SYR water level limiter DN20 with interlock
The water level limiter 933.1 is used for the protection of boilers in hot-water systems against dry-heating resulting from insufficient water level...
All product informationThe water level limiter 933.1 is used for the protection of boilers in hot-water systems against dry-heating resulting from insufficient water level. The installation of such a device is mandatory for closed heating systems from 300 kW and more.
The electric switch is rotatable and can be exchanged without draining the installation. It is equipped with an interlock. A test of the switch unit is possible without lowering the water level. The housing is galvanised, the switch unit body is made of synthetic material.
It is approved for closed heating systems acc. to DIN 4751 and VDE with component testing.
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| OEG no. | 512209905 |
| Housing: | Grey cast iron 25 |
| Mounting type: | Vertical |
| Nominal size: | DN20 |
| Voltage [V]: | 250 V ~ |
| Protection type [IP]: | 65 |
| Ambient temperature [°C]: | 70 |
| Switch contact: | Changeover |
| Cable length: | 2.5 |
| Operating temperature [°C]: | 120 |
| Pressure max. [bar]: | 10 |
| EAN | 4017905006477 |
| Weight [kg] | 3.32 |
| Customs tariff number | 90261029 |