Market Tested Cost-Performance Miniature Circuit Breaker DIN Rail Design MCB 6ka

• Customization: Available
• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Manual Type
• Model NO.: STM3-63
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Air
• Installation: Fixed
• Structure: MCB
• Poles Number: 4
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), RCCB
• Certification: ISO9001-2000, CE
• Standard: IEC 60898.1
• Ue: 230/400V
• in: 1,2,4,6,10,16,20,25,32,40,50,63A
• Installation Type: DIN Rail or Busbar Type
• Price: Factory Price
• Inside Design: C65 Design
• Transport Package: Exporting Carton
• Specification: 240pcs/ctns
• Trademark: SONTUOEC, WZSTEC, SONTUNE, IMDEC
• 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

Product Description

Sontune Series 6ka STM3-63 MCB  230V 400V for protecting cables and equipments overload and short circuit 

General
STM3-63 is of high current limiting performance to limit the destruction energy due to short circuit to the greatest extent, which is used in AC50/60Hz, rated voltage of 230V/400V, rated current 1A 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 IEC60898.1 standard.






Specification

	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 230, 400
	Insulation voltage Ui	V	500
	Rated frequency	Hz	50/60
	Rated breaking capacity	A	3500, 4500, 6000
	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

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).


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