High Quality Electronic Mccb - DAM3-250 MCCB Molded Case Circuit Breaker – DaDa

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Email: charlotte.weng@cdada.com

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High Quality Electronic Mccb - DAM3-250 MCCB Molded Case Circuit Breaker – DaDa Detail:

Overview

The rated current of the Dada DAM3-250 molded case circuit breaker can reach up to 250A. These electrical devices are suitable for power distribution circuits with an alternating current of 50-60Hz and a rated operating current 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.
Compared to the DAM1 series, the DAM3 series are designed for smaller volume, higher breaking capacity, offering better energy savings.

Electrical Parameters of DAM3-250 Molded Case Circuit Breaker

Rated current of frame size Inm [A]		250
Rated current [A]		100-250			100-225
Number of poles		2 / 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]		B	C	N	S
(AC)50-60HZ 220/230V [KA]		30	36	50	75
(AC)50-60HZ 400/415V [KA]		18	25	36	50
(AC)50-60HZ 690V [KA]		6	8	12	15
(DC)250V-2 Poles in series		18	22	30	40
(DC)500V-2 Poles in series		9	12	15	20
(DC)750V-4 Poles in series		16	18	22	30
(DC)1000V-4 Poles in series		13	15	18	25
Rated service short-circuit breaking capacity, Ics [KA]
(AC)50-60HZ 220/230V [%Icu]		60%	60%	60%	50%
(AC)50-60HZ 400/415V [%Icu]		60%	60%	60%	50%
(AC)50-60HZ 690V [%Icu]		60%	60%	60%	50%
category of utilization (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	-

Physical Parameters DAM3-250 Molded Case Circuit Breaker

Endurance	Total cycles	10000
	Electrical endurance	1500
	Mechanical endurance	8500
Basic dimensions-fixed version	3/4 Poies W[mm]	70(2P) /104 /139
	3/4 Poies H[mm]	59	62.5
	H1[mm]	78.5	82
	3/4 Poies L[mm]	139

Introduction

The DAM3-250 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.

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