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

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TKDM3 series Moulded-case circuit breaker (MCCB)

TKDM3 series Moulded-case circuit breaker (MCCB) (hereinafter referred to as Circuit breaker) is suitable for AC 50Hz circuits with a rated insulation voltage of 1000V and a rated voltage of 690V or less, and a rated working current up to 800A. It is generally used for power distribution, protecting lines and power equipment from damage caused by overloads, short circuits, and undervoltage faults. It can also be used for motor protection in locations with infrequent switching and motor starting.

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Moulded-case circuit-breaker (MCCB)

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TKDM3 series Moulded-case circuit breaker (MCCB)

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Product Details

Scope of Application and Main Features

The TKDM3 series Moulded-case circuit-breaker (MCCB) (hereinafter referred to as Circuit-breaker) is suitable for AC 50Hz circuits with a rated insulation voltage of 1000V and a rated voltage of 690V or less, and a rated working current up to 800A. It is generally used for power distribution, protecting lines and power equipment from damage caused by overloads, short circuits, and undervoltage faults. It can also be used for motor protection in locations with infrequent line switching and motor starting.

This series of Circuit-breakers features a compact structure, small size, high breaking capacity, and complete internal and external accessories.

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

Accessories can be quickly installed using a boxed, modular method without removing the main cover. User requirements can be responded to promptly without adjustment.

Standards Compliance

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

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

IEC 60947-4-1 and GB/T 14048.4 Low-voltage switchgear and controlgear - Electromechanical contactors and motor starters

IEC 60947-5-1 and GB/T 14048.5 Low-voltage switchgear and controlgear - Electromechanical control circuit devices

Operating and Installation Conditions

The ambient air temperature should not exceed +40℃, and the average temperature over 24 hours should not exceed +35℃. The lower limit of the ambient air temperature is -5℃; Note: For operating conditions where the ambient air temperature is higher than +40℃ or lower than -5℃, users should consult the manufacturer;

The installation altitude should not exceed 2000m;

At a maximum temperature of +40℃, the relative humidity of the air should not exceed 50%. Higher relative humidity is permissible at lower temperatures, for example, 90% at 20°C. Special measures should be taken for condensation occasionally caused by temperature changes;

The installation location should be free from explosive media, corrosive gases or conductive dust that could damage metal or insulation, and free from rain and snow;

Pollution degree: Class 3;

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

The Circuit-breaker should be installed and used according to the requirements of the Product Manual: Note: The TKDM3 series moulded case circuit breaker generally has top-in and bottom-out wiring (i.e., 1, 3, 5 are the power terminals, and 2, 4, 6 are the load terminals). When the breaking level code is M and the working voltage is AC400V, it can be connected with reverse wiring for power distribution systems;

Protection level IP30;

Model Meaning

TKD
1

M
2

3
3

250
4

M
5

P
6

/ 4
7

300
8

A
9

I
10

□
11

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	125、250、400、630、800
5	Breaking Level Code	C、L、M、H
6	Operation Mode Code	No code: Direct manual operation P: Electric operating mechanism Z: Rotary handle operating mechanism
7	Pole Number	3: 3 poles 4: 4 poles
8	Internal Accessory Code	300: No accessories Others see Trip mechanism and internal accessories table
9	Neutral Pole Type	Neutral pole (N pole) type for four-pole Circuit-breakers: Type A, Type B, Type C, Type D①
10	Overload Alarm Without Tripping	Blank: Standard configuration I: Overload alarm without tripping
11	Cabling Type	Blank: Front panel wiring Optional: Plug-in front panel wiring, plug-in rear panel wiring, connecting bar

Note:

①Neutral pole code explanation:

A: The N pole does not have an overcurrent trip unit installed, and the N pole is always connected, not switching with the other three poles;

B: The N pole does not have an overcurrent trip unit installed, and the N pole switches with the other three poles (N pole closes later and opens earlier);

C: The N pole has an overcurrent trip unit installed, and the N pole switches with the other three poles (N pole closes later and opens earlier);

D: The N pole has an overcurrent trip unit installed, and the N pole is always connected, not switching with the other three poles;

