CT-3500 S2

Digital Circuit Breaker Analyzer

9002-UC [CT-3500 S2]

The CT-3500 S2 is Vanguard’s second generation, stand-alone, digital, microprocessor-controlled, 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 (24-300 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 CT-3500 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.

  • Detect Main & Insertion Resistor Contacts on same input
  • USB computer interface
  • USB Flash drive interface (Flash drive not included)
  • Store 128 test records internally
  • Initiate Breaker Operation
  • Built-in 2.5" wide Thermal Printer
  • Rugged "QWERTY" style membrane keypad

CT-3500 S2



CT-3500 S2

Technical Specifications

TYPE Portable circuit-breaker analyzer
PHYSICAL SPECIFICATIONS 16”W x 7”H x 13” D (40.6 cm x 17.4 cm x 33 cm); Weight: 14 lbs. (6.4 Kg)
INPUT POWER 100 - 240 Vac, 50/60 Hz
TRIGGER INPUT VOLTAGE open/close: 24 - 300 V, DC or peak AC
BREAKER OPERATIONS Open, Close, Open-Close, Close-Open
TIMING RESOLUTION ±0.1 millisecond; accuracy: 0.05% of reading ±0.1 ms
DISPLAY back-lit LCD screen (128 x 64 pixels); viewable in bright sunlight and low light conditions
KEYPAD rugged, 44-key "QWERTY" membrane keypad
PRINTER built-in 2.5-inch wide thermal printer
INTERNAL TEST RECORD STORAGE stores up to 128 timing records
COMPUTER INTERFACE one USB PC interface, one USB Flash drive interface
COMPUTER SOFTWARE Windows® based Breaker Analysis software included with purchase price
SAFETY designed to meet IEC61010 (1995), UL61010A-1, CSA-C22.2 standards
ENVIRONMENT Operating: -10°C to +50°C (+15°F to +122°F)
Storage: -30°C to +70°C (-22°F to +158°F)
HUMIDITY 90% RH @ 40°C (104°F) non-condensing
ALTITUDE 2,000 m (6,562 ft) to full safety specifications
CABLES furnished with full set of test leads (inluding 20-foot contact leads and 30-foot contact lead extensions)
OPTIONS transportation case
WARRANTY one year on parts and labor
Specifications are valid at nominal voltage and ambient temperature of +25˚C (+77˚F).