Contact Resistance Tester

Contact Resistance Tester is a device used to measure the resistance in electrical contacts, such as those found in switches, relays, connectors, and circuit breakers. This tester applies a known current to the contacts and measures the voltage drop across them to determine the resistance. It helps ensure that electrical connections are secure and have low resistance, which is crucial for maintaining proper electrical conductivity and preventing overheating or voltage drop issues.

Contact resistance tester TEHL Series outputs DC 600A/400A/200A/100A current to test the contact resistance of circuit breaker or high current cable contacts. It is designed according to IEC62271. The main application of the tester is the measurement of circuit breaker contact resistance.