Fixed Type MCCB 3p 250A for Reliable Protection

• 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 DAM1 series circuit breakers are expertly crafted to conduct current in standard operating conditions and to efficiently interrupt the flow during short circuits, overloads, intolerable currents, while also facilitating operational actuation and tripping of circuit components. Specifically designed for use in electrical units with an operating voltage capped at 400V, these breakers accommodate a rated current range from 12.5 to 1600A, ensuring robust performance and adaptability.

They meet the stringent requirements of EN 60947-1 and EN 60947-2 standards, ensuring top-notch safety and reliability.

Thermal-Magnetic Circuit Breakers:

Thermal protection function: (For safeguarding against overload conditions)
The bimetal component, essential for thermal protection, is ingeniously engineered from two metals with distinct thermal expansion coefficients. When heated, the bimetallic strip bends towards the metal with the lower expansion rate, triggering a notch that enables the breaker mechanism to disengage, thus deactivating the breaker. The speed at which the bimetal bends is directly proportional to the current passing through the breaker - more current results in more heat, thereby activating the overcurrent protection function effectively at load currents exceeding the rated levels. Magnetic protection function: (For protection against short circuit conditions) An additional crucial function of the breaker is to safeguard the connected circuit from short circuits. These can occur due to phase-to-phase contact or phase-to-ground contact. During such events, an exceptionally high current traverses the cables, necessitating the system's energy to be interrupted swiftly to prevent damage, as thermal protection would demand. The breaker must execute instantaneous opening to shield the load it is connected to. This crucial function is performed by a mechanical opening mechanism that operates on the principle of magnetization induced by the magnetic field generated by the short circuit current culminating in a swift and reliable response.

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