Thermal Magnetic MCCB TDK2

Model and Meaning

Serial No.	Item meaning
①	Enterprise code:TALEMOD
②	MCCB(Molded Case Circuit Breaker)
③	Design No.
④	Frame grade current(A)optional code:Inm=63,Inm=125,Inm=250,Inm=400,Inm=630,Inm=800
⑤	UItimate short circuit breaking capacity:L:Standard (25,35,50kA);M:High breaking(50,65kA)
⑥	Operation mode:  Manual direct operation: no code; Z: Operate by rotating handle;P: Electric operation
⑦	No.of poles:,3:three-pole,4:four-pole
⑧	Release mode and accessory code
⑨	Code:For distribution: no code; 2: For motor protection
⑩	Rated current(See Technical Parameters in Table)
⑪	4-pole product code; 3-pole product no code
⑫	Installation modes are optional:Front wiring of board;Rear wiring of board;Plug-in wiring Special mode(negotiated by user and factory)
⑬	Other accessories are optional:Mechanical interlocking between two circuit breakers

Note: 4-pole product code

Type A: Overcurrent tripping element is not installed at N pole, and N pole is always ON and notcombined with other three poles.

Type B: Overcurrent tripping element is not installed at N pole, and N pole is combined with otherthree poles (N pole is combined first and then separated).

Type C: Overcurrent tripping element is installed at N pole, and N pole is combined with other threepoles (N pole is combined first and then separated).

Type D: Overcurrent tripping element is installed at N pole, and N pole is always ON and not combinedwith other three poles.

Main Technical Parameters

Model		TDK2-63		TDK2-125			TDK2-250			TDK2-400		TDK2-630		TDK2-800
Frame grade current Inm(A)		63		125			250			400		630		800
Rated current In(A)		10,16,20,25, 32,40,50,63		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		630,700, 800
No.of poles		3	4	3	4		3	4		3	4	3	4	3	4
Rated insulation voltage Ui(V)		800		1000
Rated operating voltage Ue(V)		AC400					AC400,AC690
Rated impulse withstand voltage Uimp(kV)		8					12
Flashover distance(mm)		50								100
Breaking capacity level				L	M	H	L	M	H	M	H	M	H	M	H
Ultimate short-circuit breaking capacity Icu(kA)	AC690V
	AC400V	25		50	70	100	50	70	100	70	100	70	100	75	100
Operating short-circuit breaking capacity Ics(kA)	AC690V
	AC400V	18		35	50	70	35	50	70	70	75	70	75	75	75
Operational performance (times)	Powered	1500		1500			1000			1000		1000		500
	Not powered	8500		8500			7000			4000		4000		2500
	Total	10000		10000			8000			5000		5000		3000

Scope of Application

TDK2 series molded case circuit breaker (hereinafter referred to as circuit breaker) with ratedinsulation voltage of 1000V is suitable for infrequent switching and

infrequent starting of motor incircuits with frequency of 50Hz AC, rated working voltage of 690V and below, and rated workingcurrent of 800A(TDK2-800 without

protection motor).

The circuit breaker has the functions of overloadshort circuit and undervoltage protection, which can protect the circuit and power supply equipmentfrom damage.

Three adjustable delay functions are added to the product, which are 0.8xIn, 0.9xIn,1.0xIn respectively.

Circuit breaker can be installed vertically (i.e. vertically) or horizontally (i.e. transversely).Circuit breaker has isolation function, and its corresponding symbol is:

Circuit breaker products comply with the following standards:

IEC60947-1 General

IEC60947-2 Low Voltage Circuit Breaker

IEC60947-4-1 Electromechanical Contactors and Motor Starters

IEC60947-5-1 Electromechanical Control Circuit Electrical Appliance

Protection Characteristics

For power distribution

Rated current (A)	Thermal release (ambient temperature+40℃)		Operating current of electromagnetic release(A)
	1.05In(cold)non-operating time (h)	1.3In(hot)operating time(h)
10≤In≤63	Non-operating within 1 hour	≤1	10In±20%
63<In≤100	Non-operating within 2 hours	≤2
100<In≤800	Non-operating within 2 hours	≤2	5In±20%,10In±20%

For protecting motors

Circuit breaker model	Thermal release (ambient temperature+40℃)					Operating current of electromagnetic release(A)
	1.0In  (cold) non-operating time(h)	1.2In(hot) operating time(h)	1.5In(hot) operating time(h)	7.2In(cold) operating time(h)	Tripping level
TDK2-63L,M,H	Non-operating within 2 hours	≤2	≤2min	0.5s<Tp≤5s	5	12In±20%
TDK2-125L,M,H			≤4min	4s<Tp≤10s	10
TDK2-250L,M,H TDK2-400M,H TDK2-630M,H TDK2-800M,H			≤8min	6s<Tp≤20s	20

Note: The operating current value of 10 ~ 25A electromagnetic trip of TDK2-63 L, M is 300A±20%