High-Quality MCCB 3p 250A Fixed Type Distribution Circuit Breaker Switch

• Customization: Available
• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Manual Type
• Model NO.: DAM1-250
• 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 meticulously crafted to ensure seamless current flow during normal operations and to provide swift interruption in the event of short circuits, overloads, or inadmissible stresses. These breakers are also equipped for operational actuation and controlled tripping of electrical circuit segments. Optimally designed for electric units, they operate efficiently at a voltage ceiling of 400V with a rated current spectrum ranging from 12.5A to 1600A.

They meet the stringent standards set by EN 60947-1 and EN 60947-2.

Thermal-Magnetic Circuit Breakers:

Thermal Protection Function: (Safeguards against overload conditions)
The innovative bimetal technology within provides reliable thermal protection. Comprised of two metals with distinct thermal expansion coefficients, this bimetallic component bends towards the metal with a lower expansion when heated. This motion activates a notch mechanism that disengages the breaker, effectively halting the circuit. The bending rate of the bimetal is directly correlated with the current magnitude, as increased current elevates the heat generated. Thus, the breaker ensures robust overcurrent protection at load currents exceeding the rated threshold.
Magnetic Protection Function(Safeguards against short circuit conditions) Another critical role of the breaker is toshield the connected circuit from shortcircuits. Short circuits emerge from phase-to-phase orphase-to-ground contacts. Given thatshort circuits induce exceedingly high current flows through the cables, the system's energymust be interrupted promptly dueto the limitations of thermal protection. The breaker mustact instantaneously to safeguard the loadit is associated with. This crucialprotective role is performed by a mechanical openingmechanism activatedby the magnetic force generatedfrom the magnetic field formed 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