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To ensure accuracy, please note that images may be representative. Refer to the product data sheet for detailed specifications.
| Manufacturer | ELKO |
| Manufacturer Product Number | TER-7 |
| Description | Monitoring Relay; Motor winding overtemperature; 24-240 VAC/DC; 2C DPDT; 8 A |
| Datasheet | Download Datasheet |
The ELKO TER-7 is a 17.6 mm monitoring relay with 2C DPDT output and rated 8 A, driven by a 24-240 VAC/DC input.
It watches for motor winding overtemperature, measuring resistance at terminals Ta-Tb, with sensor-break detection in PTC mode.
It senses through a PTC thermistor in the motor winding, or a bimetal (TK) sensor.
Reset is manual, by the front RESET button or a remote contact.
It has DIN Rail mounting.
| Category | |
| Manufacturer | ELKO |
| Monitoring Function | Motor winding overtemperature |
| Sensing Method | Resistance at terminals Ta-Tb, with sensor-break detection in PTC mode |
| Sensor Type | PTC thermistor in the motor winding, or a bimetal (TK) sensor |
| Input Voltage | 24-240 VAC/DC |
| Input Operating Range | -15 %; +10 % |
| Overvoltage Trip | Trips above 3.3 kOhm, resets below 1.8 kOhm (cold sensor 50 Ohm - 1.5 kOhm) |
| Setting Accuracy | ± 5 % |
| Repeatability | < 5 % |
| Reset Method | Manual, by the front RESET button or a remote contact |
| Status Indicator | blinking red LED on sensor fault |
| Contact Configuration | 2C DPDT |
| Output Rating | 8 A |
| Contact Material | AgNi |
| Pilot Duty | 1/2 HP 240 VAC; B300 |
| Mounting Type | DIN Rail |
| Module Width (mm) | 17.6 |
| Protection Category | IP40 front panel / IP20 terminals |
| Rated Power | 2.5 W |
| Operating Temperature (Storage) | -20 °C to 55 °C (-4 °F to 131 °F) (-30 °C to 70 °C (-22 °F to 158 °F)) |
| Mechanical Life | 30,000,000 ops. (100,000 ops.) |
| Approvals | EN 60255-1, EN 60255-26, EN 60255-27, IEC 60730-2-9 |