Dam3-400 MCCB Compact Economical Type Moulded Case Circuit Breaker Factory Price CB Approved for Switchgear Application

• Customization: Available
• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Manual Type
• Model NO.: DAM3-400
• Speed: Normal Type Circuit Breaker
• 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, RoHS
• Base: BMC Unflaming Material
• Rated Insulation Voltage: 1000V
• Rated Operation Voltage: 400/415V
• Transport Package: Carton
• Specification: 250, 315, 400A
• Trademark: CDADA, OEM, ODM
• Origin: Shanghai, China
• HS Code: 8536200000
• Production Capacity: 20000PCS/Month

Product Description

Overview



The rated current of the Dada DAM3-400 molded case circuit breaker can reach up to 400A. These electrical devices are suitable for the protection of power distribution circuits with an alternating current of 50-60Hz and a rated operating current to 1600A. They can also be used in electric motors for infrequent starting and overload protection as well as protection against short circuiting and undervoltage conditions.

Compared to the DAM1 series, the DAM3 series are designed for smaller volume, higher breaking capacity, offering better energy savings.

Electrical parameters of DAM3-400 molded case circuit breaker

Rated current of frame size Inm [A]		400
Rated current [A]		200-400
Number of poles		3 / 4
Rated operating voltage	(AC)50-60HZ [V]	400/690
	DC [V]	250/1000
Rated impulse withstand voltage Uimp [KV]		8
Rated insulation voltage Ui [V]		750
Test voltage at industrial frequency for 1 min [V]		3000
Rated ultimate short-circuit breaking capacity Icu [KA]		C	N	S	H
(AC)50-60HZ 220/230V[KA]		45	55	80	105
(AC)50-60HZ 400/415V [KA]		30	36	55	70
(AC)50-60HZ 690V [KA]		12	15	20	25
(DC)250V-2 Poles in series		30	35	50	65
(DC)500V-2 Poles in series		12	18	22	30
(DC)750V-4 Poles in series		18	30	42	55
(DC)1000V-4 Poles in series		15	25	35	45
Rated service short-circuit breaking capacity, Ics [KA]
(AC)50-60HZ 220/230V [%Icu]		60%	60%	60%	60%
(AC)50-60HZ 400/415V[%Icu]		60%	60%	60%	60%
(AC)50-60HZ 690V [%Icu]		60%	60%	60%	60%
category of utilisation(EN 60947-2)		A
Isolation condition		Bitmap
Reference standard		IEC/EN 60947-2/GB 14048.2
Interchangeability		Bitmap
Versions	Fixed	Bitmap
	Plug-in	Bitmap
	Draw-out	Bitmap

Physical parameters of DAM3-400 molded case circuit breaker

Endurance	Total cycles	8000
	Electrical endurance	1000
	Mechanical endurance	7000
Basic dimensions-fixed version	3/4 Poies W[mm]	120/159	140/210
	3/4 Poies H[mm]	100	100
	H1[mm]	133.5	135
	3/4 Poies L[mm]	180	215

Introduction
The DAM3-400 molded case circuit breaker automatically cuts off the current when the current exceeds the release setting. The molded case refers to the plastic insulator used as the frame of the device to insulate the conductor and the metal grounding component.