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What is trip class?
- Réponse Trip class is the expression used in connection with the designation and current settings of overload relays and soft starters. The most popular are 10A and 10 trip classes. They are suitable for light/standard duty applications. Trip class corresponding to minimum overload current withstand time. For example: Class 10A = overload ratio 8 (8 times nominal current) for 1.6 seconds; Class 10 = overload ratio 8 for 3 seconds.
Does a thermal overload relay provide full protection of the motor?
- Réponse A thermal overload relay equipped with bimetals is a relatively small, yet reliable appliance to protect electrical motors against: –mechanical overload, –asymmetrical operation, –phase failure. To provide protection against short circuit current you should use fuses. For full protection of the motor, we recommend CTI circuit breakers.