Illustration - our own representative render, not a photograph; see the datasheet for exact details.
Terasaki S1250-SE 800A 3-Pole Electronic MCCB, TemBreak 2 1250A Frame, 50kA (553240)
- Brand:
- Terasaki
- Part number:
- 553240
TemBreak 2 S1250-SE MCCB with a microprocessor trip unit, 800 A, 3-pole, on the 1250 A frame, rated 50 kA Icu at 400/415 V AC and utilisation category B with a 15 kA short-time withstand. Terasaki part number 553240.
- 800 A, 3-pole electronic MCCB, TemBreak 2 1250 A frame
- Icu 50 kA / Ics 38 kA at 400/415 V AC
- Category B, Icw 15 kA for 0.3 s
- Adjustable microprocessor trip unit
- Incomer for 800 A Resilience Plus 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.
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Specifications
Electrical
| Rated current | 800 A |
|---|---|
| Poles / neutral | 3 pole |
| Frame size | 1250 A |
Protection
| Trip unit | Electronic |
|---|---|
| Breaking capacity (Icu) | 50 kA |
Fit
| Panelboard range | Resilience PlusWhat does this mean?Modular: a separate incomer housing beside the panel board, with add-on enclosures and cableways. 400 A or 800 A busbars, 6 to 18 outgoing ways, outgoing MCCBs up to 250 A (400 A on the twin board), Form 3a or 3b Type 2, doors optional. |
|---|
Identification
| Brand | Terasaki |
|---|---|
| Part number | 553240 |
| Range | Terasaki TemBreak2 |
More technical data
| Series | TemBreak 2 S1250-SE, 1250 A frame, 3-pole |
|---|---|
| Rated current | 800 A; electronic (microprocessor) trip; utilisation category B |
| Icu/Ics at 400/415 V AC | 50/38 kA; at 690 V AC: 20/15 kA (not for IT systems at 690 V) |
| Icw | 15 kA for 0.3 s |
| Ue | 690 V AC 50/60 Hz; Ui 800 V; Uimp 8 kV |
| Dimensions (W x H x D) | 210 x 370 x 120 mm |
| Endurance | 4,000 electrical (690 V AC), 5,000 mechanical operations |
Product details
The Terasaki S1250-SE 553240 is an 800 A, 3-pole electronic MCCB on the TemBreak 2 1250 A frame. At 400/415 V AC it has an ultimate breaking capacity of 50 kA and a service breaking capacity of 38 kA; as a category B breaker with Icw 15 kA for 0.3 s it can be time-graded against the outgoing MCCBs it feeds.
Key features
- Microprocessor trip unit with adjustable long-time pick-up
- Selectable characteristics covering long-time delay, short-time pick-up and short-time delay, plus instantaneous protection
- Rated short-time withstand Icw 15 kA for 0.3 s
- Front-connected; the series datasheet shows extension-bar terminals as standard, with rear connection and plug-in as options
Typical applications
Protected incomer for an 800 A Resilience Plus panel board, mounted in the board's separate incomer housing (sold separately), where the board needs adjustable electronic protection at its supply point. As a 3-pole incomer it needs the board's matching neutral link, ordered separately. In the Panel Builder it is one of the 800 A incoming devices.
Compliance
The S1250-SE datasheet gives the electrical characteristics to IEC 60947-2 and EN 60947-2, and also lists JIS C 8201-2-1, AS/NZS 3947-2 and NEMA AB-1 values.
Accessories that fit: toggle lock 035326; terminal covers 081088 and 081095; 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.
