Teridian semiconductor corp. Has launched the 71m6403 electronic trip unit for industrial motor-circuit-protection and circuit-breaker applications. The ic 71m6403 provides reliable start-up, preventing damage to the motor and increasing the useful life of the motor. The device can also be used in air, moulded-case and insulated circuit breakers in factories, utilities and commercial buildings. This programmable device can be tuned according to voltage, current, rate of voltage increase and rate of current increase. It can trip instantaneously on threshold events within less than 7 ms from power-`on,` or can be set to trip on delay, based on user-determined current and voltage profiles.
