Schneider Electric C63N3 ComPacT NSX630N 3P Basic Frame 630A

C63N3: ComPacT NSX630N 3P basic frame without trip unit

The C63N3 is the basic frame of a ComPacT NSX630N, three-pole, 630 A at 40 °C, listed on its datasheet as a product type of basic frame with the protection entry without protection. Seven Star LLC supplies the C63N3 in Oman and the GCC as an independent supplier based in Muscat.

The frame carries the poles, the switching mechanism and the connections, and it is completed with a trip unit chosen to suit the feeder. It carries the breaking code N 50 kA 415 V AC, so the fault rating is already fixed by the frame.

C63N3 technical specifications

Selection and RFQ checklist for the C63N3

• Frame: NSX630N with 3P, 630 A.
• Fault level: 50 kA Icu at 380/415 V AC against the prospective current at the board.
• Trip unit: type, rating and protection functions, ordered as a separate reference.
• Neutral handling and space available: 140 mm wide.
• Accessories: auxiliary contacts, handles, terminal covers.

For the quotation please send the part number C63N3, the trip unit you plan to use, quantity, system voltage and frequency, and delivery date.

Related references to the C63N3

The C63N3 sits in a group of ComPacT NSX400 and NSX630 references. The table shows the frames, complete breakers and trip units of the same size covered by these datasheets. Complete breakers on the same frame in this group of datasheets include C63N32D630, C63N42D630.

Commissioning and maintenance notes for this frame

Before energising a frame that has just been completed with its trip unit, check that the terminals are tightened to the torque in the manufacturer instructions, that the toggle operates freely, and that the trip unit settings match the coordination study rather than the factory position.

In service, include the breaker in the periodic thermography and inspection round of the board. Look for discoloured terminals, dust build-up on the front and signs of condensation, all of which are common in coastal and desert sites. Keep a record of the trip unit settings so a replaced device can be restored to the same values.

If a breaker has interrupted a heavy fault, follow the manufacturer guidance on inspection before putting it back in service, and keep a spare frame or complete breaker available for critical boards where a long delivery would stop production.

Size and mounting of the C63N3

The frame measures 140 mm wide, 255 mm high and 110 mm deep. It mounts on a backplate with front connections at top and bottom on a 45 mm pitch, with a toggle control.

It is the three-pole frame; if you need a switched neutral, the four-pole frame of the same rating is the alternative.

Breaking capacity and ratings of the C63N3

The code N 50 kA 415 V AC corresponds to 50 kA Icu at 380/415 V AC. At 660/690 V AC the Icu is 10 kA, at 440 V AC it is 42 kA and at 500 V AC it is 30 kA. The service capacity Ics at 380/415 V AC is 50 kA.

The rated insulation voltage is 800 V AC 50/60 Hz conforming to IEC 60947-2, the impulse withstand 8 kV conforming to IEC 60947-2, and the datasheet lists suitability for isolation. Electrical durability is given at 440 V and 690 V in cycles in the table above, and mechanical durability is 15000 cycles conforming to IEC 60947-2.

Using this frame in Oman and GCC installations

Frames of this size are used for incomers and large feeders in low-voltage boards at substations, desalination plants, oil and gas facilities, industrial halls and large buildings. The datasheet gives an operating range of -25 to 70 °C, humidity of and altitude of .

Board temperature in summer and dust ingress are the two points we ask customers to check. Protection degrees are IP40 conforming to IEC 60529 and IK07 conforming to IEC 62262.

What this frame does and does not include

Because the C63N3 is sold without a trip unit, it does not protect against overload or short circuit on its own: the datasheet states Without protection. The protection stage, the settings and the current range come from the trip unit that is added.

The datasheet for the trip unit C6336E630 (MicroLogic 6.3 E, 630 A, listed for ComPacT NSX630) shows one candidate. Check the manufacturer compatibility information for the rating and function you need, and do not assume that any trip unit of a given brand fits any frame.

Documents and quotation

A datasheet for the C63N3 is attached on this page so you can check the figures quoted here against the original document before committing to a purchase order.

To proceed, send the part number, the quantity and the project background and we will confirm availability and prepare a quotation. Seven Star LLC works as an independent supplier based in Muscat and is separate from the brand’s own sales network.