Durable MCCB Circuit Breaker 250A with Unflaming BMC Material

• 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 exceptional DAM1 series circuit breakers are meticulously engineered to conduct current seamlessly under normal operations and to efficiently interrupt the flow during short circuits, overloads, and unacceptable voltage variations. These circuit breakers are expertly crafted for use in electrical systems with an operational voltage cap of 400V, accommodating a broad range of rated currents from 12.5 to 1600A, ensuring protection and reliability across a variety of applications.

These circuit breakers are designed in strict adherence to the rigorous standards of EN 60947-1 and EN 60947-2, ensuring superior performance and safety.

Thermal-Magnetic Circuit Breakers:

Thermal Protection Function: (Essential for protection under overload conditions)
The innovative bimetal thermal protection system features a sophisticated combination of two metals, each with distinct thermal expansion coefficients. Upon heating, the bimetallic strip elegantly bends toward the metal with the lesser expansion rate, triggering a delicate notch that initiates the precise opening of the breaker mechanism. The rate at which this bending progresses is intricately linked to the magnitude of the current traversing the breaker, as increased current corresponds to heightened thermal activity. This ingenious design ensures the overcurrent protection functionality of the breaker is effectively achieved when load currents exceed the predetermined rated threshold. Magnetic Protection Function: (For protection under short circuit conditions) Another vital function of the breaker is to safeguard the connected circuit against short circuits. These may occur when phases come into contact with each other or when a phase contacts the ground. In such instances, an extraordinarily high current flows through the cables, necessitating an immediate interruption by the breaker to protect the connected load. The breaker executes this critical task through a robust mechanical opening mechanism that operates with swift efficiency, utilizing the magnetic force generated by the magnetic field induced 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