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MCB 63A 3 Pole
The YCB7-63N 3-Pole MCB 63A is a high-performance miniature circuit breaker designed to safeguard 3-phase electrical systems against overloads, short circuits, and isolation faults. Built to IEC/EN 60898-1 standards, this 63A MCB offers robust protection for industrial machinery, commercial facilities, and residential buildings. With a 6000A breaking capacity and 20,000 mechanical operations, it combines durability with precision, ensuring your electrical systems stay safe and efficient.
| Parameter | Details |
|---|---|
| Rated Current | 1A–63A (Adjustable) |
| Poles | 3-Pole (3-phase) |
| Rated Voltage | 230V/400V AC |
| Breaking Capacity | 6000A |
| Trip Curves | B, C, D |
| Mechanical Life | 20,000 Cycles |
| Standards Compliance | IEC/EN 60898-1 |
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Product Details
3-Pole 63A Protection
Wide Compatibility: Ideal for 3-phase systems (230V/400V) in factories, workshops, and high-rise buildings.
Adjustable Trip Curves: Choose B, C, or D curves for tailored protection of motors, transformers, or lighting circuits.
Ultra-Durable Design
Extended Lifespan: 20,000 mechanical cycles and 10,000 electrical operations for long-term reliability.
Temperature Resilience: Stable performance in environments from -5°C to +40°C (see temperature derating table).
Easy Installation & Use
DIN Rail Mounting: Quick clip-on installation compatible with standard 35mm DIN rails (EN 60715).
Clear Status Indicators: Ergonomically designed handle for smooth operation and visual feedback.
Selection
| YCB7 | - | 63 | N | 1P | C | 16 |
| Model | Shell grade current | Breaking capacity | Number of poles | Tripping characteristics |
Rated curren | |
| Miniatur circuit breaker e |
63 | N:6kA | 1P 2P 3P 4P |
B C D |
1 2 4 6 10 16 20 25 32 40 50 63 80 |
Note:This product can be assembled with accessories(YCB7-63N OF/SD/OF+SD/ MX/ MVMN/MX+OF, etc)
Technical data
| Type | Standard | IEC/EN 60898-1 | ||
| Comprehensive data | Function | Overload, Short circuit, Isolation | ||
| Number of poles | 1P,2P,3P,4P | |||
| Rated current In | A | 1-63A | ||
| Rated frequency | Hz | 50/60Hz | ||
| Electrical features | Rated voltage Ue | V | 230/400 | |
| Rated insulation voltage Ui | V | 500 | ||
| Rated breaking capacity Icn | A | 6000 | ||
| Rated impulse withstand voltage Uimp(1.2/50） | kA | 4 | ||
| Pollution degree | 2 | |||
| Use category | II、III | |||
| Trip type | Thermal magnetic release | |||
| Thermal magnetic tripping characteristics | B,C,D | |||
| Electrical and mechanical accessories | 口 | |||
| Mechanical features | Mechanical life | Times | 20000 | |
| Electrical life | Times | 10000 | ||
| Protection degree | IP20 | |||
| Antihumidity and heat resistance | The relative humidity of the air is not more than 50% when the ambient air temperature is +40°C, and it can have a higher relative humidity at a lower temperature | |||
| Reference ambient temperature | °C | 30 | ||
| Ambient temperature | °C | -5°C-+40°C, the average value of 24h does not exceed +35°C | ||
| Height | m | Not exceeding 2000 | ||
| Installation | Terminal connection type | Cable/Pin-type busbar | ||
| Maximum wire capacity |
Terminal size | mm² | 25 | |
| top/bottom for cable | AWG |
18-3
|
||
| Terminal size | mm² | 25 | ||
| top/bottom for busbar | AWG |
18-3
|
||
| Torque | N*m | 2 | ||
| In-lbs | 18 | |||
| Tool | 18 | Phillips screwdriver or flat-blade screwdriver | ||
| Installation | On DIN rail EN 60715 (35mm) by means of fast clip device | |||
| Wiring method | From top or bottom | |||
Applications
Industrial Equipment: Protect motors, compressors, and CNC machines.
Commercial Buildings: Safeguard HVAC systems, elevators, and lighting panels.
Residential Use: Ideal for high-power appliances in apartments or villas.
Why Choose YCB7-63N MCB 63A?
Cost-Effective Safety: Competitive 3 pole MCB 63A price for premium-grade protection.
Future-Proof Flexibility: Adjustable trip curves and wide current range (1A–63A).
Global Trust: Meets IEC/EN standards, ensuring compliance and reliability worldwide.
Overall and mounting dimensions(mm)
Selection
| Type | Test current | Tripping time | Expected result | Type | Test current | Tripping time | Expected result | |
| B,C,D | 1.13In | t≤1h(In≤63A) | Not tripping | B | 3In | t≤0.1s | Not tripping | |
| 1.13In | t≤2h(In>63A) | C | 5In | t≤0.1s | ||||
| B,C,D | 1.45In | t<1h(In≤63A) | Tripping | D | 10In | t≤0.1s | ||
| 1.45In | t<2h(In>63A) | B | 5In | t＜0.1s | Tripping | |||
| B,C,D | 2.55In | 1s<t<60s(In≤32A) | Tripping | C | 10In | t＜0.1s | ||
| 2.55In | 1s<t<120s(In>32A) | D | 20In | t＜0.1s |
Curve
FAQs
Q: What’s the difference between B, C, and D curves?
A:
B Curve: For resistive loads (lighting, sockets).
C Curve: For moderate inrush currents (motors, transformers).
D Curve: For high inrush currents (industrial machinery).
Q: Can this MCB handle voltage fluctuations?
A: Yes! Its 6000A breaking capacity ensures stability even during severe short circuits.
Q: Is it suitable for residential 3-phase systems?
A: Absolutely. The 3-pole MCB 63A is perfect for homes with high-power AC units or EV chargers.
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