Multispan WTR-35 Winding Temperature Relay (Thermistor Relay)
- Brand
- Multispan
- Model number
- WTR-35
- Category
- Motor Protection Relays
DIN-rail thermistor relay that trips a motor when its PTC winding sensors detect overheating, with fault LEDs and one relay with two changeover contacts. 50-550 V AC supply.
Price and availability on request
Key features
- Safety device for Electrical Motor in Industry
- Trip based on overheating sense in Motor Winding
- PTC Temperature Input
- 1 Relay 2 C/O,5A, 230V AC
- Front LED indication for Fault Identification
- Size: 90 X 35 X 61.5 (H XW X D) mm
- Supply Voltage : 50-550V AC
Specifications
| Auxiliary Supply | 50 To 550V AC; 50/60Hz |
|---|---|
| Output contact | 1Relay 2 CO |
| contact rating(resistive) | 5 Amp 230V AC (resistive) |
| Input | PTC Thermistor |
| Sensor Short | 0-39 ohm |
|---|---|
| Sensor Healthy | 40 ohm - 4K ohm |
| Sensor Trip | 4.1K ohm - 5.5K ohm |
| Sensor Open | 5.6K ohm & Above |
| Sensor Cut in | 1.5K ohm - 1.8K ohm |
| Temperature range for Thermistor | 70°C to 180°C ( for PTC) |
| Trip time delay | Less than 1 sec. |
| Resetting | Auto / Manual(Remote) |
| Mode of operation | Fail safe / Non-fail safe |
| Power on | LED |
|---|---|
| Sensor Short | LED |
| Sensor Healthy | LED |
| Sensor Trip | LED |
| Sensor Open | Sensor Short, Healthy & Trip LED blink |
| Enclosure | ABS / PC ABS |
|---|---|
| Dimensions (mm) | 90(H) X 35(W) X 60(D) |
| Mounting | 35 mm Din Rail Mounting |
| Operating temperature | -5°C to +60°C |
|---|---|
| Humidity | Up to 95% Rh |
| Typical uses | Transformer winding protection, Motor winding protection, Generator winding protection |
|---|
| WTR-35-E2-00 | Voltage Input PTC Sensor; Output 1R 1C/O; Supply 50V-520V AC |
|---|
Specifications are from the manufacturer's published information. Confirm critical values with us or the datasheet before ordering.
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