Main Technical and Performance Indicators of the Circuit-breaker

Frame Size Rated Current (A)		125
Model Number		TKDM3 - 125C	TKDM3 - 125L	TKDM3 - 125M		TKDM3 - 125H
Rated currentIn（A）		▲(10)、16、20、25、32、40、50、63、80、100、125
Poles		3	3	3、4		3
Rated insulation voltage Ui（V）		AC1000
Rated impulse withstand voltage Uimp（V）		8000
Rated voltage Ue（V）		AC400、AC500、AC690
Arcing distance（mm）		>50
Rated ultimate breaking capacity Icu（kA）	AC400V	35	40	70		100
	AC500V	-	-	50		-
	AC690V	-	-	20		-
Rated operating breaking capacity Ics（kA）	AC400V	22	30	50		70
	AC500V	-	-	40		-
	AC690V	-	-	10		-
Mechanical life（times）*	AC400V	8000
	AC690V	1500
机械寿命（次）*	Maintenance-free	20000
	With maintenance	40000
Dimensions (mm)	W	92		92	122	92
	L	150		150
	H	69		87
Neutral (N) Rated current		Same as Circuit-breaker Rated current

Main technical parameters and performance indicators of Circuit-breaker

Frame Size Rated Current (A)		250
Model Number		TKDM3 - 250C	TKDM3 - 250L	TKDM3 - 250M		TKDM3 - 250H
Rated currentIn（A）		100、125、140、160、180、200、225、250
Poles		3	3	3、4		3
Rated insulation voltage Ui（V）		AC1000
Rated impulse withstand voltage Uimp（V）		8000
Rated voltage Ue（V）		AC400、AC500、AC690
Arcing distance（mm）		>50
Rated ultimate breaking capacity Icu（kA）	AC400V	35	40	70		100
	AC500V	-	-	50		-
	AC690V	-	-	20		-
Rated operating breaking capacity Ics（kA）	AC400V	25	30	50		70
	AC500V	-	-	40		-
	AC690V	-	-	10		-
Mechanical life（times）*	AC400V	8000
	AC690V	1000
机械寿命（次）*	Maintenance-free	20000
	With maintenance	40000
Dimensions (mm)	W	107		107	145	107
	L	165		165
	H	86		105
Neutral (N) Rated current		Same as Circuit-breaker Rated current

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

Main technical parameters and performance indicators of Circuit-breaker

Frame Size Rated Current (A)		400
Model Number		TKDM3 - 400C	TKDM3 - 400L	TKDM3 - 400M		TKDM3 - 400H
Rated currentIn（A）		225、250、315、350、400
Poles		3	3	3、4		3
Rated insulation voltage Ui（V）		AC1000
Rated impulse withstand voltage Uimp（V）		8000
Rated voltage Ue（V）		AC400、AC500、AC690
Arcing distance（mm）		>50
Rated ultimate breaking capacity Icu（kA）	AC400V	35	50	70		100
	AC500V	-	-	65		-
	AC690V	-	-	20		-
Rated operating breaking capacity Ics（kA）	AC400V	35	50	70		75
	AC500V	-	-	50		-
	AC690V	-	-	15		-
Mechanical life（times）*	AC400V	7500
	AC690V	1000
机械寿命（次）*	Maintenance-free	20000
	With maintenance	40000
Dimensions (mm)	W	150		150	198	150
	L	257		257
	H	106.5		106.5
Neutral (N) Rated current		Same as Circuit-breaker Rated current

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

Main technical parameters and performance indicators of Circuit-breaker

Frame Size Rated Current (A)		630					800
Model Number		TKDM3 - 630C	TKDM3 - 630L	TKDM3 - 630M		TKDM3 - 630H	TKDM3-80oM		TKDM3-800H
Rated currentIn（A）		400、500、630					630、700、800
Poles		3	3	3、4		3	3、4		3
Rated insulation voltage Ui（V）		AC1000					AC1000
Rated impulse withstand voltage Uimp（V）		8000					8000
Rated voltage Ue（V）		AC400、AC500、AC690					AC400、AC500、AC690
Arcing distance（mm）		>100					>100
Rated ultimate breaking capacity Icu（kA）	AC400V	35	50	70		100	75		100
	AC500V	-	-	65		-	-		-
	AC690V	-	-	20		-	-		-
Rated operating breaking capacity Ics（kA）	AC400V	35	50	70		75	50		65
	AC500V	-	-	50		-	-		-
	AC690V	-	-	15		-	-		-
Mechanical life（times）*	AC400V	7500					7500
	AC690V	1000					1000
机械寿命（次）*	Maintenance-free	10000					10000
	With maintenance	20000					20000
Dimensions (mm)	W	182		182	140	182	210	280	210
	L	270		270			280
	H	110		110			115.5
Neutral (N) Rated current		Same as Circuit-breaker Rated current

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