Trip Unit Features and Settings Ranges

  • Each ETC-12 comes equipped with all protection bands which can be defeated if not needed.
  • The ETC-12 is available for all breaker frame sizes and current sensor primary ratings without the need for ratings plugs.
  • The ETC-12 can work with current sensors that have either a 1A or 200mA secondary rating. The unit auto detects the current sensor secondary rating based on the harness that is supplied with the particular sensors.
  • The ETC-12 is both electrically and mechanically backwards compatible with all older generation etc-11, etc-11r and etc-11d trip units.
  • The ETC-12 can be secondary injection tested using the original etc-PTS test set provided it is equipped with the PTS Adapter module.
  • The time-current characteristics of any manufacturer’s solid state trip unit or electromechanical overload can be replicated with the ETC-12. The following settings ranges are available:
Function Pick Up Range Delay Range Notes
Available current sensor tap ratings N/A N/A 40A, 70A, 80A, 100A, 120A, 150A, 200, 225, 300, 400, 600, 800A, 1000A, 1200A, 1600A, 2000A, 2400A, 2500A, 3000A, 3200A, 4000A, 4200A, 5000A, 6000A
Long-time (overload) protection From 25% to 110% of the current sensor tap rating MIN (5 sec), INT (13 sec), MAX (27 sec) or custom value between 1 and 30 seconds. Delay is reverse I2t and defined by time to trip at 600% of the long-time pickup value
Short-time protection From 150% to 1000% of the long-time pickup value. Selectable constant or reverse I2t ramp with delays of .070, .100, .150, .200, .300, .400, .500, or .600 seconds. Function can be defeated provided that the Instantaneous protection band is enabled.Delay can be selected either as a fixed delay or reverse I2t.
Instantaneous protection From 150 to 1200% of the long-time pickup value. Trips breaker in less than .050 seconds. Function can be defeated provided that Short-time protection is enabled.
Ground Fault protection From 10% to 200% of the sensor tap rating, provided that this value does not exceed 1200A. Increments are of 5% of the sensor tap rating up to 100% of tap rating. Above 100% of tap rating, increments are in 10% of tap rating. Selectable constant or reverse I2t ramp with delays of .100, .150, .200, .300, .400 or .500 seconds. Function can be defeated.Delay can be selected either as a fixed delay or reverse I2t.
Phase Imbalance protection. From 15% to 50% ratio of minimum /maximum phase current. Between 1 and 90 seconds Function can be defeated.
flashSAFE Instantaneous Pickup Same as Instantaneous Trips breaker in less than .050 seconds. May be defeated. Must be lower than the previously entered instantaneous pickup. May be enabled even if instantaneous is defeated.
flashSAFE Ground fault pickup. Same as Ground Fault Fixed at .100 seconds w/ no I2t ramp May be defeated. Must be lower than the previously entered ground fault pickup. May be enabled even if ground fault is defeated
Long-time thermal memory ON or OFF N/A
Ground-fault thermal memory ON or OFF N/A