Safety thermal breaker STB 89.00
Safety thermal breaker STB 89.00
An electromechanical safety thermal breaker (STB) with a capillary sensor, compliant with DIN EN 14597 and EN 60730-1/2-9.
Application
Features
Technical data
Downloads
The safety thermal breaker is used for temperature monitoring. When the temperature exceeds a preset safe level, the STB trips to cut off the electrical power supply. The STB is used in heat generating units with a maximum temperature of 350°C.
- Single-pole on/off or changeover microswitch
- Fail-safe design; an expansion fluid loss triggers contact C-1 to break
- Manually reset when the sensor element cools down by 10 K or more
- Sensor element time factor exceeds DIN EN 14597
- Temperature-compensated switching head
- Operation type: 2.BHKLP (EN 60730)
- RoHS compliant
- DIN CERTCO registration number: TR1107
- Customisable on special request
| Model | STB 89.00 | ||
|---|---|---|---|
| Endurance class | 1000 operations | ||
| Rated current/voltage at 250 V AC | C-1 | C-2 | |
| 16 (3,5) A | 4 (0,6) A | ||
| Electric shock protection | For integration in Class I equipment | ||
| Ingress protection rating | IP00 (EN 60529) | ||
| Overvoltage category | II | ||
| Trip temperature | Fixed | 60°C - 350°C* | |
| Adjustable | 110°C - 85°C* | ||
| Max. sensor temperature | Toff + 25 K | ||
| Switching head ambient temperature | max. 85°C | ||
| Storage and transport temperature | -25°...+60°C | ||
| Capillary tube/sensor material | Copper / stainless steel | ||
| Capillary tube length | 500 - 3500 mm | ||
| Connection and earth terminals | Tab A6,3x0,8 (DIN 46244) | ||
* On customer’s request, consult the manufacturer.
