YCRS Rapid Shutdown Device

Cause

Why  do  photovoltaic  power  generation  systems  need  to  be  equipped  with  fast shutdown devices?The use of rapid shutdown devices in photovoltaic (PV) systems has become increasingly important due YCRS Rapid Shutdown Device YCRS Rapid Shutdown Deviceto concerns about safety in recent years. PV system accidents often result in fires, and 80% of these fires are caused by DC voltage arcing. Additionally, because  many distributed  PV systems are  installed in densely  populated areas or near industrial facilities, any accidents or failures can lead to significant losses of life and property. Therefore, many countries require that PV systems be equipped with component-level  rapid  shutdown  devices  in  order  to  eliminate  DC  voltage   in emergency  situations  and  protect  the  safety  of  firefighting  and  maintenance personnel, as well as to ensure the overall safety of the system. In the event of a fire or other emergency, maintenance personnel can quickly disconnect each component by  closing the YCRS  device  and  eliminating  the  DC  voltage,  thus  protecting  the safety of firefighting and maintenance personnel.

Selection

YCRS	—	50	2	MC4
Enterprise code		Rated  current	Wiring mode	Joint type
Firefighter safety switch		13: 13A 20: 20A 25: 25A 40: 40A 50: 50A	2: 2P 4: 4P 4B: 4B 6: 6P 8: 8P 10: 10P 12: 12P 14: 14P 16: 16P 18: 18P 20: 20P	MC4: MC4 joint /: No

Note: RP Rapid Shutdown Switch/Panel

Technical data

Model	YCRS-2/4P/4B	YCRS-6/8	YCRS-10	YCRS-12~20 Large
String voltage(VDC)	300~1500	300~1500	300~1500	300~1500
String current A	9~55	9~55	9~55	9~55
Return circuit	1/2	3/4/5	3/4/5	6/8/10
Isolation switch circuit connection method	2/4/4B	6/8	10	12/16/20
Working voltage	100Vac-270Vac	100Vac-270Vac	100Vac-270Vac	100Vac-270Vac
Rated voltage	230Vac	230Vac	230Vac	230Vac
Rated current	30mA	30mA	30mA	60mA
Starting (loading) current	100mA(AVG)	100mA(AVG)	100mA(AVG)	200mA(AVG)
Action current	300mA(Max)	300mA(Max)	300mA(Max)	600mA(Max)
Contact action conditions	24Vdc-300mA(Max)	24Vdc-300mA(Max)	24Vdc-300mA(Max)	24Vdc-300mA(Max)
Working temperature	-20℃-+50℃	-20℃-+50℃	-20℃-+50℃	-20℃-+50℃
Maximum temperature before automatic shutdown	+70℃	+70℃	+70℃	+70℃
Storage temperature	-40℃-+85℃	-40℃-+85℃	-40℃-+85℃	-40℃-+85℃
Protection degree	IP66	IP66	IP66	IP66
Overcurrent protection	II	II	II	II
Authentication	CE	CE	CE	CE
Standard	EN60947-1&3	EN60947-1&3	EN60947-1&3	EN60947-1&3
Mechanical life	10000	10000	10000	10000
Load operands(PV1)	>1500	>1500	>1500	>1500

Current/Voltage category parameter table(DC-PV1)

Data of ERS refer to built-in DC isolators. Data according to IEC60947-3(ed.3.2):2015,UL508i.Utilization category DC-PV1.					Pole number	Circuit	Model
600V	800V	1000V	1200V	1500V
32	26	13	10	5	2	1	YCRS-13 2
40	30	20	12	6	2	1	YCRS-20 2
55	40	25	15	8	2	1	YCRS-25 2
/	50	40	30	20	2	1	YCRS-40 2
/	55	50	40	30	2	1	YCRS-50 2
32	26	13	10	5	4	2	YCRS-13 4
40	30	20	12	6	4	2	YCRS-20 4
55	40	25	15	8	4	2	YCRS-25 4
/	50	40	30	20	4	2	YCRS-40 4
/	55	50	40	30	4	2	YCRS-50 4
32	26	13	10	5	4	1	YCRS-13 4B
40	40	40	30	20	4	1	YCRS-20 4B
/	/	55	40	30	4	1	YCRS-25 4B
/	/	/	/	45	4	1	YCRS-40 4B
/	/	/	/	50	4	1	YCRS-50 4B
32	26	13	10	5	6	3	YCRS-13 6
40	30	20	12	6	6	3	YCRS-20 6
55	45	25	15	8	6	3	YCRS-25 6
/	50	40	30	20	6	3	YCRS-40 6
/	55	50	40	30	6	3	YCRS-50 6
32	26	13	10	5	8	4	YCRS-13 8
40	30	20	12	6	8	4	YCRS-20 8
55	40	25	15	8	8	4	YCRS-25 8
/	50	40	30	20	8	4	YCRS-40 8
/	55	50	40	30	8	4	YCRS-50 8
32	26	13	10	5	10	5	YCRS-13 10
40	30	20	12	6	10	5	YCRS-20 10
55	40	25	15	8	10	5	YCRS-25 10
/	50	40	30	20	10	5	YCRS-40 10
/	55	50	40	30	10	5	YCRS-50 10
32	26	13	10	5	12	6	YCRS-13 12
40	30	20	12	6	12	6	YCRS-20 12
55	40	25	15	8	12	6	YCRS-25 12
/	50	40	30	20	12	6	YCRS-40 12
/	55	50	40	30	12	6	YCRS-50 12
32	26	13	10	5	14	6	YCRS-13 14
40	30	20	12	6	14	6	YCRS-20 14
55	40	25	15	8	14	6	YCRS-25 14
/	50	40	30	20	14	6	YCRS-40 14
/	55	50	40	30	14	6	YCRS-50 14

Note: RP Rapid Shutdown Switch/Panel

Current/Voltage category parameter table(DC-PV1)

Data of ERS refer to built-in DC isolators. Data according to IEC60947-3(ed.3.2):2015,UL508i.Utilization category DC-PV1.					Pole number	Circuit	Model
600V	800V	1000V	1200V	1500V
32	26	13	10	5	16	8	YCRS-13 16
40	30	20	12	6	16	8	YCRS-20 16
55	40	25	15	8	16	8	YCRS-25 16
/	50	40	30	20	16	8	YCRS-40 16
/	55	50	40	30	16	8	YCRS-50 16
32	26	13	10	5	18	8	YCRS-13 18
40	30	20	12	6	18	8	YCRS-20 18
55	40	25	15	8	18	8	YCRS-25 18
/	50	40	30	20	18	8	YCRS-40 18
/	55	50	40	30	18	8	YCRS-50 18
32	26	13	10	5	20	10	YCRS-13 20
40	30	20	12	6	20	10	YCRS-20 20
55	40	25	15	8	20	10	YCRS-25 20
/	50	40	30	20	20	10	YCRS-40 20
/	55	50	40	30	20	10	YCRS-50 20

Note: RP Rapid Shutdown Switch/Panel

Sketch map

YCRS-2/4P/4B series YCRS-2/4P/4B series YCRS-10 series YCRS-12~20 series

Wiring Diagram

Overall and mounting dimensions(mm)

2P/4P 6P 8P 10P 12~20P Note: the fire safety switch cannot be installed in the place with direct sunlight, and the sun visor is recommended. The specific specifications are subject to the specific product packaging.