48049-137-05EN

Switch Settings Adjustment

NOTICE
HAZARD OF Equipment damage
  • Using the switches to set trip unit values will override settings made using the keypad.
  • Changing the switch setting for overload, short-time or instantaneous, or changing the neutral protection selector on a four-pole circuit breaker, will delete all fine adjustments previously made using the keypad for overload, short-time and instantaneous protection.
  • Changing the switch setting for ground-fault will delete all fine adjustments made with the keypad for ground-fault protection.
  • If cover pin located on back of the protective cover is missing, contact sales office for a replacement cover.
Failure to follow these instructions can result in equipment damage.
  1. Open switch cover (A).

  2. Confirm that cover pin (B) is on back of the protective cover. This pin is necessary to lock trip unit settings when they are set to trip.

  3. Adjust the appropriate switches (C) to desired values. Display screen (D) automatically shows appropriate setting curve (E). The set value is displayed as a boxed value in amperes or seconds.

  4. Make fine adjustments using navigation keys (F) or network system management software. All fine adjustments are stored in non-volatile memory.

    NOTE: Fine adjustments can only be made for values less than those set with the switches. Using switches to set values after making fine adjustments using the keypad will override the keypad adjustments.

    Fine switch settings are in the following increments:

    Long-time pickup = 1 A

    Long-time delay = 0.5 sec.

    Short-time pickup = 10 A

    Short-time delay = 0.1 sec.

    Instantaneous pickup = 10 A

    Ground-fault pickup = 1 A

    Ground-fault delay = 0.1 sec.

    Adjust Switch Settings

  5. Replace switch cover. Use a lead seal (A), not supplied, to provide tamper evidence if necessary.

    NOTE: When the cover is closed, the navigation keys can no longer be used to make adjustments to the trip unit settings if they are set to trip.
  6. Check settings using keypad (B) and graphic display or the network system management software.

    Check Switch Settings

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