
Illustration - our own representative render, not a photograph; see the datasheet for exact details.
Terasaki S250-GJ 250A 3-Pole MCCB, TemBreak 2 250A Frame, 65kA (312236)
- Brand:
- Terasaki
- Part number:
- 312236
Three-pole, 250 A TemBreak 2 S250-GJ moulded-case circuit breaker with adjustable thermal-magnetic protection and 65 kA Icu (36 kA Ics) at 400/415 V AC. Terasaki part number 312236.
- 250 A, 3-pole, TemBreak 2 250 A frame
- Icu 65 kA, Ics 36 kA at 400/415 V AC
- Adjustable thermal and magnetic trips
- Front connection, M8 terminals
- Outgoing device for 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 | 250 A |
|---|---|
| Poles / neutral | 3 pole |
| Frame size | 250 A |
Protection
| Trip unit | Thermal-magnetic |
|---|---|
| Breaking capacity (Icu) | 65 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 | 312236 |
| Range | Terasaki TemBreak2 |
More technical data
| Series | TemBreak 2 S250-GJ, 250 A frame, 3 poles |
|---|---|
| Rated current In | 250 A at 50 °C |
| Trip unit | adjustable thermal-magnetic |
| Icu / Ics at 400/415 V AC | 65 kA / 36 kA |
| Icu at 440 V AC | 50 kA; at 250 V DC: 40 kA |
| Ue | 690 V AC (50/60 Hz) and 250 V DC; Ui: 800 V; Uimp: 8 kV |
| Utilisation category | A |
| Connection | front, M8 terminal screws (lug or bar up to 25 mm wide, 7 mm thick) |
| Dimensions (W x H x D) | 105 x 165 x 68 mm; weight 1.5 kg |
| Endurance at 415 V AC | 10,000 electrical and 30,000 mechanical cycles |
Product details
Terasaki S250-GJ 312236 is a 250 A, 3-pole TemBreak 2 moulded-case circuit breaker, the top rating of the 250 A frame, rated 65 kA Icu and 36 kA Ics at 400/415 V AC, with adjustable thermal and magnetic trips. It is one of Terasaki's outgoing devices for Resilience Plus 6, 12 and 18 way boards.
Key features
- Higher-breaking version of the S250-NJ: 65 kA Icu at 400/415 V AC against 36 kA
- Ics 36 kA at 400/415 V AC, the same as the NJ
- Thermal and magnetic trips, both adjustable
- Suits AC systems to 690 V and DC to 250 V
Typical applications
Main feeders of up to 250 A to sub-boards, motor control centres or large plant where the fault level is above the 36 kA of the S250-NJ 250 A (312038). For electronic protection at the same fault level, the S250-GE 250 A (332203) is the alternative. Our Panel Builder builds the board around it, with a parts list.
Compliance
Electrical characteristics to IEC 60947-2 and EN 60947-2 (Terasaki datasheet).
Accessories that fit: auxiliary switch 000348, alarm switch 000744, a shunt trip or an under-voltage release (one trip-coil pocket, so not both), terminal cover 080517, cable clamps 081354 and 080586, and toggle lock 037016.
Genuine Terasaki product. Add it to your cart, or ask us about project quantities.

