High Quality MCCB 3p 250A Circuit Breaker for Distribution Systems

• 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

Introducing the unparalleled performance of our DAM1 series circuit breakers, meticulously engineered to seamlessly conduct current under normal conditions while providing robust protection by swiftly interrupting power during short circuits, overloads, and inadmissible bucking. Additionally, they offer operational actuation and tripping of electric circuit parts. Ideal for electric units, our breakers are tailored for systems with operative voltage capped at 400V, supporting a rated current range from an efficient 12.5 to a powerful 1600A.

These circuit breakers meet the stringent standards set by EN 60947-1 and EN 60947-2, ensuring superior reliability and safety.

Thermal-Magnetic Circuit Breakers:

Thermal Protection Function: (Designed to shield against overload conditions)
The heart of our thermal protection lies in the precisely engineered bimetal, a sophisticated fusion of two metals with distinct heat extension coefficients. Upon heating, this bimetallic strip elegantly bends towards the metal with lesser expansion, triggering a notch that aids in releasing the breaker mechanism, effectively disabling the breaker. The bimetal's bending rate is directly proportional to the magnitude of current passing through, as increased current leads to greater heat production. This ingenious design ensures that the breaker's over-current protection function comes to life at load currents exceeding the rated capacity, safeguarding your system with unparalleled precision. Magnetic Protection Function (Engineered for safeguarding against short circuit conditions) Another crucial aspect of our breaker is its capability to vigorously protect the connected circuit against the dangers of short circuits, which may result from accidental contact between phases or an unforeseen phase-to-ground contact. During such events, exceptionally high currents surge through the cables, necessitating a swift disconnection of system energy to prevent thermal damage. Our circuit breaker promises to perform an instantaneous opening, thereby safeguarding the load it serves. The key component delivering this vital protection is a mechanical opening mechanism, expertly designed to spring into action with the magnetization generated by the magnetic field formed during a short circuit current. This ensures rapid response and enduring 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