Circuit Breaker Testing Equipment

Circuit Breaker Timing Analyzer

CT 3500 S2

The CT-3500 S2 is Vanguard’s second generation, standalone, digital, microprocessorcontrolled, circuit-breaker timer. It measures the elapsed time from the instant a breaker coil is energized to the instant of opening or closing of a circuit-breaker’s dry contacts. In addition to timing a breaker’s contact response time, the CT-3500 S2 can also time relays or other switching functions that use an initiating trigger voltage (30-300 Volts DC or AC).

The timer-triggering voltage starts three independent electronic timers. Each timer is individually stopped by its respective dry-contact closing or opening. The CT3500 can fully analyze the timing of all circuit breaker operations (Open, Close, Open – Close, and Close – Open). Timing results are displayed in milli-seconds and cycles on the unit’s back-lit LCD screen and can be printed on the built-in 2.5-inch wide thermal printer.

Circuit Breaker analyzer with DCRM

CT 8000 S3

The CT-8000 S3 is Vanguard’s fourth generation EHV circuit breaker analyzer. The CT-8000 S3 is available with 3 or 6 contact timing channels (part number
9103-UC and 9104-UC, respectively). The CT-8000 S3 can fully analyze a circuit breaker’s performance by measuring the main contact and resistor contact time, stroke, velocity, over-travel, bounce back and contact wipes. Also, an outstanding feature of the CT-8000 S3 is the ability to perform dynamic resistance tests on circuit breaker contacts.

Registered Office

114 , 24 – B Raja Bahadur Mansion 2,
Ambalal Doshi Marg, Fort,
Mumbai 400023, Maharashtra

Corporate Office

201,2nd Floor, Sahayog Complex,
Near Delux Crossroads, Nizampura,
Vadodara 390002, Gujarat


Tel: 0265 – 2575343-350