MCB 63A 3 Pole

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.