SONTUONEC 250A adjustable current MCCB 3P,4P moulded case circuit breaker (Electronic MCCB)
The STN2,STN3 type moulded case circuit breaker (Electronic MCCB)
is one of the new type breakers which our company adopts the international advanced design, manufacture technology to develop. The rated insulating voltage is 950V. Suitable for AC 50Hz (60Hz). Rated working voltage 690V or below, rated working current is 12.5A to 1600A the circuit and used in distributing electric energy. Non-frequent making and breaking in the normal conditions and protecting when circuit and installation are overload, short circuit and lacking voltage. Rated shell-rack and the breaker whose current is under 400A, take protection effect when mouse cage motor's non-frequent start, breaking off working and protecting form overload, short circuit and lacking voltage. The product conforms to IEC 60947-2 standards.
| Type | Rated current (A) | Pole number | Rated insulating voltage (V) | Rated operating voltage (V) | Arcing-over distance (mm) | Ultimated short circuit breaking capacity (KA) | Servues short circuit breaking capacity (KA) | Operation performance |
| ON | OFF |
| STN3-100D | 16, 20, 25, 32, 40, 50, 63, 80, 100 | three or foul poles | 750 | 690 and blew | 0 | 18 | 18 | 1500 | 8500 |
| STN3-100N | 25 | 25 |
| STN3-100H | 70 | 70 |
| STN3-100L | 150 | 150 |
| STN3-160D | 16, 20, 25, 32, 40, 50, 63, 80, 100, 125, 160 | 25 | 25 | 1000 | 7000 |
| STN3-160N | 36 | 36 |
| STN3-160H | 70 | 70 |
| STN3-160L | 150 | 150 |
| STN3-250D | 160, 180, 200, 225, 250 | 25 | 25 | 1000 | 7000 |
| STN3-250N | 36 | 36 |
| STN3-250H | 70 | 70 |
| STN3-250L | 150 | 150 |
| STN3-400D | 200, 225, 250, 300, 315, 400 | 35 | 35 | 1000 | 4000 |
| STN3-400N | 45 | 45 |
| STN3-400H | 70 | 70 |
| STN3-400L | 150 | 150 |
| STN3-630D | 315, 350, 400, 500, 600, 630 | 35 | 35 | 1000 | 4000 |
| STN3-630N | 45 | 45 |
| STN3-630H | 70 | 70 |
| STN3-630L | 150 | 150 |
| Items No. | MCCB: STN2,STN3 |
| Range of product | 100,160,250,400,630A; |
| Product or component type | Basic frame |
| Material | Siliver , red copper |
| Poles description | 3P, 4P |
| Neutral position | Left |
| Network type | AC |
| Network frequency | 50/60 Hz |
| [In] rated current | 630 A;1200A ( 40 °C ) |
| [Ui] rated insulation voltage | 800 V AC 50/60 Hz conforming to IEC 60947-2 |
| [Uimp] rated impulse withstand voltage | 8 kV conforming to IEC 60947-2 |
| [Ue] rated operational voltage | 690 V AC 50/60 Hz conforming to IEC 60947-2 |
| Breaking capacity code | H |
| Suitability for isolation | Yes conforming to IEC 60947-2
Yes conforming to EN 60947-2 |
| Utilisation category | Category A |
| Pollution degree | 3 conforming to IEC 60947-1 |
| Control type | Toggle |
| Mounting mode | Fixed |
| Mounting support | Backplate |
| Upside connection | Front |
| Downside connection | Front |
| Protection type | Without protection |
| Mechanical durability | 15000 cycles conforming to IEC 60947-2 |
| Connection pitch | 45 mm |
| Height | 255 mm |
| Width | 185 mm |
| Depth | 110 mm |
FAQ:
Q 1.How about your experience?
A.Our Team have more than 21 years experience ; The chief products include: MCB,MCCB,ELCB,RCCB,RCD,RCBO, ACB; Isolator switch ,Leakage current plug and sockets, Voltage Regulator, ATS etc.
Q 2. How's the delivery time ?
A. It usually will spend about 15-25 days to product.
Q 3.Are there any wanrranty for your item ?
A. 18months of warranty for the products. Please feel assured.
Q 4. Which market have you already sell?
A.We have already sell in Europe, South America, South East Asia, Africa, Middle East ...etc.
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