Cement Coated Resistors

Cemented power resistors are provided with a layer of cement which provides mechanical protection and increases the nominal capacity in comparison to unprotected resistors. The curing process achieves an inorganic state, so that the cement is resistant to most solvents, fungal attack and even termites. On request, the resistors can also be supplied with silicone cement, which offers advantages in case of climatic stress (e.g. humidity).

Special features and options

• Good mechanical protection in particular with regard to the high ohm models
• High thermal shock resistance
• Low temperature coefficient
• Optional low induction model available

Field of application:

• Pre-charge resistor in traction applications