Miniature Circuit Breaker 1p to 4p High Breaking Capacity with Busbar Connection

• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Electric Type
• Speed: Normal Type Circuit Breaker
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: STM3-63
• Arc-extinguishing Medium: Air
• Installation: Fixed
• Structure: MCB
• Poles Number: 4
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection
• Certification: CE
• Standard: IEC 60898.1
• Ue: 230/400V
• in: 1,2,4,6,10,16,20,25,32,40,50,63A
• Pole: 1p2p3p4p
• Transport Package: Exporting Carton
• Specification: 240pcs/ctns
• Trademark: SONTUOEC, WZSTEC, STOUEC, SONTUNE
• Origin: Wenzhou Zhejiang
• HS Code: 8536200000
• Production Capacity: 2000pieces/Week
• Package Size: 46.00cm * 24.00cm * 33.00cm
• Package Gross Weight: 0.010kg

Product Description

GENERAL:
   We have more than 20years experience in the field of Circuit Breaker(MCB, RCCB, RCBO,MCCB,ACB),we are very haply  to provide SKD Circuit Breaker spare parts if the clients need.And provide relative equimpments help and techonglogy supports and training.

  STM3-63 series high breaking capacity mini circuit breaker is used in AC50/60Hz, rated voltage of 230V 3, 4 poles 400V, rated current to 63A for overload and short-circuit protection as well as for unfrequented switching under normal case.It is used extensively for industry, commercial and household.This product conform to IEC60898 standard.

1. Application:For protecting cables and equipments against overload and short circuit.
2. General rules for choosing MCB.
a. 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.
b. There are 3 curvve 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 (10-14In) protection and control of the circuits against overloads and short-circuits; protection for circuits which supply loads with high inrush current at the circuit closing (LV/LV transformers,breakdown lamps.)

Specification:

Model	ST4-63 MCB
Pole	1P,2P,3P,4P
Rated Current(In)	1,2,4,6,10,16,20,25,32,40,50,63A
Rated Voltage(Un)	AC230(240)/400(415)V
Rated Frequency	50/60HZ
Tripping curve	B,C,D
Magnetic releases	B curve: between 3and 5 In
	C curve: between 5and 10In
	D curve: between 10 and 14In
Electro-mechanical endurance	over 6000 cycles

 

	Standard		IEC/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	AC   240/415
	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	4000
	Dielectric test voltage at ind.Freq.for 1 min	Kv	2
	Pollution degree		2
	Thermo-magnetic release characteristic		B,C,D
Mechanical features	Electrical life	t	4000
	Mechanical life	t	10000
	Protection degree		IP20
	Reference temperature for setting of thermal element	ºC	30
	Ambient temperature (with daily average ≤35ºC)	ºC	-5~+40(Special application please refer to temperature compensation correction)
	Storage temperature	ºC	-25~+70
Installation	Terminal connection type		Cable/Pin-type busbar
	Terminal size top/bottom for cable	mm^2	25
		AWG	18-3
	Therminal size top/bottom for busbar	mm^2	25
		AWG	18-3
	Tightening torque	N^*m	2
		In-lbs	18
	Mounting		on DIN rail EN 60715(35mm)by means of fast clip device
	Connection		From top and bottom

Our Services:

1. Competitive price
2. Continuance Service and support
3. Good-after service
4. Quality Reliability and Long Product Life.

 

FAQ

     Q1. How does your factory do regarding quality control?

        A. All the products will be 100% checked before the shipment.
    Q2. Are you a factory or trading company?
        A. We are a factory, and we can guarantee our price is first-hand, very cheap and competitive.
    Q3. If I want to release order, what's the payment method you accept?
        A. We accept TT, 30% deposit and 70% balance agaisnt copy of BL.
    Q4. How's the delivery time ? 
        A. Usually it will take about 25 days for production.
    Q5. What is the standard of package?   
        A. Export standard package or special package according to customer requirement.
    Q6. Could I put my logo on it? 
        A. If you have good quantity, it absolutely no problem to do OEM.
    Q7. Do you provide samples? Is it free or extra?Do you provide samples ? is it free or extra ?
        A. Yes, we could offer the samples for free charge, but the express charge need to be paid by the buyers.
    Q8. What is your terms of payment?
        A. We accept TT, 30% deposit and 70% balance agaisnt copy of BL.
    Q9. How to select the products?
        A. You can refer to our product catalogs and make detailed selection according to the selection table / order form (included in
            the catalogs), or you can directly contact us.