Illustration - our own representative render, not a photograph; see the datasheet for exact details.
Terasaki S1250-SE 800A 4-Pole Electronic MCCB, TemBreak 2 1250A Frame, 50kA (553400)
- Brand:
- Terasaki
- Part number:
- 553400
TemBreak 2 S1250-SE MCCB with a microprocessor trip unit, 800 A, 4-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 553400.
- 800 A, 4-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.
Project quantities or a lead time to check? Request a quote
Specifications
Electrical
| Rated current | 800 A |
|---|---|
| Poles / neutral | 4 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 | 553400 |
| Range | Terasaki TemBreak2 |
More technical data
| Series | TemBreak 2 S1250-SE, 1250 A frame, 4-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) | 280 x 370 x 120 mm |
| Endurance | 4,000 electrical (690 V AC), 5,000 mechanical operations |
Product details
The Terasaki S1250-SE 553400 is an 800 A, 4-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. The fourth pole switches the neutral with the phases. 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.
