Crouzet has been involved in the nuclear industry for 35 years, and offers a range of special limit switches. Classifi ed as Electrical Safety Systems, these products are certifi ed in accordance with the RCCE regulations (rules regarding the design and construction of electrical equipment for nuclear islands).

The limit switches comprise a hermetically sealed cell (83151) which combines a snap-action switching system, and a high degree of resistance to shocks and vibration. The hermetically sealed cell fi lled with an inert gas (hydrogenated nitrogen) protects the contacts and allows the limit switches to be used in low level circuits and also at higher currents.

This technology enables Crouzet limit switches to be approved for severe environments inside and outside the reactor containment and to meet the requirements of the associated specifi c tests: Thermal ageing, relative humidity, seismic tests irradiation ageing tests (K2), irradiation accident tests (K1), resistance tests to thermodynamic and chemical accident conditions (K1).

	K1	K2	K3
SP 4522
SP 4813
SP 4863
83151