current-limiting performance with a 100 kAIC rating at 480V. The integrated Digitrip 310 electronic trip unit allows for adjustable long-time and short-time pickup settings, optimizing system coordination. It mounts into Eaton Pow-R-Line panelboards, switchboards, and motor control centers, offering reliable reverse feed capability and HACR-rated protection.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CNDC312T33W |
| Series | CNDC |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480VAC, 50kA @ 600VAC |
| Amperage Range | 600-1200A |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Pow-R-Line Panelboards, Switchboards, Motor Control Centers |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LS |
| Trip Function | Long-Time, Short-Time |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch, Alarm Switch, Lugs, Rating Plugs |
|---|---|
| Accessories | Digitrip 310 Trip Unit |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | 100% Rated, HACR Rated, Current Limiting, Reverse Feed |
Product FAQs
7 answersAre terminal lugs included with the CNDC312T33W?
No, this breaker is supplied without terminal lugs. You must purchase N-Frame compatible lug kits separately, such as the TA1200NB1, which accepts four 4/0 AWG to 500 kcmil cables per phase.
Does the CNDC312T33W require a rating plug to operate?
Yes, the Digitrip RMS 310 trip unit requires a compatible N-Frame rating plug to function. The rating plug establishes the maximum continuous current and must be installed prior to energizing the breaker.
What does the C prefix in the CNDC312T33W catalog number signify?
The C prefix indicates that this is a 100 percent rated circuit breaker. It is approved for continuous operation at 100 percent of its 1200A frame rating when installed in an enclosure with the required minimum dimensions and ventilation.
What protection functions does the Digitrip RMS 310 trip unit provide?
This specific trip unit features adjustable Long-Time and Short-Time (LS) protection functions, allowing for precise system coordination in commercial and industrial distribution networks.
Is the CNDC312T33W suitable for HVAC applications?
Yes, this breaker is HACR rated, making it approved for use with commercial heating, air conditioning, and refrigeration equipment.
Can this N-Frame circuit breaker be reverse fed?
Yes, the CNDC312T33W is capable of being reverse fed, allowing for flexible installation in switchboards and motor control centers.
What equipment is compatible with this 1200A breaker?
It is designed for use in Eaton Pow-R-Line panelboards, switchboards, and motor control centers that accept Series C N-Frame breakers.
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