Features:

1. 3 phase unbalance protection device.
2. Overload protection, power failure protection and motor protection of thermal overload relay.
3. There is a stretching spring flip jumping mechanism to ensure that the contact action is rapid and reliable.
4. A flame-retardant housing can fully protect the relay from damage, wear resistance and high temperature resistance. JR36 thermal overload relay also has flame-retardant shell.
5. Thermal overload relay with CE certification.

Model			ATO-JR28-25	ATO-JR28-36	ATO-JR28-93
Rated Current			0.1-25A	17-40A	37-93A
Rated Insulation Voltage			690V	690V	690V
Open-phase Protection			yes	yes	yes
Automatic & Manual Reset			yes	yes	yes
Temperature Compensation			yes	yes	yes
Tripping Indicator			yes	yes	yes
Test Pushbutton			yes	yes	yes
Stop Button			yes	yes	yes
Mounting Mode			plug-in	plug-in	plug-in
Auxiliary Contact			1NO + 1NC	1NO + 1NC	1NO + 1NC
Rated Operating Current		220V	2.73A	2.73A	2.73A
		380V	1.58A	1.58A	1.58A
Traverse Cross-sectional Area	Major Loop	Single Core or Stranded Wire	1~4	6~10	6~35
		Connection Screw	M4	M4	M4
	Auxiliary Loop	Single Core or Stranded Wire	2*(0.5-1)	2*(0.5-1)	2*(0.5-1)
		Connection Screw	M3.5	M3.5	M3.5

Tips: What is JR28 3 phase Thermal Overload Relay?

JR28 thermal overload relay is also called thermal relay, which is a 3 phase overload relay, using the principle of current thermal effect, using electrical thermosensitive bimetal as sensitive components. The electrical thermosensitive bimetal sheet is heated and rolled by two alloys with a large difference in linear expansion coefficient. When heated, the bimetallic sheet bends from the high expansion layer to the low expansion layer. When the current is too large, the element will act due to heating.

JR28 3 phase thermal overload relays are used for AC motor overload protection, and there are many types. 3-phase thermal overload relay is easy to install and use, has complete functions and low price. Practice has proved that thermal overload relays can reliably protect AC motors, so they have been widely used for a long time.