Therm differential switch 247 for replacement of old systems
Therm differential switch with maximum part, for the detection of open fires with and without smoke.
It is used when operationally expected to encounter disturbing factors such as dust, smoke, or steam.
It must not be used for closures in escape and rescue routes in fixed installations.
Its special features are:
- optical status indication
- measuring part monitoring
- communication connection for RSBus
- potential-free opener
Therm differential switch with maximum part, for the detection of open fires with and without smoke.
It is used when operationally expected to encounter disturbing factors such as dust, smoke, or steam.
It must not be used for closures in escape and rescue routes in fixed installations.
Its special features are:
- optical status indication
- measuring part monitoring
- communication connection for RSBus
- potential-free opener
| Version: | according to EN 54, Part 5 |
| Fire detection: | according to temperature, class A1 |
| Maximum part: | 54°C to 65°C |
| Operating voltage: | 18 to 28 V DC |
| Current consumption at 28 V DC: | |
| Standby: | 22 mA |
| Alarm: | 11 mA |
| Fault: | 16 mA |
| Relay contact: | Opener |
| Switching voltage: | 30 V DC |
| Switching current: | 1 A |
| Switching power: | 30 W |
| Protection class: | IP 42 |
| Operating ambient temperature: | -20°C to +80°C |
| Color: | white, similar to RAL 9010 |
| Technical data | |
| Color | White |
| Protection class | IP42 |