3. Push Buttons
Reset Button
• The reset button is for resetting the light indicators (l> or l>>) after an overcurrent
tripping has occured.
• To reset, press the reset button once.
Test Button
• Test button is for checking the relay operation.
• Push on the test button to simulate an overcurrent low-set and high-set trip condition.
4. Trip Contacts
There is one set of tripping contacts namely, R1.
R 1
-
Manual Reset Type
• This contact (R1) is activated during an overcurrent trip. the contacts remain
activated regardless of the removal of fault current. This relay can only be reset
by pressing the “RESET” button.
5. Electrical Specification
Auxiliary Supply
MK203A-240A......................198~265 VAC
MK203A-110A......................94~127 VAC
Supply frequency..................50Hz
VA rating...............................3 VA typical
Trip Contact
Rated Voltage.......................250 VAC
Continuous carry..................5A (cos
ϕ
= 1.0)
Expected electrical life.........100,000 operations
Expected mechanical life......5 million operations
6. Mechanical
Indicators
Auxiliary supply.....................Green LED indicator
Pick-up..................................Red LED indicator
Trip........................................Red LED indicator
Mounting...............................Panel mounting
Front panel...........................Standard DIN 96x96 mm
Approximate weight..............0.7 kg
Setting Ranges
Low-set (I>)...........................2.0A to 6.0A
40% to 120%
Time multiplier(TM................0.05 to 1.0
High-set(I>>)........................I> to 10 I> or disable
High-set delay time (t>>)......instantaneous
