TKDM3Z series DC Moulded-case circuit breaker (MCCB)-Taikai Electric Appliance-Dedicated to low-voltage equipment

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TKDM3Z series DC Moulded-case circuit breaker (MCCB)

The TKDM3Z series DC Moulded-case circuit breaker (MCCB) (hereinafter referred to as Circuit breaker) is suitable for DC 1500V rated voltage and rated current up to 630A DC system environments. The Circuit breaker has overload and short-circuit protection functions, protecting lines and power supply equipment from damage. The product is widely used in new energy, power generation, power transmission and transformation, communications, industrial control, real estate, power supply, rail transit, industrial and public construction industries.

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Moulded-case circuit-breaker (MCCB)

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TKDM3Z series DC Moulded-case circuit breaker (MCCB)

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Product Details

Application Range

The TKDM3Z series DC Moulded-case circuit-breaker (MCCB) (hereinafter referred to as Circuit-breaker) is suitable for DC systems with a rated voltage of 1500V and a rated current up to 630A. 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 generation, power transmission and transformation, communication, industrial control, real estate, power supply, rail transit, and industrial and public construction industries.

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

Standards and Certifications

GB/T 14048.1 Low-voltage switchgear and controlgear Part 1: General rules

GB/T 14048.2 Low-voltage switchgear and controlgear Part 2: Circuit-breakers

GB/T 2423.1 Electrical and electronic products Environmental testing Part 2: Test A: Low temperature

GB/T 2423.2 Electrical and electronic products Environmental testing Part 2: Test B: High temperature

Stand 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 5000m;

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, 90% at 20℃. Special measures should be taken for dew occasionally caused by temperature changes;

Pollution degree: Grade 3;

The maximum inclination angle for Circuit-breaker installation is ±22.5°;

In places where there is no explosion hazard in the air and no gases or conductive dust that can corrode metal and damage insulation;

Places free from rain and snow;

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

The Circuit-breaker should be installed and used according to the product's Product Manual;

Innovative Design, Perfect Quality

Parallel built-in series double breaking point technology;

Large air gap technology;

Arc back-blowing prevention technology;

Using magnetic blowing, air blowing and other deionization technologies;

Box-type, modular internal accessory structure;

Internal connection uses advanced welding technology, low temperature rise;

Can meet various methods such as DC ungrounded, negative grounding, and center point grounding;

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

TKD
1

M
2

3
3

Z
4

250
5

GV
6

P
7

4
8

300
9

□
10

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	Circuit-breaker Applicable Method	Z: Applicable to DC
5	frame size	100、125、225、250、400、630
6	Voltage Level Code	Inm:250 frame DC750V、DC500V: None DC1000V，Ics=20kA: None DC1500V，Ics=40kA: GV DC1500V，DC1250V: GV Inm:630 frame DC1500V: GV DC1500V and below: None
7	Operation mode code	No code: Direct handle operation P: Electric operating mechanism Z: Rotary handle operating mechanism
8	Pole number	3: 3 poles 4: 4 poles
9	Internal accessory code	300: No accessories Others see the tripping method and internal accessories table
10	Power/Load Cabling type	E type, F type, G type, H type, I type, J type

Main technical parameters and performance indicators of the Circuit-breaker

Model		TKDM3Z-250		TKDM3Z-250GV		TKDM3Z-500GV	TKDM3Z-630 TKDM3Z-630GV
frame sizeRated current（A）		250		250		500	630
Rated currentIn（A）		16、20、25、32、40、50、63、80、100、125、140、160、180、200、225、250		100、125、140、160、180、200、225、250		225、250、315、350、400、500	250、315、350、400、500、630
Pole number		3	4	4		4	3	4
Rated insulation voltage Ui（V）		DC1000		DC1600		DC1500	DC1600
Rated impulse withstand voltage Uimp（V）		8000		12000		12000	12000
Rated voltage Ue（V）		DC500、DC750	DC750、DC1000	DC1000	DC1250 DC1500	DC1500	DC500、DC750	DC1000、DC1250、DC1500
Arcing distance (mm)		>50		>50		>100	>100
Rated ultimate breaking capacity Icu (kA)	DC500	65	—	—		—	65	—
	DC750	40	50	—		—	40	50
	DC1000	—	40	40		40	—	40
	DC1250V DC1500V	—	—	20		20	—	20
Rated operating breaking capacity Ics (kA)	DC500	65	—	—		—	65	—
	DC750	20	50	—		—	20	50
	DC1000	—	20	40		—	—	20
	DC1250V DC1500V	—	—	20		20	—	20
Mechanical life (times) *		5000		5000		1000	1000
Mechanical life (times) *	Maintenance-free	10000		10000		5000	5000
Mechanical life (times) *	Requires maintenance	20000		20000		10000	10000
Dimensions (mm)	W	107	142	142		198	182	242
	L	168	168	200		257	270	270
	H	105	105	105		108	115	115

★According to GB/T 14048.1, the term "life" refers to the probability of the number of operations an electrical appliance can complete before repair or parts replacement.