MCCB 3p 250A Moulded Case Circuit Breaker Fixed Type Switch

• 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 to handle current seamlessly during normal operations, swiftly disconnecting during short circuits, overloads, and impermissible bucking. Additionally, they excel in operational actuation and tripping of electric circuit segments. Tailored for integration into electric units, these breakers boast an operational voltage cap of 400V and cater to rated currents ranging from 12.5 to an impressive 1600A.

These circuit breakers are meticulously engineered to meet and exceed the stringent requirements of EN 60947-1 and EN 60947-2, ensuring optimal performance and reliability.

Thermal-Magnetic Circuit Breakers:

Thermal Protection Function: (Specifically designed for safeguarding against overload conditions)
The thermal protection prowess is delivered through a sophisticated bimetal component, a fusion of two metals with distinct heat expansion coefficients. When heated, the bimetal elegantly bends towards the lesser expanding metal, triggering a notch that deftly releases to disengage the breaker. The bimetal's bending velocity is intricately linked to the magnitude of the current traversing through the breaker, as increased current translates to heightened heat generation. Thus, the breaker fulfills its overcurrent protection duty efficiently at load currents surpassing the rated current, courtesy of the reliable bimetal mechanism. Magnetic Protection Function: (Designed for enhanced safeguarding under short circuit conditions) Another vital role of the breaker is to vigilantly protect the associated circuit against short circuits. Such short circuits might emerge from phase-phase or phase-ground contacts. In these scenarios, a substantial surge of current courses through the cables, necessitating an immediate interruption of system energy to preempt thermal protection delays. The breaker must execute an instantaneous opening to shield the connected load. The component achieving this is a mechanical opening mechanism, activated by the dynamic magnetization induced by the magnetic field generated by the short circuit current, ensuring rapid and effective load 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