High Voltage 250 AMP MCCB with 1000V Rating

• 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 by Shanghai DaDa Electric Co., Ltd., are precision-engineered to ensure seamless current conduction in standard operations and provide robust protection against short circuits, overloads, and other electrical anomalies. These superior breakers are designed for electric units with an operative voltage up to 400V, supporting rated currents from 12.5A to a substantial 1600A.

Our products comply with the stringent standards of EN 60947-1 and EN 60947-2, ensuring top-notch quality and reliability.

Thermal-Magnetic Circuit Breakers:

Thermal Protection Function: (Protects under overload conditions)
At the heart of our thermal protection lies the bimetal mechanism, a sophisticated blend of two metals with differing thermal expansion rates. When exposed to heat, the bimetal bends toward the metal with a lower expansion rate, activating a notch that triggers the breaker mechanism to disable the circuit. The bending speed correlates directly with the current size, ensuring efficient overcurrent protection for currents exceeding the rated load. This innovative approach ensures reliable overcurrent protection by the bimetal at load currents higher than the rated capacity.
Magnetic Protection Function(Provides protection under short circuit conditions)One critical function of our breaker is to safeguard the connected circuit againstshort circuits. Such faults may arise from phase-to-phase contacts or phase-to-ground shorts. When a short circuit occurs, an exceptionally high current flows through the cables, necessitating an immediate energy cut-off to prevent thermal damage.Given the urgency of these situations, the breaker must operate instantaneously toshield the connected load. A mechanical opening mechanism, driven by the magneticfield generated by the short circuit current, fulfills this critical protection role. Thismechanism ensures the system remains secure, offering swift and reliable responseto electrical faults, thereby guaranteeing the integrity and safety of the entireelectrical system.Our advanced technology ensures that the breaker performs instantaneous openingto protect the load and maintain the overall system's safety. The mechanicalopening mechanism is activated by the magnetic field generated by the shortcircuit current, assuring prompt andeffective interruption of power when needed most.

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