TKDM1L series circuit breaker with residual current protection-Taikai Electric Appliance-Dedicated to low-voltage equipment

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TKDM1L series circuit breaker with residual current protection

The TKDM1L series circuit breaker with residual current protection (hereinafter referred to as circuit breaker) is suitable for AC 50Hz distribution networks with a rated insulation voltage of 1000V, a rated voltage of 400V, and a rated current up to 630A. It is used for infrequent switching and infrequent motor starting. The circuit breaker has overload, short-circuit, undervoltage, and residual current protection functions, protecting lines and power equipment from damage, and also providing protection against ground faults and indirect contact in the circuit.

Belonging Category:

Moulded-case circuit-breaker (MCCB)

Keywords:

TKDM1L series circuit breaker with residual current protection

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Product Details

Scope of Application and Main Features

The TKDM1L series circuit breaker with residual current protection (hereinafter referred to as circuit breaker) is suitable for AC 50Hz, rated insulation voltage 1000V, rated voltage 400V, and rated current up to 630A distribution networks for infrequent switching and infrequent motor starting. The circuit breaker has overload, short-circuit, undervoltage, and residual current protection functions, which can protect the lines and power equipment from damage, and also provide protection against ground faults and indirect contact in the circuit.

This series of circuit breakers features 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:

This series of circuit breakers has complete residual current protection functions, including time-delay type, non-time-delay type, and electrical alarm type.

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 electric appliances

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 altitude of the installation location should not exceed 2000m;

When the highest temperature is +40℃, the relative humidity of the air should 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 is no explosive medium in the air and no gases and conductive dust that can corrode metals and damage insulation;

In 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 product manual requirements; Note: The TKDM1L series residual current circuit breaker is generally top-in and bottom-out (i.e., 1, 3, 5 are the power terminals, and 2, 4, 6 are the load terminals). If the user needs a reverse-in type product, it should be specified when ordering;

Protection level IP30;

TKD
1

M
2

1
3

L
4

250
5

P
6

4
8

300
9

A
10

丄
11

□
12

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	1
4	Function Code	L: With residual current protection
5	Frame Size	100、125、225、250、400、630
6	Operation Mode Code	No code: Direct handle 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 method and internal accessories table
9	Neutral Pole Form	Neutral pole (N pole) form in four-pole circuit breaker: Type A, Type B, Type C, Type D ①
10	Leakage Current Alarm Module	Blank: Standard configuration I: Alarm trip, II: Alarm no trip
11	Cabling Type	Blank: Front panel wiring Optional: Plug-in front panel wiring, plug-in rear panel wiring, connecting block

Note:

①Neutral pole code explanation:

A: No overcurrent trip unit is installed on the N pole, and the N pole is always connected, not switched with the other three poles;

B: No overcurrent trip unit is installed on the N pole, and the N pole is switched with the other three poles (N pole closes later and opens later);

C: An overcurrent trip unit is installed on the N pole, and the N pole is switched with the other three poles (N pole closes later and opens later);

D: An overcurrent trip unit is installed on the N pole, and the N pole is always connected, not switched with the other three poles;

Technical Performance Indicators

Frame Size Rated Current (A)		100/125			225/250			400		630
Model		TKDM1L-100 TKDM1L-125			TKDM1L-225 TKDM1L-250			TKDM1L-400		TKDM1L-630
Rated currentIn (A)		16, 20, 25, 32, 40, 50, 63, 80, 100, 125			100, 125, 140, 160, 180, 200, 225, 250			225, 250, 315, 350, 400		400, 500, 630
Pole Number		2	3	4	2	3	4	3	4	3	4
Rated insulation voltage Ui (V)		AC 1000V
Rated impulse withstand voltage Uimp (V)		8000
Rated voltage Ue (V)		AC400
Arcing distance (mm)		>50						>100
Rated ultimate breaking capacity Icu (kA)	AC400V	50			50			65		65
Rated operating breaking capacity Ics (kA)	AC400V	35			35			42		42
Rated residual operating current I·n (mA)	Non-delayed	30/100/500			100/300/500			100/300/500		300/500/1000
Rated residual operating current I·n (mA)	Non-delayed, adjustable delay	100/300/500			100/300/500			100/300/500		300/500/1000
Rated residual non-operating current I·no (mA)		1/2I·n
Rated residual short-circuit closing (breaking) capacity I·m (kA)		1/4Icu
Mechanical life (times) *		8000			8000			7500		7500
Mechanical life (times) *	Maintenance-free	20000			20000			10000		10000
Mechanical life (times) *	Requires maintenance	40000			40000			20000		20000
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.

★In TKDM1L-125 enclosure, Rated current is only 125A; in TKDM1L-250 enclosure, Rated current is only 250A.

★TKDM1L-125 enclosure and TKDM1L-225 enclosure have 2P products; other enclosures do not have 2P products.