Durable Moulded Case Circuit Breaker 250A with Asta Compliance Standards

• 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 meticulously crafted to seamlessly conduct current in standard operational modes, while adeptly interrupting current flow during short circuits, overloads, and unacceptable buckling. They are engineered to protect and actuate electric circuit segments within systems where the operational voltage is confined to 400V, catering to a rated current spectrum from 12.5 to an impressive 1600A.

These groundbreaking circuit breakers adhere to the high standards set by EN 60947-1 and EN 60947-2, ensuring unparalleled performance and reliability.

Thermal-Magnetic Circuit Breakers:

Thermal Protection Function: (For safeguarding under overload scenarios)
The sophisticated bimetal element, integral to thermal protection, ingeniously combines two distinct metals with varying thermal expansion coefficients. Upon heating, this bimetal gracefully bends towards the metal exhibiting lesser expansion. This action triggers a notch that facilitates the breaker mechanism's opening, effectively deactivating the breaker. The bending velocity of the bimetal directly correlates with the magnitude of the current traversing the breaker, as heightened current results in increased heat. Consequently, the overcurrent protection feature is adeptly executed by the bimetal at load currents surpassing the rated threshold. Magnetic Protection Function (Safeguarding under short circuit incidents) Another vital role of the breaker is to shield the connected circuit from short circuits. Short circuits may arise from phase-to-phase contact or phase-to-ground contact. In scenarios where an exceedingly high current courses through the cables due to a short circuit, the system's energy must be rapidly disrupted due to thermal protection. The breaker is engineered to execute an instantaneous opening to preserve the connected load. This critical function is managed by a mechanical opening mechanism, which is actuated through the magnetization induced by the magnetic field created by the short circuit current. magnetization caused by the magnetic area formed 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