Eaton / Cutler-Hammer CHND312T33W Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Panel Mount
Quantity
Eaton / Cutler-Hammer CHND312T33W - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for demanding industrial environments, the 1200A, 3-pole CHND312T33W molded case circuit breaker belongs to Eaton's Series C family. It features a Digitrip 310 electronic trip unit configured with LS protection functions. Designed for panel mount applications, this N-Frame breaker integrates seamlessly into Eaton switchboards and panelboards. It is a 100% rated device supplied without terminals. For facility upgrades, note that this model is officially replaced by the PDF53M1200E2NN.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CHND312T33W |
| Series | CHND |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 35kA @ 600VAC |
| Amperage Range | 600-1200A |
|---|
| Frame Type | N |
|---|---|
| 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 | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lug Kits, Rating Plugs, Padlock Attachment |
|---|---|
| Accessories | Without Terminals |
| 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, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
7 answersIs there a newer replacement model for the CHND312T33W?
Yes, Eaton has transitioned from the Series C to the Power Defense line. The official replacement for this 1200A N-Frame breaker is the Power Defense catalog number PDF53M1200E2NN.
Are lug terminals included with the CHND312T33W?
No. The W suffix in the catalog number indicates that this breaker is supplied without terminals. Lugs or bus bar connectors must be sourced separately based on your specific wire size and application requirements.
What does the C prefix in the CHND312T33W part number indicate?
The C prefix designates this as a 100% rated circuit breaker. Unlike standard 80% rated breakers, it is approved for continuous operation at its full 1200A capacity when installed in a properly sized and ventilated enclosure.
Do I need a rating plug to operate this breaker?
Yes, the Digitrip 310 electronic trip unit on this N-Frame breaker requires a compatible rating plug to establish the maximum continuous current rating and make the device operational.
Is the electronic trip unit on the CHND312T33W field-replaceable?
No. The Digitrip trip unit is built as an integral component of the N-Frame breaker and cannot be replaced in the field. Only the rating plug is interchangeable for adjusting the continuous current rating.
Is the CHND312T33W suitable for reverse feed applications?
Yes, this Series C N-Frame breaker is designed to be suitable for reverse feed applications, allowing for flexible installation in control panels and switchboards.
Can the CHND312T33W be operated with the front cover removed?
No. The circuit breaker cover constrains internal moving parts. Operating the breaker without the cover installed poses a severe safety hazard and can result in mechanical failure or arc flash.
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