Cdada MCCB 1000V Fixed Type Interruptor with Terminal Box and BMC Material

• 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 rated current of the Dada DAM3-250 molded case circuit breaker can reach an impressive 250A. These robust electrical devices are perfectly suited for power distribution circuits operating with an alternating current of 50-60Hz and a formidable rated operating current of up to 1000A. They are also highly effective in electric motors, providing indispensable protection for infrequent starts, overloads, short circuiting, and undervoltage conditions.

The DAM3 series stands out by boasting a more compact design compared to the DAM1 series, while offering superior breaking capacity. This series is engineered for exceptional energy savings, making it a forward-thinking choice for modern electrical systems.

Electrical parameters of the 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 the 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 designed to automatically interrupt the current flow when it exceeds a predefined release setting. The term 'molded case' refers to the high-strength plastic insulator that forms the device's frame, ensuring excellent insulation of the conductor and metal grounding components.

Working principle
The operation of the main contact in the DAM3-250 molded case circuit breaker can be achieved through manual manipulation or electric closing. Once the main contact is closed, the free release mechanism securely locks it in the closed position. The overcurrent trip coil and thermal trip element are meticulously connected in series with the main circuit, while the undervoltage trip coil is strategically connected in parallel with the power supply for optimal performance.