Introduction:
- The 2-pole 63A Miniature Circuit Breaker (MCB) serves as a core component in low-voltage power distribution systems; in the event of an overload or short circuit, it automatically cuts off the power supply instantly, thereby preventing equipment damage and mitigating fire risks.
- Our MCB enclosures are constructed from Grade A flame-retardant materials, offering high-temperature resistance and fire-retardant properties to eliminate the risk of fires caused by high temperatures.
- Our compact circuit breakers feature three tripping curves—Types B, C, and D—to precisely match diverse electrical requirements: Type B is suitable for residential use, Type C is ideal for commercial applications and small motors, and Type D is specifically designed for industrial power systems.
- The MCB 2 Pole 63a manufactured by CNTN Electric is suitable for a wide range of applications, including residential lighting circuits, main incoming power supplies, public buildings, industrial power distribution rooms, new energy systems, public service facilities, and commercial office buildings.
- CNTN Electric’s 20 amps miniature circuit breaker is very compact in size, making it easy to install. Its overall dimensions are only 7.7*6.5*1.7 cm.
- The 2P 63A Miniature Circuit Breaker from CNTN Electric features superior quality and reliable performance, with selectable rated currents ranging from 6A to 63A and a rated voltage of 5–220 VAC.
- If you would like to get the latest price for this MCB , please fill out the form at the bottom to get our quote!
Ordering Instruction:

| type | Standart | EC/EN 60898-1 | |
| Electrical features | Rated current In | A | 1,2,4,6,10,16,20,25,32,40,50,63 |
| Poles | P | 1,2,3,4 | |
| Rated voltage Ue | V | 230/400 | |
| Insulation voltage Ui | V | 500 | |
| Rated frequency | Hz | 50/60 | |
| Rated breaking capacity | A | 45,006,000 | |
| Rated impulse withstand voltage(1.2/50)Uimp | V | 4500(80)/6000(1-63) | |
| Dielectric test voltage at ind.Freq.for 1min | Kv | 2 | |
| Pollution degree | 2 | ||
| Thermo-magnetic release characteristic | BCD | ||
| Mechanical features | Electrical life | 8000 | |
| Mechanical life | 20000 | ||
| Protection degree | IP20 | ||
| Reference temperature for setting of thermai element | ℃ | 30 | |
| Ambient temperature | ℃ | -5~+40 | |
| (with daily average≤35℃) | |||
| Storage temperature | ℃ | -25~+70 | |
| Installatior | Terminal connection type | Cable/Pin-type busbar | |
| Terminal size top /bottom for cable | mm² | 25 | |
| AWG | 18-3 | ||
| Terminal size top /bottom for busbar | mm | 25 | |
| AWG | 18-3 | ||
| Tightening torque | N*m | 2 | |
| In-Ibs | 18 | ||
| Mounting | On DIN rail EN 60715(35mm)by means of fast clip | ||
| Connection | From top or bottor |
Outline and Installation Dimensions (mm)








