TKDM3E series electronic moulded-case circuit breaker (MCCB)-Taikai Electric Appliance-Dedicated to low-voltage equipment

Home

TKDM3E series electronic moulded-case circuit breaker (MCCB)

The TKDM3E series electronic 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 of up to 800A. It is generally used for power distribution, distributing electrical energy, and protecting lines and power equipment from damage caused by overloads, short circuits, and undervoltages. It is used in places with infrequent line switching and infrequent motor starting. The Circuit-breaker has functions such as overload long-delay inverse time, short-circuit short-delay inverse time, short-circuit short-delay time-limit, short-circuit instantaneous, and ground protection.

Belonging Category:

Moulded-case circuit-breaker (MCCB)

Keywords:

TKDM3E series electronic moulded-case circuit breaker (MCCB)

86-538-8520889

Product Inquiry

Related Products

Product Details

Scope of Application and Main Features

The TKDM3E series electronic moulded-case circuit breaker (MCCB) (hereinafter referred to as Circuit-breaker) is suitable for AC 50Hz circuits with a rated insulation voltage of 1000V, rated voltage of 690V or less, and a rated working current of 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 is used in locations with infrequent line switching and infrequent motor starting. The Circuit-breaker has functions such as overload long-delay inverse time, short-circuit short-delay inverse time, short-circuit short-delay definite time, short-circuit instantaneous, and ground fault protection.

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, its corresponding symbol is:

This series of Circuit-breakers has pre-alarm indication and overload indication.

This series of Circuit-breakers uses modular accessories for quick installation.

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

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 upper limit of the ambient air temperature is +40℃, and the 24-hour average value does 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 with our company.

The installation altitude does not exceed 2000m.

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

In places where there are no explosive media in the air and no gases or conductive dust that can corrode metals and damage insulation.

Places free from rain and snow.

Pollution degree is level 3.

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

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 requirements of the product manual: Note: The TKDM3E series electronic moulded-case circuit breaker (MCCB) 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, the working voltage is AC400V, and it is used in a power distribution system, reverse wiring connection is allowed.

Protection level IP30.

Model and Meaning

TKD
1

M
2

3
3

E
4

250
5

M
6

P
7

3
8

300
9

A
10

丄
11

□
12

□
13

□
14

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	Trip unit code	E: Electronic trip unit
5	Frame size	125, 250, 400, 630, 800,
6	Breaking level code	Breaking level code: M, H
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 Trip method and internal accessories table
10	Neutral pole form	Neutral pole (N pole) form in four-pole Circuit-breaker: Type A, Type B, Type C, Type D ①
11	Overload alarm without tripping	Blank: Standard configuration I: Overload alarm without tripping ②
12	Cabling type	Blank: Front panel wiring Optional: Plug-in front panel wiring, plug-in rear panel wiring, connecting bar
13	Controller function	Blank: Conventional protection function (long delay, short-circuit short delay, instantaneous protection) Optional: Ground fault protection
14	Communication function	Blank: No communication function Optional: 485 communication, "four remote" communication function (communication protocol defaults to Modbus)

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;

②Explanation of the overload alarm without tripping function:

For this optional function, a function module with a thickness of 25mm needs to be added to the right side of the circuit breaker.

Main technical performance indicators of the circuit breaker

Model		TKDM3E-125			TKDM3E-160	TKDM3E-250
Rated currentIn（A）		32、63、125			160	250
Setting current (adjustable) Ir (A)		16、20、25、32	32、36、40、45、50、55、60、63	63、65、70、75、80、85、90、95、100、125	63、70、75、80、85、90、95、100、125、160	100、125、140、160、180、200、225、250
Rated insulation voltage Ui (V)		1000V
Rated impulse withstand voltage Uimp		8000V
Pole number		3
Rated voltage Ue (V)		AC 400V、AC 690V
Rated ultimate breaking capacity level		M		H		M	H
Rated ultimate breaking capacity Icu (kA)	AC 400V	50		85		50	85
Rated ultimate breaking capacity Icu (kA)	AC 690V	20		—		20	—
Rated operating breaking capacity Ics (kA)	AC 400V	35		50		35	50
Rated operating breaking capacity Ics (kA)	AC 690V	10		—		10	—
Rated short-time withstand current Icw (kA)/1s		5				5
Usage category		B				B
Mechanical life (times)		8000				8000
Mechanical life (times) *	Maintenance-free	20000				20000
Mechanical life (times) *	With maintenance	40000				40000
Dimensions (mm)	L	150				165
	W	92(3P)、122(4P)				107(3P)、142(4P)
	H	93				92
Arcing distance		≤50				≤50
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.

Model		TKDM3E-400		TKDM3E-630		TKDM3E-800
Rated currentIn（A）		400		630		800
Setting current Ir (A)		200、225、250、280、315、350、400		400、420、440、460、480、500、530、560、600、630		630、640、660、680、700、720、740、760、780、800
Rated insulation voltage Ui (V)		1000V
Rated impulse withstand voltage Uimp		8000V
Pole number		3
Rated voltage Ue (V)		AC 400V、AC 690V
Rated ultimate breaking capacity level		M	H	M	H	M	H
Rated ultimate breaking capacity Icu (kA)	AC 400V	65	100	75	100	75	100
Rated ultimate breaking capacity Icu (kA)	AC 690V	20	—	30	—	30	—
Rated operating breaking capacity Ics (kA)	AC 400V	42	65	50	65	50	65
Rated operating breaking capacity Ics (kA)	AC 690V	15	—	20	—	20	—
Rated short-time withstand current Icw (kA)/1s		5		8		10
Usage category		B		B		B
Mechanical life (times)		7500		7500		7500
Mechanical life (times) *	Maintenance-free	10000		10000		10000
Mechanical life (times) *	With maintenance	20000		20000		20000
Dimensions (mm)	L	257		280		280
	W	150(3P)、198(4P)		210(3P)、280(4P)		210(3P)、280(4P)
	H	107.5		116.5		116.5
Arcing distance		≤100		≤100		≤100
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.