HOME | ABOUT TAIXI | NEWS | FAQ | SERVICE | CONTACT US
China Circuit Breaker Manufacturers and Suppliers
Solar Disconnect Switch Circuit Breaker Socket & Plug Cable Accessories Others
HOME | ABOUT TAIXI | NEWS | FAQ | SERVICE | CONTACT US
China Circuit Breaker Manufacturers and Suppliers
Solar Disconnect Switch
Circuit Breaker
Miniature Circuit Breaker | MCB Residual Current Circuit Breaker | RCCB-RCBO Surge Protection Device | SPD Transfer Switch Breaker Box Isolation Switch Contactor Power Supply
Socket & Plug
Cable Accessories
Others
TAIXI WEBSITES

JR20 Thermal Overload Relay

Others

  • Parameters

  • Details

  • Size&weight

  • Related

  • Video

  • Message

Product Overview

JR20 Thermal Overload Relay are suitable for circuits with AC 50Hz, voltages up to 660V, and currents up to 630A, to protect against overload, phase failure and three phase unbalance of AC motor. With phase-failure protection, temperature compensation, manual or auto reset, action tripping flexibility check, action tripping indication, disconnection check button and other functions. Products meet the GB14048.4.

Model and Meaning

Normal working conditions and installation conditions

Ambient temperature: The average value does not exceed +35°C in 24 hours.
Altitude: no more than 2000m.
Atmospheric conditions: The relative humidity does not exceed 50% at +40°C, and higher relative humidity may be allowed at lower temperatures. For example, 90% at 20°C, special measures should be taken for the occasional condensation due to temperature changes.
Pollution level: 3 levels.
Installation category: Class III.
Installation conditions: The inclination of the installation face and the vertical is not more than ±5°.
In addition to mounting screws, the relay can also use 35mm standard rail.
Shock vibration: The relay should be installed and used in places where there is no significant shaking, shock and vibration.
Transportation, Storage: The relay should not be subject to severe impact and vibration during transportation, and it must not be affected by rain or snow in transportation and storage. Relays are suitable for transport and storage at -25°C ~ +55°C, and at +70°C for short periods (in 24h).

Structural Feature

Internal structure: Insert combination or independent structure; three-dimensional structure, pull spring blade jump action mechanism; with phase failure and temperature compensation structure
Installation operation: with action tripping flexibility inspection, action tripping indication and disconnection inspection and other functions; optional manual reset and automatic reset; normally closed and normally open auxiliary contacts insulated and separated
Model Rated insulation voltage Ui (V) Thermoelement Rated current range (A) Corresponding AC contactor
JR20-10 660 1R 0.1~0.13~0.15 CJ20-10
2R 0.15~0.19~0.23
3R 0.23~0.29~0.35
4R 0.35~0.44~0.53
5R 0.53~0.67~0.8
6R 0.8~1~1.2
7R 1.2~1.5~1.8
8R 1.8~2.2~2.6
9R 2.6~3.2~3.8
10R 3.2~4~4.8
11R 4~5~6
12R 5~6~7
13R 6~7.2~8.4
14R 7~8.6~10
15R 8.6~10~11.6
JR20-16 1S 3.6~4.5~5.4 CJ20-16
2S 5.4~6.7~8
3S 8~10~12
4S 10~12~14
5S 12~14~16
6S 14~16~18
JR20-25 1T 7.8~9.7~11.6 CJ20-25
2T 11.6~14.3~17
3T 17~21~25
4T 21~25~29
JR20-63 1U 16~20~24 CJ20-40
CJ20-63
2U 24~30~36
3U 32~40~47
4U 40~47~55
5U 47~55~62
6U 55~63~71
JR20-160 1W 33~40~47 CJ20-100
CJ20-160
2W 47~55~63
3W 63~74~84
4W 74~86~98
5W 85~100~115
6W 100~115~130
7W 115~132~150
8W 130~150~170
9W 144~160~176
JR20-250 1X 130~150~170 CJ20-250
2X 167~200~250
JR20-400 1Y 200~250~300 CJ20-400
2Y 267~335~400
JR20-630 1Z 320~400~480 CJ20-630
2Z 420~525~630
Note: The 10R and below specification in JR20-10 does not include a phase failure protection device.

Basic parameters of auxiliary circuit

Utilization Category Rated frequency Rated insulation voltage (Ui) Rated operational voltage (Ue) Rated operational current (Ie) Conventional thermal current Auxiliary contact
AC-15 50Hz 380V 127V 2.83A 6A NC 95-96
220V 1.64A  
380V 0.95A  
220V 0.82A 6A NO 97-98
380V 0.47A  

Operation characteristics

No. Setting current multiples Action time Initial condition
Operation characteristics when negative each phase is balanced
1 1.05 No action in 2h Cold
2 1.2 Action in 2h Thermal (after No. 1 test)
3 1.5 ＜2min ＜4min Thermal (after No. 1 test)
4 7.2 2s＜Tp≤10s 4s＜Tp≤10s Cold
5 1.0 No action in 2h Cold
6 1.2 Action in 2h Thermal (after No. 5 test)
7 1.05 No action in 2h Cold
8 1.3 Action in 2h Thermal (after No. 7 test)
Operation characteristics when negative each phase is unbalanced
  Any two phase Third phase  
1 1.10 0.9 No action in 2h Cold
2 1.15 0 Action in 2h Thermal (after No. 1 test)

Outline and lnstallation Dimension

1. Outline and lnstallation Dimension of JR20-10Z/JR20-16Z/JR20-25Z/JR20-63Z/JR20-160Z

2. Outline and lnstallation Dimension of JR20-10L/JR20-16L/JR20-25L/JR20-63L/JR20-160L

3. Outline and installation dimension of JR20-10GL/JR20-16GL/JR20-25GL/JR20-63GL/JR20-160GL

Thermal Relay A B C D E F G H K a M1 M2 φ
Model Feature
JR20-10 Z 44 77.5 101 57.8   10 4.5 13.9   32      
L 44 70 101 46   14 4.5 8.9   32 M5    
G 44 70 112 53   14   8.9     M5    
JR20-16 Z 44 78 101 71   14 4.5 12.9   32      
L 44 70 101 46   14 4.5 8.9   32 M5    
G 44 70 112 53   14   8.9 5.2   M5    
JR20-25 Z 47.5 82.5 117 66   20.5 4.5     32      
L 44 70 117 46   14   8.9 5.5 32 M5    
G 44 70 117 53   14 5.5 8.9 6.5   M5    
JR20-63 Z 64 90 117 82   20 5.5     46      
70 90 117 92   28 5.5     46      
L 65 80 117 62   23 5.5     46 M6    
65 80 117 62   23       46 M6    
G                          
                        7
JR20-160 Z 104 100 152 87.5 87.5 29       37 M6 M8 7
104 100 152 87.5 87.5 45       37 M6 M8  
L                          
                         

view and download

File name（Click to view）File typefile sizeView timesClick to download

Product related news

News titlePromulgatorRelease timeView timesClick to read