Distribution MCCB 250A Breaker with Kema Asta Certification and BMC Base

• Customization: Available
• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Manual Type
• Model NO.: DAM1-250
• 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 engineered for the seamless conduction of current under normal conditions and efficient interruption during short circuits, overloads, and unacceptable bucking. They also facilitate operational actuation and circuit part tripping. Specifically designed for electric units, these breakers operate at a maximum voltage of 400V, accommodating a rated current range from 12.5A to an impressive 1600A.

These circuit breakers fully comply with the rigorous standards of EN 60947-1 and EN 60947-2.

Thermal-Magnetic Circuit Breakers:

Thermal Protection Function: (For safeguarding against overload conditions)
Comprising a bimetal, which delivers thermal protection, this component is a fusion of two distinct metals with varying thermal expansion coefficients. Upon heating, the bimetal bends towards the metal with the lesser expansion, releasing a notch that triggers the breaker mechanism, thus disabling the breaker. The bimetal's bending speed is directly proportional to the current passing through the breaker, as higher currents generate more heat. Consequently, the bimetal ensures overcurrent protection at load currents surpassing the rated threshold.
Magnetic Protection Function:(For safeguarding against short circuit conditions) Another critical function of the breaker is toprotect the connected circuit against shortcircuits. A short circuit may occur due to thecontact between phases or betweena phase and the ground. In such events,an extremely high current will flow through the cables, necessitatingthe immediate interruption of system energy,which thermal protection may not achieve quickly enough. Hence, the breaker mustperform an instantaneous tripping to safeguard theconnected loads. This is achieved through amechanical opening mechanism triggeredby the magnetic field generated by theshort circuit current's magnetization effect.

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