China YUANKY MCB 1-63A 240/415V AC 1p 2p 3p 4P iec60898 B C D curve mini air circuit breaker factory and manufacturers

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YUANKY MCB 1-63A 240/415V AC 1p 2p 3p 4P iec60898 B C D curve mini air circuit breaker

Short Description:

General

S7 is of high current limiting performance to limit the destruction energy due to short circuit to the greatest extent. Application:For protecting cables and equipments against overload and short circuit.

General rules for choosing MCB.

Technical data of the network at the point considered:

The earthing systems, short-circuit current at the circuit breaker installation point. which must always be less than the breaking capacity of this device, network normal voltage.

There are 3 curve characteristics for magnetic operation:

B curve (3-5In) protection and control of the circuits against length cables in TN and IT SYSTEMS.

C curve (5-10In) protection and control of the circuits against overloads and short-circuits; protection for resistive and inductive loads with low inrush current.

D curve (10-20In) protection and control of the circuits against overloads short-circuits; protection for circuits which supply loads with high inrush current at the circuit closing (LV/LV transformers, breakdown lamps).

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Product Detail

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Specifications

Each pole of the circuit breaker power consumption

Electrical Features	Standard		IEC/EN 60898-1
	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	AC 240/415
	Insulation voltage Ui	V	500
	Rated frequency	Hz	50/60
	Rated breaking capacity	A	3000,4500(2~40A/6000)
	Rated impulse with stand voltage(1.2/50) Uimp	V	4000
	Dielectric test voltage at ind. Frqu, for 1 min	KV	2
	Pollution degree		2
	Thermo-magnetic release characteristic		B,C,D
	Electrical life	T	4000
	Mechanical life	T	10000
	Protection degree		IP20
	Reference temperature for	℃	30
	Setting of thermal element
	Ambient temperature(with daily average ≤35℃)	℃	-5~+40(Special application please refer to temperature compensation correction)
	Storage temperature	℃	-25~+70
Installation	Terminal connection type		Cable/Pin type busbar/U type busbar
	Terminal size top/bottom for cable	mm²	25
		AWG	18-3
	Terminal size top/bottom for busbar	mm²	25
		AWG	18-3
		N*m	2
		In-Ibs.	18
	Mounting
	Connection

Temperature derating

Please refer to table below for temperature compensation correction

Rated Current In(A)	Temperature compensation coefficient under various operating temperature
Rated Current In(A)	-10℃	0℃	10℃	20℃	30℃	40℃	50℃	55℃	60℃
1-6	1.20	1.14	1.09	1.05	1.00	0.96	0.80	0.75	0.70
10-32	1.18	1.12	1.08	1.04	1.00	0.96	0.92	0.88	0.84
40-60	1.16	1.12	1.07	1.03	1.00	0.97	0.87	0.83	0.80