China YCM8-HU Photovoltaic AC MCCB Manufacture and Factory

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YCM8-HU Photovoltaic AC MCCB

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YCM8-HU Photovoltaic AC MCCB

General

YCM8-HU series AC molded case circuit breaker is suitable for AC grid circuits with rated voltage up to AC1140V and rated current of 800A.

The circuit breaker has the functions of overload long-time delay protection and short-circuit instantaneous protection, and is used to distribute electric energy and protect lines and power supply equipment from overload, short circuit and other faults.

Product Details

General

YCM8-HU series AC molded case circuit breaker is suitable for AC grid circuits with rated voltage up to AC1140V and rated current of 800A.

Features

Ultra-wide breaking capacity:

rated working voltage up to AC1140V and rated current up to 800A. Under AC800V working conditions, Icu=Ics=36.5KA, ensuring reliable short-circuit protection.

Ultra-long arc-extinguishing chamber: the arc-extinguishing chamber has been improved as a whole, with more arc extinguishing plates, greatly improving the product's breaking characteristics.

Application of narrow-slot arc-extinguishing technology:advanced current-limiting and narrow-slot arc-extinguishing technology is applied,which enables the high voltage and high short-circuit current to be cut off very quickly, facilitating the extinguishing of the arc in the shortest possible time, effectively limiting the energy and current peak, and greatly reducing damage to cables and equipment caused by short-circuit currents.

Selection
YCM8	250	S	HU		/	3	125A		AC800
Model	Shell frame current	Breaking capacity	Product type		/	Number of poles	Rated current		Rated voltage
YCM8	250(63~250) 320(250~320) 400(225~400) 630(500~630) 800(700~800)	S:Standard breaking N:Higher breaking	HU: AC high voltage		/	3	63,80,100,125 140,160,180 200,225,250 280,315,320 350,400,500 630,700,800		AC800 AC1140
Accessory selection rules
YCM8	MX			1		AC230V
Model	Accessories			Adapter shell frame		Accessory voltage
YCM8	OF:Auxiliary contact MX:Shunt release SD:Alarm module Z:Manual operation mechanism P:Electric operating mechanism TS2:Terminal shield 2P TS3:Terminal shield 3P			1:250/320 2:400/630/800		MX: AC110V AC230V AC400V DC24V		P: AC400V AC230V DC220V

Technical data

Model

YCM8- 250HU

YCM8- 320HU

YCM8- 400HU

Appearance

Shell frame current Inm(A)

250

320

400

Number of poles of products

AC working voltage(V)

415

690

800

1140

415

690

800

1140

415

690

800

1140

Rated insulation voltageUi(V)

AC1150

Rated impulse withstand voltage Uimp(KV)

Rated current In(A)

63, 80, 100, 125,

140, 160, 180,

200, 225, 250

280, 315, 320

225, 250, 315,

350, 400

Ultimate short-circuit

breaking capacity Icu (kA)

36.5

100

Running short-circuit breaking capacity Ics(kA)

Ics=100%Icu

Wiring method

Up in and down out, down in and up out, Down in and up out, up in and down out(3P)

Isolation function

Yes

Tripping type

Thermal-magnetic type

Electrical life(time)

3000

2000

3000

2000

1000

700

Mechanical life(time)

20000

10000

Standard

IEC/EN60947-2

Attached accessories

Shunt、Alarm、Auxiliary、Manual operation、Electric operation

Certifications

Overall

dimension (mm)


	W


D

Width(W)

107

182

Height(H)

180

250

Depth(D)

126

165

Note: ① 2P connection in series, ② 3P connection in series

Technical data

Model

YCM8-630HU

YCM8-800HU

Appearance

Shell frame current Inm(A)

630

800

Number of poles of products

AC working voltage(V)

415

690

800

1140

415

690

800

1140

Rated insulation voltageUi(V)

AC1150

Rated impulse withstand voltage Uimp(KV)

Rated current In(A)

500, 630

630,700, 800

Ultimate short-circuit

breaking capacity Icu (kA)

36.5

100

Running short-circuit breaking capacity Ics(kA)

Ics=100%Icu

Wiring method

Up in and down out, down in and up out, Down in and up out, up in and down out(3P)

Isolation function

Yes

Tripping type

Thermal-magnetic type

Electrical life(time)

1000

700

1000

700

Mechanical life(time)

5000

Standard

IEC/EN60947-2

Attached accessories

Shunt、Alarm、Auxiliary、Manual operation、Electric operation

Certifications

Overall

dimension (mm)


	W


D

Width(W)

182

Height(H)

250

Depth(D)

165

Accessories

Accessory code

Accessory name

250/320HU

400/630/800HU

Alarm contact

Shunt release

Auxiliary contact(1NO1NC)

OF+OF

Auxiliary contact(2NO2NC)

MX+OF

Shunt release+ Auxiliary contact(1NO1NC)

OF+OF

2 sets of auxiliary contacts(2NO2NC)

MX+SD

Shunt release + Alarm contact

OF+SD

Auxiliary contact + Alarm contact

MX+OF+SD

Shunt release Auxiliary contact(1NO1NC)+ Alarm contact

OF+OF+SD

2 sets of auxiliary contacts(2NO2NC)+Alarm contact

Auxiliary contact

Auxiliary contact current parameters

Rated current of shell frame grade	Agreed heating current Ith	The rated working current at AC 400V
Inm<320	3A	0.30A
Inm>400	6A	0.40A

Auxiliary contact and its combination

When the circuit breaker is in the "off" position

F12

F14 F22

F24

F11

F21

F12 F14

F11

When the circuit breaker is in the "on" position

F12 F14

F11

F22 F24

F21

F12 F14

F11

Alarm contact

Alarm contact and its combination

Alarm contact Ue=220V, Ith=3A

When the circuit breaker is in the "off"and "on"position

B14 B14

B11

When the circuit breaker is in the "free trip" position

B14 B12

B11

Shunt release

Generally installed in the Phase A of the circuit breaker, when the rated control power voltage is between 70% - 110%, the shunt releaseshall make the circuit breaker trip reliably under all operating conditions.

Control voltage: conventional: AC 50Hz, 110V, 230V, 400V, DC 24V.

Note: when the power supply of the control circuit is DC24V, the following figure is recommended for the design of the shunt control circuit.

KA: DC24V intermediate relay, contact current capacity is 1A

K: the microswitch in series with the coil inside the release aid is a normally closed contact. When the circuit breaker is disconnected, the contact will automatically disconnect and close when it is closed.

Wiring diagram

Installation method and overall dimension of external accessories

Model and specification of rotating operating handle mechanism

Model	Installation dimension(mm)				Central value of the operating handle relative to the circuit breaker(mm)
Model	A	B	H	D
YCM8-250/320HU	157	35	55	50-150	0
YCM8-400/630/800HU	224	48	78	50-150	±5

Schematic diagram of hole opening of rotating operating handle

Overall and mounting dimension of external accessories

Model and specification of rotating operating handle mechanism

Model	H	B	B1	A	A1	D
YCM8-250/320HU	188.5	116	126	90	35	4.2
YCM8-400/630/800HU	244	176	194	130	48	6.5

Model	L	A		B	C	E
Model	L	Without zero arcing cover	With zero arcing cover	B	C	Without zero arcing cover	With zero arcing cover
YCM8-250HU	40	100	165	40	40	100	165
YCM8-320HU	40	100	165	40	40	100	165
YCM8-400HU	40	100	165	40	40	100	165
YCM8-630HU	40	100	165	40	40	100	165
YCM8-800HU	40	100	165	40	40	100	165

YCM8-HU Photovoltaic AC MCCB

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