Schneider Electric 33363 ComPact NS1600N 3P Micrologic 5.0A

33363: ComPact NS1600N 3P breaker with MicroLogic 5.0 A

The 33363 is a ComPact NS1600N fixed-mounted circuit breaker, three poles with three protected poles (3D), rated 1600 A, with a MicroLogic 5.0 A electronic trip unit and the datasheet performance level “N 50 kA 415 V AC”. Seven Star LLC supplies the 33363 in Oman and the GCC as an independent supplier based in Muscat.

Reading the name: NS marks the ComPact NS630b to 1600 range, 1600 is the rating in amperes at 50 °C, and the letter N is the performance level. The N performance level is rated 50 kA at 415 V AC according to the datasheet, with 30 kA Icu at 660/690 V.

Status note: the datasheet for the 33363 marks it as discontinued on 30 Sep 2024. It is therefore mainly relevant to maintenance, spares and like-for-like replacement of an existing installation. If you are designing a new board, ask us which current reference applies to the same duty and we will check the manufacturer documents before quoting, instead of assuming that a sibling is a drop-in.

Trip unit and settings of the 33363

This version carries the MicroLogic 5.0 A trip unit with long-time, short-time and instantaneous protection, which the datasheet abbreviates as LSI. It adds adjustable short-time pick-up of 1.5 to 10 x Ir with a delay of 0.1 to 0.4 s, and the datasheet states that zone selective interlocking is available. An LCD display with ammeter function and indicator LEDs complete the front of the unit.

With In = 1600 A the long-time pick-up can be set from about 640 A (0.4 x In) to 1600 A. The instantaneous pick-up spans 2 to 15 x In, which corresponds to roughly 3200 A up to 24000 A, and it can also be switched off, as the datasheet lists Off as an option.

The long-time delay tr is listed as 12.5 to 600 s at 1.5 x Ir; 0.5 to 24 s at 6 x Ir; 0.7 to 16.6 s at 7.2 x Ir and the thermal memory is 20 mn. These figures matter for coordination with upstream and downstream devices, so request a coordination study if the 33363 will sit between a transformer and several outgoing feeders.

33363 technical specifications

Breaking capacity and ratings of the 33363

The full Icu and Ics lists are in the table above; the figure to carry into a fault study is 50 kA Icu at 380/415 V AC, with 30 kA at 660/690 V AC.

Short-time withstand current Icw is 19.2 kA 1 s conforming to IEC 60947-2, the insulation voltage is 800 V AC 50/60 Hz conforming to IEC 60947-2 and the impulse withstand is 8 kV conforming to IEC 60947-2.

Discontinued status and replacement planning for the 33363

Discontinued does not stop installed 33363 units from working, and the datasheet figures stay valid for them; what changes is availability. For a like-for-like swap, match the rated current of 1600 A, the poles (3P), the breaking capacity (50 kA at 380/415 V), the trip unit type and the size of 210 mm x 327 mm x 147 mm with its 70 mm connection pitch. Send us a nameplate photograph and we will compare it against the datasheet.

Size, weight and mounting of the 33363

The 33363 is a fixed breaker for mounting on a backplate, with front connections at the top and bottom on a 70 mm pitch. The body measures 210 mm wide, 327 mm high and 147 mm deep and weighs 14 kg. Power losses are listed as 74 W, a figure to include in the heat balance of the enclosure.

Being a three-pole device, it is 210 mm wide, narrower than the 280 mm of the four-pole frames in this group, and it weighs 14 kg. There is no neutral pole, so a neutral conductor, if present, runs separately.

Information to send with an RFQ for the 33363

Because the item is discontinued, please include:

• Part number 33363 and quantity.
• Nameplate photograph of the existing breaker, if replacing one.
• System voltage, frequency and prospective fault current.
• Trip unit settings in use and any accessories fitted.
• Delivery location and the date by which you need the breaker.

Site conditions for the 33363 in Oman and the GCC

The datasheet lists an operating ambient of -25 to 70 °C, relative humidity of 0 to 95 %, IP40 with IK07 and pollution degree 3 conforming to IEC 60947. The operating altitude is 0 to 2000 m without derating; 2000 m to 5000 m with derating.

In Oman these breakers sit in main low-voltage switchboards at substations, desalination and water plants, industrial power houses and large buildings. Summer heat inside the switchboard, dust and coastal humidity are the usual risks, so compare the room temperature with the figures above.

ComPact NS comparison table around the 33363

The twelve references in this group of datasheets cover the 800, 1000, 1250 and 1600 A ratings in N and H performance levels, in three and four poles. Every row below carries a discontinued flag on its datasheet.

Documents and quotation

The manufacturer datasheet for this reference is attached on this page, so you can compare the figures quoted here with the original before you commit to a design or a purchase order.

To proceed, send the part number, the quantity and a few lines about the installation and we will reply with availability and a quotation. Seven Star LLC works as an independent supplier in Muscat with no affiliation to the manufacturer.