Built for demanding industrial environments, this 1200A N-Frame breaker offers advanced microprocessor-based sensing. It fits seamlessly into Eaton Series C switchboards, panelboards, and motor control centers. The integrated electronic trip unit features fully adjustable long-time, short-time, instantaneous, and ground fault (LSIG) parameters to optimize system coordination. For modern upgrades, this specific model transitions to the NGH312036E when utilizing Series G equipment.
No. The W at the end of the catalog number indicates this breaker is supplied without terminals. You will need to purchase the appropriate N-Frame lug kits, such as the TA1000NB1 or TA1200NB1, separately based on your conductor size requirements.
Is a rating plug required to operate the HND312T36W?
Yes. Like most Eaton N-Frame circuit breakers with a Digitrip 310 RMS trip unit, this model requires a rating plug installed to establish the maximum continuous current rating and make the breaker operational.
What is the Series G direct replacement for the HND312T36W?
For modern upgrades utilizing Eaton Series G equipment, the HND312T36W crosses over to the NGH312036E molded case circuit breaker.
Can the electronic trip unit on the HND312T36W be replaced in the field?
No. The Digitrip 310 RMS trip unit is built as an integral part of the Eaton N-Frame circuit breaker and is not field-replaceable.
Is the HND312T36W rated for 80 percent or 100 percent continuous current?
This HND model is standard 80 percent rated. If your application requires a 100 percent continuous rating, you will need to source the CHND equivalent, which is the CHND312T36W.
What is the recommended torque for mounting screws on Eaton N-Frame breakers?
The recommended torque value for the mounting screws of the terminals, bus connections, and front conductor extensions on Eaton N-Frame breakers is 30 to 35 lb-ft (41 to 47 Nm).
Does the Digitrip 310 trip unit provide internal thermal protection?
Yes. The trip unit contains protective circuitry that will initiate a trip operation for self-protection if the internal ambient temperature at the printed circuit board reaches approximately 90 degrees Celsius.
Is the HND312T36W suitable for reverse feed applications?
Yes. This Eaton Series C circuit breaker is suitable for reverse feed applications, allowing for wiring flexibility when installing in panelboards, switchboards, or motor control centers.
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