Durable 3p MCCB 250A Circuit Breaker for Safe Electrical Distribution

• Customization: Available
• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Manual Type
• Model NO.: DAM1-250
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Arc Chamber
• Installation: Fixed
• Structure: MCCB
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection
• Certification: ISO9001-2000, CE, CB, CCC, Asta, Semko, RoHS
• Base: BMC Unflaming Material
• Rated Insulation Voltage: 1000V
• Rated Operation Voltage: 400/415V
• Outline Dimension: 170X105X103.5mm
• Transport Package: Carton
• Specification: 63, 80, 100, 125, 160, 200, 250, 315A
• Trademark: CDADA, OEM, ODM
• Origin: Shanghai, China
• HS Code: 8536200000
• Production Capacity: 20000PCS/Month

Product Description

Introduction

The revolutionary DAM1 series circuit breakers are meticulously engineered to conduct current seamlessly under normal conditions and expertly shut it off in the event of short circuits, overload, or any unacceptable bucking. These circuit breakers are ideal for operational initiation and disconnection of electrical circuit segments. Designed for excellence, they are tailored for electrical installations where the working voltage is confined to a maximum of 400V, covering a wide range of rated currents from a modest 12.5A to a robust 1600A.

They proudly meet the stringent standards set by EN 60947-1 and EN 60947-2, ensuring unparalleled reliability and safety.

Thermal-Magnetic Circuit Breakers:

Thermal protection function: (Providing superior safeguards against overload conditions)
The ingenious bimetal within the breaker offers thermal protection through an innovative fusion of two metals with distinct expansion coefficients when heated. As the bimetal warms, it elegantly bends toward the metal with lesser expansion, thereby triggering a notch that facilitates the tripping of the breaker mechanism, ultimately disabling the circuit breaker. The bending velocity of the bimetal is directly proportional to the current magnitude coursing through the breaker, as a rise in current results in increased heat. This sophisticated mechanism ensures that the breaker effectively delivers overcurrent protection whenever the load current surpasses the rated threshold, thanks to the bimetal's precise intervention. Magnetic protection function (Expertly protecting against short circuit scenarios) The breaker is adeptly designed to safeguard the connected circuit from short circuits, which may occur due to inter-phasal contacts or phase-to-ground contact. Given the potential for excessive current to surge through the cables during a short circuit, it is imperative for the system energy to be cut off promptly to prevent thermal damage. The breaker must execute an immediate opening action to shield the load to which it is connected. This critical safety function is managed by a mechanical opening mechanism that activates through the magnetization induced by the magnetic field generated by the short circuit current, ensuring the utmost protection.

Thermal-Magnetic fixed type Circuit Breakers
Model			DAM1-250
Breaking Capacity Code			N	S	H	G
Rated Current of Frame size- Inm                                                                    (A)			250A
Rated Current-In(40,50 or 55ºC)                                                                      (A)			63 - 80-100-125 - 160(180) -  200(225) - 250(320)A
Rated İnsulation Voltage -Ui(a.c.) 50-60Hz                                                    (V)			750V
Rated operation Voltage  -Ue(a.c.) 50-60Hz                                                    (V)			400/415V
Number of Pole			3P /4P
Rated ultimate short Circuit breaking Capacity  kA  Icu AC400V/50Hz O-CO          (KA)			35	50	65	85
Rated service short Circuit breaking Capacity  kA  Ics AC400V/50Hz O-CO-CO     (KA)			26.25	37.5	48.75	51
Rated short-circuit breaking capacity Icm(peak)/cos ф AC400V/50HZ O-CO         (KA)			77/0.25	114/0.25	143/0.2	178/0.2
Rated impulse withstand Voltage -Uimp                                                                            (V)			8000
Dielectric Propery (V)			3000
lonization distance                                                                                                              (mm)			≤30/0
Endurance	Total Cycles		8000
	Electrical Life		1000
	Mechanical Life		7000
Over Current trip	Thermal and Magnetic release fix type		√
Category (EN 60947-2/IEC 60947-2)	Main circuit		A/B
	Auxiliary circuit		AC-15
Under Voltage Release			√
Shunt Release			√
Auxiliary Contact			√
Alarm Contact			√
Auxiliary Contact and Alarm Contact			√
Handle Operation Mechanism			√
Electrical Operastion Mechanism			√
DIN clips			-
Terminal cover			√
Phase seperator			√
Extention Handle			-
	W (mm)	3P	105
		4P	140
	L (mm)	3P	170
		4P	170
	H (mm)	3P	103.5
		4P	103.5
Weight	Fixed version 3P/4P		2.7/3.5		41.5/5.5
	Plug-in version 3P/4P		3.2/4.2		4.6/6
	Draw out version 3P/4P		3.6/4.6		5/6.4