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SIEMENS 3RU11 THERMAL OVERLOAD RELAYS
SIEMENS 3RU11 Thermal Overload Relays with screw-type terminals for mounting onto contactor. (image illustrative only, device may differ from image)
Siemens thermal overload relays are designed to disconnect an appliance(e.g. motors & generators) from its power supply where otherwise damage would occur due to impermissible load conditions.
3RU11 Thermal Overload Relays are suitable for the protection of three-phase and single-phase AC and DC motors, if single-phase AC or DC loads are to be protected all three bimetal strips must be heated and all the current paths of the relay must be connected in series.
Find the table below as guidance to your requirements.
- Auxiliary contacts: 1 NO = 1 NC
- Manual/Automatic RESET
- Switching position indication
- TEST function
- STOP button
- Phase failure sensitivity
- Integrated sealable cover
- CLASS 10