Illustration - our own representative render, not a photograph; see the datasheet for exact details.
Terasaki S400-NJ 400A 4-Pole MCCB, TemBreak 2 400A Frame, 50kA (378850)
- Brand:
- Terasaki
- Part number:
- 378850
TemBreak 2 S400-NJ thermal-magnetic MCCB, 400 A, 4-pole, rated 50 kA at 400/415 V AC for both Icu and Ics, with adjustable thermal and magnetic trips. Terasaki part number 378850.
- 400 A, 4-pole, TemBreak 2 400 A frame
- Icu and Ics 50 kA at 400/415 V AC
- Adjustable thermal and magnetic trips
- Front connection, M10 terminal screws
- Incomer for Resilience Standard boards
Available to order
UK delivery £9.95 ex VAT, free on orders of £100 ex VAT or more; usually 3-5 working days.
Minimum order £50 ex VAT. All prices exclude VAT, which is added at checkout.
Project quantities or a lead time to check? Request a quote
Specifications
Electrical
| Rated current | 400 A |
|---|---|
| Poles / neutral | 4 pole |
| Frame size | 400 A |
Protection
| Trip unit | Thermal-magnetic |
|---|---|
| Breaking capacity (Icu) | 50 kA |
Fit
| Panelboard range | Resilience StandardWhat does this mean?Incomer and outgoing ways in one wall-mounted board. 250 A or 400 A busbars, 4 to 18 outgoing ways, outgoing MCCBs up to 125 A, Form 3b Type 2, doors included. |
|---|
Identification
| Brand | Terasaki |
|---|---|
| Part number | 378850 |
| Range | Terasaki TemBreak2 |
More technical data
| Series | TemBreak 2 S400-NJ, 400 A frame, 4-pole |
|---|---|
| In | 400 A at 50 °C; thermal-magnetic, adjustable; utilisation category A |
| Icu/Ics at 400/415 V AC | 50/50 kA; at 690 V AC: 20/15 kA |
| Ue | 690 V AC 50/60 Hz, 250 V DC; Ui 800 V; Uimp 8 kV |
| Dimensions (W x H x D) | 185 x 260 x 103 mm; weight 5.6 kg |
| Endurance | 4,500 electrical (415 V AC), 15,000 mechanical operations |
Product details
The Terasaki S400-NJ 378850 is a 400 A, 4-pole thermal-magnetic MCCB on the TemBreak 2 400 A frame. It breaks 50 kA at 400/415 V AC, and its service rating Ics is also 50 kA, equal to Icu.
Key features
- Rated current In 400 A at 50 °C (the series is also built at 250 A)
- Adjustable thermal trip; magnetic trip adjustable from LO to HI
- Icu = Ics = 50 kA at 400/415 V AC
- Front connection with M10 terminal screws; extension bars, cable clamps, rear connection and plug-in versions optional
Typical applications
Protected incomer for a Resilience Standard MCCB panel board. The fourth pole switches the neutral with the phases. It also suits feeder and sub-main protection in switchboards with fault levels up to 50 kA at 415 V. Select it as the incomer in the Panel Builder to see it in a complete board.
Compliance
Electrical characteristics to IEC 60947-2 and EN 60947-2 per the series datasheet, which also gives JIS C 8201-2-1, AS/NZS 3947-2 and NEMA AB-1 values.
Accessories that fit: auxiliary switch 000348; alarm switch 000744; shunt trips 000904, 000911, 000928, 000935, 000942, 000959, 000966 and 000973, or under-voltage releases 001208, 001215, 001222, 001239, 001246 and 001253 (one trip-coil pocket: one or the other, not both); toggle lock 037306; connection bars 010323 and 010330; terminal covers 080814 and 081347; interpole barrier 043338. Interpole barriers and standard terminal covers cannot be fitted together.
Genuine Terasaki product. Add it to your cart, or ask us about project quantities.
