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Accessory for AC Magnetic Contactor
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Overload relays are devices that protect electric motors from overloads and phase failure. When the motor is overloaded, it detects this and terminates the power flow, preventing the motor from overheating and winding damage.
| Electric value | AC50/60Hz, 690V, 0.1A~630A |
| Tripping class | 10A |
| Mounting version | Plug-in: Available for EKR2-13,23,33 |
|
EK |
R |
2 |
13 |
10 |
|
Company code |
Thermal Overload Relay |
Design sequence Number |
Frame Size |
Code of current rating: Basic specification, expressed with the rated operational current (380V/400V, AC3) |
3-phase bimetal
Continuously adjustable current settings,
Temperature compensation
Tripping indicator
Test button, when motor needs emergency stops during operation, it is possible to stop the motor
by cutting off its contact from the magnetic contact with test button. In order to test the operation of thermal overload relay contacts, immediate testing is possible by pulling up test button which changes NO/NC contact.
Stop button, when motor needs emergency stops during operation, it is possible to stop the motor by cutting off its contact from the magnetic contact with stop button.
Manual and automatic reset button
Electrically separated 1N/O plus 1N/C contact
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 | 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 |
|
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 | |
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 | ||
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 | ||
| Reference No. | Specification |
| EKR2-1301 | Thermal Overload Relay Current 0.1-0.16A |
| EKR2-1302 | Thermal Overload Relay Current 0.16-0.25A |
| EKR2-1303 | Thermal Overload Relay Current 0.25-0.4A |
| EKR2-1304 | Thermal Overload Relay Current 0.4-0.63A |
| EKR2-1305 | Thermal Overload Relay Current 0.63-1A |
| EKR2-1306 | Thermal Overload Relay Current 1-1.6A |
| EKR2-1307 | Thermal Overload Relay Current 1.6-2.5A |
| EKR2-1308 | Thermal Overload Relay Current 2.5-4A |
| EKR2-1310 | Thermal Overload Relay Current 4-6A |
| EKR2-1312 | Thermal Overload Relay Current 5.5-8A |
| EKR2-1314 | Thermal Overload Relay Current 7-10A |
| EKR2-1316 | Thermal Overload Relay Current 9-13A |
| EKR2-1321 | Thermal Overload Relay Current 12-18A |
| EKR2-1322 | Thermal Overload Relay Current 17-25A |
| EKR2-2353 | Thermal Overload Relay Current 23-32A |
| EKR2-2355 | Thermal Overload Relay Current 30-40A |
| EKR2-3353 | Thermal Overload Relay Current 23-32A |
| EKR2-3355 | Thermal Overload Relay Current 30-40A |
| EKR2-3357 | Thermal Overload Relay Current 37-50A |
| EKR2-3359 | Thermal Overload Relay Current 48-65A |
| EKR2-3361 | Thermal Overload Relay Current 55-70A |
| EKR2-3363 | Thermal Overload Relay Current 63-80A |
| EKR2-3365 | Thermal Overload Relay Current 80-93A |
Overload relays are devices that protect electric motors from overloads and phase failure. When the motor is overloaded, it detects this and terminates the power flow, preventing the motor from overheating and winding damage.
| Electric value | AC50/60Hz, 690V, 0.1A~630A |
| Tripping class | 10A |
| Mounting version | Plug-in: Available for EKR2-13,23,33 |
|
EK |
R |
2 |
13 |
10 |
|
Company code |
Thermal Overload Relay |
Design sequence Number |
Frame Size |
Code of current rating: Basic specification, expressed with the rated operational current (380V/400V, AC3) |
3-phase bimetal
Continuously adjustable current settings,
Temperature compensation
Tripping indicator
Test button, when motor needs emergency stops during operation, it is possible to stop the motor
by cutting off its contact from the magnetic contact with test button. In order to test the operation of thermal overload relay contacts, immediate testing is possible by pulling up test button which changes NO/NC contact.
Stop button, when motor needs emergency stops during operation, it is possible to stop the motor by cutting off its contact from the magnetic contact with stop button.
Manual and automatic reset button
Electrically separated 1N/O plus 1N/C contact
