MCCB Dam3-630 3p 400-630A CB Approved Molded Case Circuit Breaker

• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Manual Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Arc Chamber
• Installation: Fixed
• Structure: MCCB
• Model NO.: DAM3-630
• 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
• Terminal: with Terminal Box
• Transport Package: Carton
• Specification: 400, 500, 630A
• Trademark: CDADA, OEM, ODM
• Origin: Shanghai, China
• HS Code: 8536200000
• Production Capacity: 10000PCS/Month

Product Description

Overview


The rated current of DAM3-630 molded case circuit breaker can reach up to 630A. These electrical devices are suitable for the protection of power distribution circuits with an alternating current of 50-60Hz and a rated operating current up 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.

The circuit breakers feature the characteristics of small volume, high breaking capacity, and short flashover during operation.

Electrical parameters of DAM3-630 molded case circuit breaker

Rated current of frame size Inm [A]		630
Rated current[A]		315-630
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]		N	S	H
(AC)50-60HZ 220/230V[KA]		55	80	105
(AC)50-60HZ 400/415V [KA]		36	55	70
(AC)50-60HZ 690V [KA]		15	20	25
(DC)250V-2 Poles in series		35	50	65
(DC)500V-2 Poles in series		18	22	30
(DC)750V-4 Poles in series		30	42	55
(DC)1000V-4 Poles in series		25	35	45
Rated service short-circuit breaking capacity, Ics [KA]
(AC)50-60HZ 220/230V[%Icu]		60%	60%	60%
(AC)50-60HZ 400/415V [%Icu]		60%	60%	60%
(AC)50-60HZ 690V [%Icu]		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 DAM3-630 molded case circuit breaker

Endurance	Total cycles	6000
	Electrical endurance	1000
	Mechanical endurance	5000
Basic dimensjons-fixed version	3/4 Poies W[mm]	140/210
	3/4 Poies H[mm]	100
	H1[mm]	135
	3/4 Poies L[mm]	215

Introduction
The DAM3-630 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.

Working principle
The main contact of DAM3-630 molded case circuit breaker is manual manipulation or electric closing. After the main contact is closed, the free release mechanism locks the main contact into the closing position. The overcurrent trip coil and the thermal trip element are connected in series with the main circuit. The undervoltage trip coil and the power supply are connected in parallel.