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Circuit Breaker Terms & Definitions
Dynamic quick reference of over 150 circuit breaker terms and acronyms.
Contact Resistance DB
Compare contact-resistance to real world values submitted by TestGuy members.
Digitrip GF Pickups
Find expected Ground Fault pickup values for most Cutler-Hammer/Westinghouse Digitrip RMS trip units.
Low-Voltage Circuit Breaker Test
Electronic form for testing low-voltage power circuit breakers in accordance with NETA standards.
MVA Calculator
Find MVA rating of a circuit breaker using nameplate ratings.
Trip Unit TCC Calculator
Generate test currents and generic trip times for LSIG trip units, includes tolerance for pickup and time values.
Vacuum Circuit Breaker Test
Electronic form for testing medium-voltage vacuum circuit breakers in accordance with NETA standards.

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