High Quality 250A MCCB Fixed Type Distribution Breaker for Safety

• 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 provide a robust solution for managing and interrupting current during normal operations, and ensuring safety by swiftly disengaging during short circuits, overloads, or unacceptable bucking. These breakers are specifically engineered for electrical systems with an operating voltage ceiling of 400V, supporting rated currents ranging from 12.5A to 1600A.

They adhere strictly to the comprehensive standards of EN 60947-1 and EN 60947-2, ensuring reliable performance.

Thermal-Magnetic Circuit Breakers:

Thermal Protection Function: (Safeguarding against overload conditions)
The bimetal component, crucial for thermal protection, marries two metals with distinct heat expansion properties. As the bimetal experiences heat, it bends towards the metal with a lower expansion coefficient, triggering a notch that releases the breaker mechanism, thus interrupting excessive current flow. The bending rate is proportional to the current magnitude, as increased current generates more heat, enabling the bimetal to effectively fulfill overload protection by disconnecting loads exceeding the rated current. Magnetic Protection Function: (For short circuit protection) An essential feature of the breaker is its ability to shield the connected circuit against short circuits. Such faults may arise due to phase-to-phase contact or phase-to-ground contact. In the event of a short circuit, massive currents surge through the cables, necessitating a rapid disconnection of system power to minimize damage. The thermal protection mechanism ensures instantaneous breaker operation, safeguarding the connected load. This function is executed by the mechanical opening mechanism, which activates through magnetization induced by the magnetic field generated by the short circuit current. This magnetic interaction ensures a swift response to prevent damage and maintain circuit integrity.

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