Reliable MCCB 3p 250A Fixed Type Circuit Breaker Good Quality Air Switch

• Customization: Available
• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Manual Type
• Model NO.: DAM1-250
• Speed: Normal Type Circuit Breaker
• 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

Discover the versatile and robust DAM1 series circuit breakers, meticulously engineered for seamless current conduction in regular operations and effective protection against short circuits, overloads, and operational faults. Ideal for generating reliable protection in electric units with an operational voltage up to 400V and a rated current range from 12.5 to 1600A.

They meet the stringent requirements of EN 60947-1 and EN 60947-2 standards.

Thermal-Magnetic Circuit Breakers:

Thermal Protection Function: (Ensures safety under overload conditions)
The bimetallic strip, an essential component for thermal protection, is crafted from two metals with distinct thermal expansion rates. As heat builds up, the bimetal bends towards the metal with the lower expansion rate. This mechanism triggers the notch that opens the breaker, effectively disabling it. The bending rate of the bimetal correlates directly with the current size passing through, as increased current elevates the heat level, thereby empowering the bimetal to perform over-current protection at load currents exceeding the rated threshold.
Magnetic Protection Function(Ensures safety under short circuit conditions) A vital function of the breaker is tosafeguard the connected circuit against shortcircuits. Short circuits may occur due to thecontact between phases orphase-ground contact. The resultinghigh current surge can severely damage cables, making itimperative to interrupt the system energy swiftly.The breaker must execute instant disconnection toprotect the connected load.This critical function is accomplished by a mechanical openingmechanism thatactivates throughmagnetization, 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