EBS1TR Thermal Relay


EBS1TR Series overload relays apply to the circuit of AC 50Hz or 60Hz, rated voltage to below 660V and rated current 0.1A~93A for AC motor overload and single phase protection during a long time or intermittent long time service, which can also protect against three-phase serious imbalance and long starting time of motor or long time operation. It can also be used for corresponding AC contactors for electromagnetic starters.

This product has an innovative, elegant appearance and a small installation area, with functions such as temperature compensation, action indication, automatic and manual reset, and stop with steady and reliable performance. Thermal relays can be combined/connected with a contactor or installed separately.

Standard: IEC 60947-4-1.


1.Technical Data







Standard IEC60947-4-1 IEC60947-4-1 IEC60947-4-1
Rated working current (Ie) A 25 36 93
Rated insulating voltage (Ui) V 660 660 660
Phase failure protection function
Automatic & manual reset
Temperature compensation
Releasing indicator
Test & stop pushbutton
Auxiliary contacts
Rated current AC-15 230V A 2.73 2.73 2.73
AC-15 380V A 1.58 1.58 1.58
DC-13 230V A 0.2 0.2 0.2
Ambient air temperature ℃ -5~+40 -5~+40 -5~+40
Altitude max. meter 2000 2000 2000
Pollution grade 3 3 3
Installation category 3 3 3
Mounting type Independent


2.Action Characteristics
Overload protecion

Item No. Setting current multiple Action time Start condition Ambient air temperature(℃)
1 1.05 ≥2h Cold state start  


20 ± 5

2 1.2 <2h After test item 1
3 1.5 <2min After test item 1
4 7.2 2s<Tp ≤10s Cold state start


3.Phase failure protection

Item No. Setting current multiple  

Action time


Start condition


Ambient air temperature(℃)

Any two phase The third phase
5 1.0 0.9 ≥2h Cold state start  

20 ± 5

6 1.15 0 <2h After test item 5


EBS1TR Thermal Relay dimension

12 MB
Thermal Overload Relay EBS1TR-CE Certificate
Thermal Overload Relay EBS1TR-ROHS Certificate
1 MB

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