• drop-in retrofit capability to the multi-amp model cb-9116, model db-8130 and model cb-8160 circuit breaker test sets
• digital signal processing (dsp) technology
• variable pulse time and firing-angle output-current control
• complies with nema ab-4 test guidelines

the dda-16, dda-30, dda-60 use the latest in dsp technology to control the circuit breaker test sets and also measure the reactions of the breaker under test. the retrofit capabilities allow a user of multi-amp circuit breaker tests sets the capability of upgrading existing systems without the expense of purchasing a new system. the dsp technology provides complete digital control of the scrs and digitally samples the output current for high-accuracy measurements.