Product Description
The Mitsubishi Electric TH-T18 is a 3-pole thermal overload protection relay (TOR) belonging to the TH-T series, T18 frame size. It is designed for motor overload and locked-rotor protection in industrial applications and is compatible with Mitsubishi S-T and SD-T series electromagnetic contactors. The relay features adjustable trip current settings, screw-clamp terminals with finger protection, and a built-in ambient temperature compensator for consistent performance across varying environmental conditions.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Mitsubishi Electric |
| Model / Part Number | TH-T18 |
| Product Type | Thermal Overload Relay (TOR) |
| Series / Family | TH-T Series |
| Frame Size | T18 |
| Number of Poles | 3 (3P) |
| Auxiliary Contacts | 1NO + 1NC |
| Rated Insulation Voltage (UI) | 690V AC |
| Rated Operational Voltage (UE) | 550V AC |
| Application Voltage | 220–240V / 380–440V (3-phase) |
| Frequency Range | 0 (DC) to 400 Hz |
| Trip Class | Class 10A |
| Current Setting Range | Adjustable — varies by heater suffix (0.12A to 8A+ available) |
| Connection Type | Screw-clamp with finger protection |
| Reset Method | Manual / Automatic (selectable) |
| Ambient Temperature Compensator | Built-in |
| Operating Temperature | -10°C to +40°C |
| Compatible Contactors | S-T10, S-T12, S-T20, SD-T12, SD-T20 |
| Single Unit Mounting Accessory | UT-HZ18 (IEC 35mm DIN rail or screw mount) |
| Terminal Cover | Standard equipment (included) |
| Compliance Standards | JIS C8201-4-1, IEC/EN 60947-4-1 |
| Weight (approx.) | 110–130 g (varies by heater rating) |
We warranty all items for 30 days from date of purchase.
Other Details
We warranty all items for 30 days from date of purchase. If you experience any issues with your item within this period, please contact us and we will work with you to resolve the problem. This warranty covers defects in functionality but does not cover damage caused by misuse, improper installation, or normal wear and tear.Product Videos
Custom Field
GTIN 679523686208
Manufacturer Mitsubishi
Part Number TH-T18
Shelf C-6
Model TH-T18
MPN TH-T18
Type Overload Relay
