TKDM3-HU series high voltage level Moulded-case circuit-breaker (MCCB)-Taikai Electric Appliance-Dedicated to low-voltage equipment

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TKDM3-HU series high voltage level Moulded-case circuit-breaker (MCCB)

The TKDM3-HU series high-voltage Moulded-case circuit breaker (MCCB) (hereinafter referred to as Circuit breaker), with a rated insulation voltage of 1250V, is suitable for AC 50Hz Rated voltage up to 1140V, Rated current up to 400A. It is a newly launched high-voltage, high-performance thermal-magnetic Moulded-case circuit breaker (MCCB) product. The Circuit breaker has overload and short-circuit protection functions, protecting lines and power equipment from damage. The product is widely used in new energy, power systems, factories, and other occasions.

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Moulded-case circuit-breaker (MCCB)

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TKDM3-HU series high voltage level Moulded-case circuit-breaker (MCCB)

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Product Details

Application Range

The TKDM3-HU series high-voltage Moulded-case circuit breaker (MCCB) (hereinafter referred to as Circuit breaker), with a rated insulation voltage of 1250V, is suitable for AC 50Hz Rated voltage up to 1140V, Rated current up to 400A. It is a newly launched high-voltage, high-performance thermal magnetic Moulded-case circuit breaker (MCCB) product of our company. The Circuit breaker has overload and short-circuit protection functions, protecting lines and power equipment from damage. The product is widely used in new energy, power systems, factories, and other occasions.

This series of Circuit breakers has an isolation function, and its corresponding symbol is:

Standards Compliance

IEC 60947-1 and GB/T 14048.1 Low-voltage switchgear and controlgear General rules

IEC 60947-2 and GB/T 14048.2 Low-voltage switchgear and controlgear Circuit breakers

Standard Working Conditions and Installation Conditions

Applicable ambient temperature -40℃~+70℃, and the average temperature value for 24h does not exceed +35℃;

The altitude of the installation location does not exceed 2000m;

When the highest temperature is +40℃, the relative humidity of the air does not exceed 50%. At lower temperatures, higher relative humidity is allowed, for example, up to 90% at 20℃. Special measures should be taken for occasional condensation due to temperature changes;

Pollution level: Level 3;

The maximum inclination of the Circuit breaker installation ≤ ±22.5°;

The product is installed in a medium without explosion hazards, and in a place where the medium is not enough to corrode metal and destroy the insulation of gases and conductive dust;

Places without rain and snow;

Installation category: The installation category of the main circuit of the Circuit breaker is Y, and the installation category of the auxiliary circuit and control circuit not connected to the main circuit is G;

The Circuit breaker should be installed and used according to the requirements of the product manual;

Innovative Design, Perfect Quality

Large creepage distance technology;

High altitude up to 4000m;

Operable from -40°C to +70°C;

Arc back-blowing prevention technology;

Using magnetic blowing, air blowing, and other stray current elimination technologies;

Internal connections use advanced welding technology, with low temperature rise;

Compact structure, small size, high breaking capacity, complete internal and external accessories;

A new modular arc extinguishing device is installed at the front end of the Circuit breaker, with independently set wiring cable channels and arc extinguishing channels to ensure reliable disconnection of the power distribution line under high current and high voltage conditions;

Model and Meaning

TKD
1

M
2

3
3

250
4

HU
5

□
6

P
7

3
8

300
9

Serial Number	Description	Model Meaning
1	Enterprise code	TKD: Shandong Taikai Electrical Appliance Co., Ltd.
2	Product Category	M: Moulded-case circuit breaker (MCCB)
3	Design SN	3
4	Frame size	250、320、350、400
5	Voltage Level Code	HU: High Voltage Level
6	Breaking level code	M、H、R
7	Operation mode code	No code: Direct manual operation P: Electric operating mechanism Z: Rotary handle operating mechanism
8	Pole number	3: 3 poles
9	Internal accessory code	300: No accessories Others see the tripping method and internal accessories table

Main technical parameters and performance indicators of the Circuit breaker

Model		TKDM3-250HU			TKDM3-320HU			TKDM3-350HU			TKDM3-400HU
frame size Rated current（A）		250			320			350			400
Rated current In（A）		63、80、100、125、140、160、180、200、225、250			63、80、100、125、140、160、180、200、225、250、280、315、320			250、280、315、320、350			225、250、315、350、400
Number of Poles		3			3			3			3
Rated insulation voltage Ui（V）		1250			1250			1500			1250
Rated voltage Ue（V）		800/1000			690/800/1000/1140			690/800/1000/1140			800/1000
Rated impulse withstand voltage Uimp（kV）		12			12			12			12
Arcing distance（mm）		>50			>100			>100			>50
Power frequency withstand voltage (1min)		3500			3500			3500			3500
Breaking capacity code		M	H	R	M	H	R	M	H	R	M	H	R
Rated ultimate breaking capacity Icu（kA）	AC690V	-	-	-	80	-	-	80	-	-	-	-	-
	AC800V	40	50	50	40	50	-	40	50	-	30	36.5	50
	AC1000V	12	15	15	12	25	-	12	25	-	12	15	15
	AC1140V	-	-	-	-	20	-	-	20	-	-	-	-
Rated operating breaking capacity Ics（kA）	AC690V	-	-	-	80	-	-	80	-	-	-	-	-
	AC800V	30	40	50	40	50	-	40	50	-	23	36.5	50
	AC1000V	12	15	15	12	25	-	12	25	-	12	15	15
	AC1140V	-	-	-	-	20	-	-	20	-	-	-	-
Mechanical life (times) *		20000			10000			10000			10000
Mechanical life (times) *	AC690V	-			1500			1500			-
	AC800V	1500			1500			1500			1500
	AC1000V	1000			1000			1000			1000
	AC1140V	-			1000			1000			-
Instantaneous release		140A and above: 5In or 10In
		Below 140A: 10In
Dimensions (mm)	W	115			140			140			150
	L	245			245			245			353
	H	98			98			98			107

Note: Terminals 1, 3, and 5 of the circuit breaker are connected to the transformer side, and terminals 2, 4, and 6 are connected to the inverter side.

According to GB14048.1, the term "life" refers to the rated number of operations that an electrical appliance can complete before repair or parts replacement.