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EKR2 Thermal Overload Relay

EKR2 Thermal Overload Relay
Technical Data

Description

Electric value AC50/60Hz, 690V, 0.1A~630A
Tripping class 10A
Mounting version Plug-in: Available for CR2-13,23,33

Type Designation 

Feature

3-phase bimetal
Continuously readjustable current settings
Temperature compensation
Tripping indicator
Test button
Stop button
Manual and automatic reset button
Electrically separated 1N/O plus 1N/C contact

Technical Specification

Protection property 

Item Series No. I/In Operating time Tp Test condition
Overload
protection
1 1.05 >2 h Start from cold status
2 1.2 ≤2h Start from heat status,
right after item No.1
3 1.5 ≤2min Start from heat status,
right after item No.1
4 7.2 2s<Tp≤10s Start from cold status
Phase failure
protection
5 Any two phases Another phases >2 h Start from cold status
1 0.9
6 1.15 0 ≤2 h Start from heat status,
right after item No.5

 Curve

Main Technical Data

Phase failure protection function Yes
Automatic & manual reset Yes
Temperature compensation Yes
Tripping indicator Yes
Test & stop pushbutton Yes
Mounting mode Plug-in Yes
Independent Yes
No. of contacts 1N/O+1N/C
Auxiliary contacts Rated current (A) (AC-15 220V) 2.73
Rated current (A) (AC-15 380V) 1.58
Rated current (A) (DC-13 220V) 0.2

Assembly with contactor

Model of
overload relay
Code Rated current (A) Recommended fuse type
(Recommended  RT16)
Contactor Matched
aM gG
EKR2-13 1301 0.1~0.16 0.25 2 EKC1-09
EKC1-12
EKC1-18
EKC1-25
EKC1-32
1302 0.16~0.25 0.5 2
1303 0.25~0.4 1 2
1304 0.4~0.63 1 2
1305 0.63~1 2 4
1306 1~1.6 2 4
1307 1.6~2.5 4 6
1308 2.5~4 6 10
1310 4~6 8 16
1312 5.5~8 12 20
1314 7~10 12 20
1316 9~13 16 25
1321 12~18 20 35
1322 17~25 25 50
EKR2-23 2353 23~32 40 63 EKC1-32
2355 30~40 40 80
EKR2-33 3353 23~32 40 63 EKC1-40
EKC1-50
EKC1-65
EKC1-80
EKC1-95
3355 30~40 40 100
3357 37~50 63 100
3359 48~65 63 100
3361 55~70 80 125
3363 63~80 80 125
3365 80~93 100 160

 Overall and Mounting Dimension(mm)

Wiring

Items EKR2-13 EKR2-23 EKR2-33
Cross section area of conductor mm2 Main circuit Single core or stranded wire 1~4 4~10 4~35
Wiring screw M4 M4 M10
Auxiliary circuit Single core or stranded wire 0.5~2.5 0.5~2.5 0.5~2.5
Wiring screw M3.5 M3.5 M3.5

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