MCCB Manufacturer 1000V Quality Circuit Breaker with BMC Unflaming Material

• Customization: Available
• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Manual Type
• Model NO.: DAM3-250
• 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
• Terminal: with Terminal Box
• Transport Package: Carton
• Specification: 63, 80, 100, 125, 160, 200, 250A
• Trademark: CDADA, OEM, ODM
• Origin: Shanghai, China
• HS Code: 8536200000
• Production Capacity: 40000PCS/Month

Product Description

Overview

The Dada DAM3-250 molded case circuit breaker, a remarkable product of Shanghai DaDa Electric Co., Ltd., boasts a rated current capacity of up to 250A. Designed for power distribution circuits with alternating currents of 50-60Hz, this versatile device supports a rated operating current up to 1000A. Ideal for use in electric motors, it excels in infrequent starting, overload protection, as well as safeguarding against short circuits and undervoltage conditions.

The DAM3 series stands out with a compact design, surpassing the DAM1 series by offering higher breaking capacity and superior energy efficiency. It's a smart, space-saving solution for modern electrical needs.

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 of 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 is engineered to automatically interrupt the current flow when it surpasses the preset release threshold. The term 'molded case' refers to the robust plastic insulator that forms the frame of the device, effectively isolating the conductor from the metal grounding components.

Working Principle
Operating the DAM3-250 involves manual or electric closing of the main contact. Once closed, a free release mechanism securely locks the main contact in place. The overcurrent trip coil and thermal trip element are integrated in series with the main circuit, while the undervoltage trip coil is wired in parallel with the power supply. This intricate configuration ensures reliable and efficient circuit protection.