DAM3-630 MCCB Molded Case Circuit Breaker

DAM3-250 3P molded case circuit breaker

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 1000A. 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.

Size of DAM3-630 molded case circuit breaker
DAM3-630 MCCB Molded Case Circuit Breaker

DADA company manufactures miniature electrical switches such MCB Circuit breakers, RCD circuit breakers, ELCB breakers, RCBO, RCB circuit breakers, molded case circuit breaker, DADA started miniature circuit breaker manufacturing from 2004, already offered million various electrical circuit breakers into global markets for different electrical MCB breaker clients.

Index
electrical switch, MCCB, low voltage circuit breaker, circuit protector
Inquiry Form
Contact

Shanghai Dada Electric Co., Ltd

Add.: No.171 Yezhuang Road, Zhuanghang, Fengxian, Shanghai
Contacts: Mrs. Weng
Tel.: +86-21-57467000
Fax: +86-21-57467301
E-mail: charlotte.weng@foxmail.com

Other Products