MCCB 3p 250A Moulded Case 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 illustrious DAM1 series circuit breakers are meticulously crafted for seamless current conduction under normal conditions and swift disconnection during short circuits, overloads, or unwarranted bucking. Additionally, they are primed for operational engagement and disconnection of electric circuit segments. These circuit breakers are engineered for deployment in electrical assemblies with an operational voltage cap of 400V, accommodating rated currents spanning from 12.5 to 1600A.

Proudly adhering to the rigorous standards of EN 60947-1 and EN 60947-2, these breakers ensure reliability and compliance.

Thermal-Magnetic Circuit Breakers:

Thermal Protection Function: (Designed for safeguarding against overload conditions)
The ingenious bimetal, integral for thermal protection, is an amalgamation of two metals with divergent expansion coefficients under heat. Once heated, the bimetal arches towards the metal exhibiting lesser expansion, thereby releasing a latch that triggers the breaker mechanism to deactivate the circuit. The bending speed of the bimetal is proportionately related to the current magnitude traversing through the breaker, as a surge in current results in increased heat generation. Hence, the bimetal adeptly fulfills the overcurrent protection function for load currents surpassing the rated threshold. Magnetic Protection Function (For safeguarding under short circuit conditions) Another pivotal role of the breaker is to shield the connected circuit against short circuits. Such malfunctions may ensue from inter-phasal contacts or phase-to-ground contacts. In such scenarios, a substantial current surge courses through the wires during a short circuit, necessitating a swift interruption of system energy due to the exigencies of thermal protection. The breaker must execute an instantaneous disengagement to safeguard the load it is attached to. This critical role is performed by a mechanical disengagement mechanism that is activated by the magnetic force induced 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