JR20-Shanghai Wenba Electric Co., Ltd.

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JR20

JR20 series thermal relay

JR20 series thermal relay is suitable for the power system of AC 50/60Hz, main circuit rated voltage up to 660V, current up to 630A, used as protecting AC three-phase motor against overload and phase losing, and forming electromagnetic with starter CJ20 series AC contactor. It has functions of phase-losing protection temperature compensation, trip indication. It can manually and automatically get back. The product conforms to GB14048.4, IEC60947-4 stardands.

Main technical Specifications

Type	Number	5WSetting Range(A)	For Contactor
JR20-10L	1R	0.1~0.15	CJ20 -10
	2R	0.15~0.23
	3R	0.23~0.35
	4R	0.35~0.53
	5R	0.53~0.8
	6R	0.8~1.2
	7R	1.2~1.8
	8R	1.8~2.6
	9R	2.6~3.8
	10R	3.2~4.8
	11R	4~6
	12R	5~7
	13R	6~8.4
	14R	7~10
	15R	8.6~11.6
JR20-16L	1S	3.6~5.4	CJ20 -10 -16
	2S	5.4~8
	3S	8~12
	4S	10~14
	5S	12~16
	6S	14~18
JR20-25L	1T	7.8~11.6	CJ20 -16 -25
	2T	11.6~17
	3T	17~25
	4T	21~29
JR20-63L	1U	16~24	CJ20 -40 -63
	2U	24~36
	3U	32~47
	4U	40~55
	5U	47~62
	6U	55~71
JR20-160L	1W	33~47	CJ20 -100 -160
	2W	47~63
	3W	63~84
	4W	74~98
	5W	85~115
	6W	100~130
	7W	115~150
	8W	130~170
	9W	144~176
JR20-250L	1X	130~195	CJ20 -250
JR20-250L	2X	167~250	CJ20 -250
JR20-400L	1Y	200~300	CJ20 -400
JR20-400L	2Y	267~400	CJ20 -400
JR20-630L	1Z	320~480	CJ20 -630
JR20-630L	2Z	420~630	CJ20 -630

Motion characteristic

MOTION CHARACTERISTIC:THREE-PHASE BALANCE MOTION TIME

No	Times the setting current	Motion time			Start conidition	Ambient temperature
1	1.05	>2h			cold state	20±5℃
2	1.2	<2h			heat state (Following the No.1 test)
3	1.5	<4min
4	7.2	10A	2s<Tp≤10s	≤63A	cold state
		10	4s<Tp≤10s	>63A

PHASE-LOSING MOTION CHARACTERISTIC

No	Times the setting current		Motion time	Start condition	Ambient temperature
	Any two phase	Another phase
1	1.0	0.9	>2h	cold state	20±5℃
2	1.15	0	<2h	heat state (Following the No.1 test)

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