125A MCCB 3p High Quality Distribution Breaker with 400/415V Operation Voltage

• Customization: Available
• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Manual Type
• Model NO.: DAM1-125
• Speed: High-Speed Circuit Breaker
• Arc-extinguishing Medium: Arc Chamber
• Installation: Fixed
• Structure: MCCB
• Poles Number: 3p, 4p
• Type: Circuit Breaker
• Function: Overcurrent Protection
• Certification: ISO9001-2000, CE, CB, CCC, Kema, Asta, Semko, RoHS
• Rated Insulation Voltage: 1000V
• Rated Operation Voltage: 400/415V
• Outline Dimension: 120X76X70mm
• Transport Package: Carton
• Specification: 12.5, 16, 20, 25, 32, 40, 50, 70, 80, 100, 125A
• Trademark: CDADA, OEM, ODM
• Origin: Shanghai, China
• HS Code: 8536200000
• Production Capacity: 40000PCS/Month

Product Description

Introduction

The DAM1 series circuit breakers from Shanghai DaDa Electric Co., Ltd. are meticulously engineered for the seamless conduction of current under normal conditions and proficiently interrupting it during short circuits, overloads, and other operational anomalies. These circuit breakers are designed for integration into electric units with an operative voltage ceiling of 400V, accommodating rated currents from 12.5A to 1600A.

These state-of-the-art devices proudly adhere to the stringent standards of EN 60947-1 and EN 60947-2.

Thermal-Magnetic Circuit Breakers:

Thermal Protection Function: (Protection Under Overload Conditions)
The bimetal, which constitutes the thermal protection, comprises two metals with divergent thermal expansion coefficients. Upon heating, the bimetal bends towards the metal with the lower expansion rate, triggering a mechanism that opens the breaker. The bending velocity of the bimetal is directly proportional to the current passing through the breaker, as an increased current elevates the heat level. This ingenious design ensures the breaker provides reliable overload protection, activating at load currents exceeding the rated current.
Magnetic Protection Function(Protection Under Short Circuit Conditions)Another pivotal role of the breaker is to safeguardthe connected circuit against short circuits. Short circuits may occur due tophase-to-phase contact orphase-to-ground contact. In suchevents, extremely high currents flow through the cables, necessitatingan expedited interruption of the system's energy supplyto prevent thermal damage. The breakermust execute instant disconnection to shield theconnected load. The component responsible for thiscritical function is a mechanicalopening mechanism thatoperates viamagnetization induced by the magnetic field generated by the short circuit current.

Thermal-Magnetic fixed type Circuit Breakers
Model			DAM1-125
Breaking Capacity Code			B	N	S
Rated Current of Frame size- Inm                                                                    (A)			125A
Rated Current-In(40,50 or 55ºC)                                                                      (A)			10 - 12,5 - 16 - 20 - 25 - 32(30) - 40 - 50 - 63(60) - 80 - 100 - 125A
Rated İnsulation Voltage -Ui(a.c.) 50-60Hz                                                    (V)			750V
Rated operation Voltage  -Ue(a.c.) 50-60Hz                                                    (V)			400V
Number of Pole			3P / 4P
Rated ultimate short Circuit breaking Capacity  kA  Icu AC400V/50Hz O-CO          (KA)			25	35	50
Rated service short Circuit breaking Capacity  kA  Ics AC400V/50Hz O-CO-CO     (KA)			12.5	17.5	37.5
Rated short-circuit breaking capacity Icm(peak)/cos ф AC400V/50HZ O-CO         (KA)			40/0.3	73.5/0.25	105/0.25
Rated impulse withstand Voltage -Uimp                                                                            (V)			10000
Dielectric Propery (V)			2500
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/0
	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	76
		4P	101
	L (mm)	3P	120
		4P	120
	H (mm)	3P	70
		4P	70
Weight	Fixed version 3P/4P		0.92/1.3
	Plug-in version 3P/4P		1.2/1.5
	Draw out version 3P/4P		-