Cdada Quality MCCB with Leakage Protection and Intelligent Features

• Customization: Available
• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Manual Type
• Model NO.: DAM3-250
• 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
• 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 boasts an impressive rated current of up to 250A, making it an exceptional choice for power distribution circuits utilizing alternating currents of 50-60Hz and a rated operating current up to 1000A. This versatile device is also ideal for electric motors requiring infrequent starting, overload protection, and safeguarding against short circuits and undervoltage conditions.

The DAM3 series marks a significant advancement over the DAM1 series, offering a reduced volume for space efficiency, enhanced breaking capacity for superior performance, and notable energy savings for cost-effective operation.

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 innovative DAM3-250 molded case circuit breaker is engineered to automatically disconnect the current when it surpasses the release setting, ensuring optimal safety. The term 'molded case' refers to the robust plastic insulator that forms the device's frame, effectively insulating the conductor and the metal grounding component.

Working principle
The DAM3-250 molded case circuit breaker features a main contact that can be manually manipulated or electrically closed. Once the main contact is secured, the free release mechanism locks it in the closed position. The overcurrent trip coil and thermal trip element are serially connected with the main circuit, while the undervoltage trip coil is arranged in parallel with the power supply, ensuring comprehensive protection and reliability.