JR28 Series Thermal Relay

JR28 series thermal overload relay (hereinafter referred to as thermal relay) is suitable for overload and open phase protection of AC motor with AC 50 Hz / 60 Hz, voltage to 690 V and current of 0.1-630A for long or intermittent operation.
The thermal relay also has the functions of temperature compensation, action indication, automatic manual reset, stop and so on. The product performance is stable and reliable.
The thermal relay meets the requirements of GB 14048.4, GB 14048.5, IEC 60947-4-1, etc.
The thermal relay can be connected with the contactor or installed independently

  • Description
  • Inquiry

1. Normal working condition

  • Altitude: no more than 2000m.
  • The ambient air temperature is – 50c – + 40 鈩, and the average temperature within 24h shall not exceed + 35 鈩.
  • Atmospheric conditions: at + 40鈩 The average minimum temperature of the wettest month is not more than + 25鈩, and the average maximum relative humidity of the month is not more than 90%, and the condensation on products due to temperature change is considered.
  • The pollution level is 3.
  • The inclination between the mounting surface and the vertical surface shall not exceed 5 degree.
  • In the medium without explosion hazard, and there is no gas and conductive dust that can corrode metal and destroy insulation.
  • In places with rain proof equipment and not full of water vapor.
  • There is no significant shaking, shock or vibration.

2. Motion Characteristic: Three-phase Balance Motion Time

NoTimes of the setting currentMotion timeStart conditionAmbient temperature
11.05>2hCold state20卤5oC
21.2<2hHeat state(Following the No.1 test)
31.5<4min
47.210A2s< Tp鈮10s鈮63ACold state
104s< Tp鈮10s>63A



3. Phase-losing Motion Characteristic

NoTimes of the setting currentMotion timeStart conditionAmbienttemperature
Any two phasesAnother phase
11.00.9>2hCold state20卤5oC
21.150<2hHeat state(Following the No.1 test)



4. Specification

TypeNumberSetting range (A)For contactor
JR28-2513010.1~0.16CJX2-09~32
13020.16~0.25CJX2-09~32
13030.25~0.4CJX2-09~32
13040.4~0.63CJX2-09~32
13050.63~1CJX2-09~32
13061~1.6CJX2-09~32
13071.6~2.5CJX2-09~32
13082.5~4CJX2-09~32
13104~6CJX2-09~32
13125.5~8CJX2-09~32
13147~10CJX2-09~32
13169~13CJX2-09~32
132112~18CJX2-09~32
132217~25CJX2-32
JR28-36235323~32CJX2-09~32
235530~40CJX2-09~32
JR28-93332217~25CJX2-09~32
335323~32CJX2-09~32
335530~40CJX2-09~32
335737~50CJX2-09~32
335948~65CJX2-09~32
336155~70CJX2-09~32
336363~80CJX2-09~32
336580~93CJX2-95
JR28-150436580~104CJX2-95
436795~120CJX2-95~115
4369110~140CJX2-115

 

TypeNumberSetting range (A)For contactor
JR28-150536990~150CJX2-150
JR28-200F535730~50CJX2-F115~F185
F536348~80CJX2-F115~F185
F536760~100CJX2-F115~F185
F536990~150CJX2-F115~F185
JR28-630F5371132~220CJX2-F225~F265
F7375200~330CJX2-F225~F500
F7379300~500CJX2-F225~F500
F7381380~630CJX2-F400~F630

5.JR28 Series Thermal Relay Overall and Mounting Dimensions

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