Fixed Type MCCB Distribution Breaker with Unflaming Material Base

• 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 expertly crafted to conduct current under normal conditions while seamlessly switching off in cases of short circuits, overloads, inadmissible bucking, and operational triggers. These breakers are meticulously engineered for integration within electric units, maintaining a maximum operative voltage of 400V, and catering to a broad spectrum of rated currents ranging from 12.5 to 1600A.

Our products fully comply with the stringent requirements of EN 60947-1 and EN 60947-2 standards.

Thermal-Magnetic Circuit Breakers:

Thermal Protection Function: (Ideal for safeguarding against overload conditions)
Bimetal Composition: The thermal protection mechanism features a bimetallic strip, an ingenious blend of two metals with distinct heat expansion coefficients. Upon heating, the bimetallic strip bends towards the metal with a lower expansion rate, activating a notch that facilitates the breaker mechanism's release, thus disabling the breaker. The bending velocity of the bimetallic strip is directly proportional to the magnitude of the passing current-higher currents induce greater heat, thereby fulfilling the overcurrent protection role for currents exceeding the rated capacity.
Magnetic Protection Function(Ultimate safeguard in short-circuit scenarios) Another critical function of the breaker is toshield the connected circuit from shortcircuit incidents. Short circuits canarise from phase-to-phase contacts orphase-to-ground contacts. During ashort circuit, an extraordinarily high current traverses the cables, necessitatingan immediate power cut-off to avert thermal damage. The breaker must perform aninstantaneous disconnection to safeguard theconnected load. This critical function is executed bya mechanical release mechanism,which is triggered bythe magnetic force generatedduring the short circuit,ensuring rapid and effective 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