Eaton Cutler Hammer CNDC312T36W 1200A 3 Poles Molded Case Circuit Breaker – Bolt-On Mount – 600VAC

The Eaton / Cutler Hammer CNDC312T36W Molded Case Circuit Breaker is a heavy-duty electrical protection device designed for industrial and commercial power distribution systems. Built with the CNDC frame style and equipped with the Digitrip RMS 310 electronic non-interchangeable trip unit, this breaker provides advanced LSIG protection functions—Long Delay, Short Delay, Instantaneous, and Ground Fault. With a 1200 Ampere rating at 40°C and ultra-high interrupting capacity, the breaker delivers precise circuit protection against overloads, short circuits, instantaneous faults, and ground faults, ensuring reliable and safe operation in demanding electrical installations.

Product Specifications

• Brand: Eaton / Cutler Hammer
• Model: CNDC312T36W
• Breaker Type: Molded Case Circuit Breaker (MCCB)
• Frame Style: CNDC Frame
• Trip Unit: Digitrip RMS 310 Electronic Non-Interchangeable
• Trip Functions: LSIG (Long Delay, Short Delay, Instantaneous, Ground Fault)
• Mount Type: Bolt-On
• Rated Current: 1200 Amperes
• Number of Poles: 3 Pole
• Rating Plug: Not Included
• Standard Lug Type: Not Included
• Warranty: 1 Year

Technical Specifications

• Trip Technology: Electronic Trip Unit (Digitrip RMS 310)
• Long Delay Pickup: Adjustable via rating plug
• Short Delay Pickup: Adjustable with selectable delay response
• Short Delay Response: I²T (inverse time) or flat response
• Instantaneous Pickup: Adjustable by setting short delay time to instantaneous
• Ground Fault Pickup: Adjustable
• Ground Fault Delay: Adjustable with flat response
• Frame Temperature Rating: 40°C
• Frame Type: N Frame
• Operating Frequency: 50/60 Hz

Voltage and Ratings

• Maximum Operating Voltage: 600 VAC
• Frequency Rating: 50/60 Hz
• Interrupting Capacity:
  • 200 kA @ 240 VAC
  • 100 kA @ 480 VAC
  • 50 kA @ 600 VAC

Product Data

• Manufacturer: Eaton / Cutler Hammer
• Product Series: CNDC
• Amperage Rating: 1200 A
• Number of Poles: 3
• Mounting Style: Bolt-On
• Frame Type: N Frame
• Application: Industrial and commercial electrical power distribution systems requiring advanced fault protection

Important Note

This circuit breaker requires a rating plug to function, which is not included with the base unit. The correct rating plug must be installed before operation to ensure proper protection and performance. Product images may represent a base configuration and are provided for identification purposes only. If accessories are purchased with the breaker, they can typically be installed before shipment to match your required configuration at no additional cost.

Returns are easy

You may return items within 10 days of delivery for a refund.

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