MCCB 3p 250A Rated Insulation Voltage 1000V Moulded Case Circuit Breaker

• 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 engineered to conduct current seamlessly in normal conditions and to swiftly interrupt it during short circuits, overloads, and other unacceptable scenarios. These circuit breakers also facilitate the operational actuation and tripping of electrical circuit components. They are specifically designed for integration into electrical units with an operative voltage capped at 400V, accommodating rated currents ranging from 12.5A to 1600A.

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

Thermal-Magnetic Circuit Breakers:

Thermal Protection Function: (For safeguarding against overload conditions)
The thermal protection is facilitated by a bimetal component, which consists of two metals with different thermal expansion coefficients. When heated, the bimetal bends towards the metal with the lesser expansion, triggering a notch that aids in opening the breaker mechanism, thereby disabling the breaker. This bending action is directly proportional to the current passing through the breaker, as increased current generates more heat. Thus, the bimetal ensures overcurrent protection by responding to load currents that exceed the rated threshold.
Magnetic Protection Function:(For safeguarding against short circuit conditions) Another crucial role of the breaker is toprotect the connected circuit from shortcircuits. Short circuits can occur due tointer-phase contact or phase-ground contact.Given the extremely high current that flows through the cables during a short circuit, the system energymust be interrupted almost instantaneously,surpassing the response time of thermal protection.The breaker must execute an immediate opening to safeguard the loadit is connected to. This essential functionis carried out by a mechanical openingmechanism thatis activated bythe magnetization induced by the magnetic field created 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