Built as a circuit breaker frame, the Siemens ND63F120 has 3 poles and a frame amperage of 1200A. Its voltage ratings are 600VAC and 500VDC. Interrupting ratings are 65kA at 240VAC and 50kA at 480VAC. At 600VAC and 500VDC, the interrupting rating is 25kA. This is a frame-only circuit breaker; the trip unit is not included.
Specifications
Key specifications
Mounting Type
Unit
Voltage
240VAC, 480VAC, 600VAC, 500VDC
Poles
3
Series
ND
Electrical ratings
Amperage
1200A
Phase
3
Interrupting Rating
65kAIC at 240VAC, 50kAIC at 480VAC, 25kAIC at 600VAC, 25kAIC at 500VDC
Fit and installation
Connection Type
Bolt-On
Terminal Connection
Lugs
Standards and features
Temperature Rating
40C
Product details
Brand
Siemens
MPN
ND63F120
UPC
783643215436
Product FAQs
4 answers
How should I use the 1200A frame rating when selecting this breaker frame?
Use 1200A as the frame amperage when selecting the frame size. Select the trip unit separately for the circuit's required overcurrent protection.
What interrupting rating should I use for an AC installation?
The interrupting ratings are 65kA at 240VAC, 50kA at 480VAC and 25kA at 600VAC. Compare the rating at the installation voltage with the available fault current, which must not exceed that interrupting rating.
What voltage and interrupting limits apply when selecting this frame for DC use?
The DC voltage rating is 500VDC, with a 25kA interrupting rating at 500VDC. Use both limits when evaluating the circuit voltage and available fault current.
How does the three-pole configuration guide circuit selection?
The frame has three poles for interrupting three circuit conductors. Use the pole count when planning the conductors that require interruption.
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