Efficient MCCB 250A Fixed Type Circuit Breaker with Kema Certification

• 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 stand as a testament to superior engineering, expertly crafted to manage current flow seamlessly in standard operations while offering robust protection against short circuits, overloads, and unacceptable power fluctuations. Designed for peak performance, these circuit breakers are perfect for electrical assemblies with a maximum operating voltage of 400V and a rated current spectrum ranging from 12.5A to 1600A.

They are meticulously engineered to comply with the rigorous standards of EN 60947-1 and EN 60947-2.

Thermal-Magnetic Circuit Breakers:

Thermal Protection Function: (Ensures safeguarding under overload conditions)
At the heart of the thermal protection is a bimetallic strip, an ingenious combination of two metals with differing expansion coefficients when heated. Upon heating, this bimetal bends towards the metal with the lesser expansion, triggering a notch that promptly disengages the breaker mechanism, thereby halting the circuit. The bending velocity of the bimetal is directly proportional to the current dimensions traversing the breaker, as an increase in current inherently escalates heat production. This mechanism effectively ensures that the breaker's overcurrent protection function is activated when load currents surpass the rated threshold. Magnetic Protection Function: (Engineered for protection against short circuit events) An additional critical function of the breaker is to safeguard the connected circuit from the potentially catastrophic effects of short circuits, which may arise when phases come into contact with each other or when a phase encounters the ground. Such incidents cause an immense surge of current through the cables, necessitating a swift interruption of system energy to prevent thermal damage. The breaker is engineered to execute an immediate disconnect to shield the connected load. This vital function is realized through a mechanical opening mechanism, expertly designed to spring into action with the magnetization initiated by the magnetic field generated by the short circuit current.

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