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What is the operating voltage tolerance, catalog numbers, and clearing times for the Masterpact NT and NW shunt trip and shunt close coils?

FA90006

23 January 2021

Issue:  
What is the operating voltage tolerance, catalog numbers, and clearing times for the Masterpact NT and NW shunt trip and shunt close coils?

Product Line:
Masterpact NT NW

Resolution:
Shunt trip:  operating threshold is 0.7x to 1.1x Vn (nominal voltage)
Shunt close:  operating threshold is 0.85x to 1.1x Vn
Catalog numbers are the same for MX and MN (shunt trip and shunt close) devices; function is determined by placement in the breaker.
 
Voltage (V) at 50/60 HzT-, W-, & Y-Frame FixedT-Frame DrawoutW- & Y-Frame Drawout
12 DCS47359S33809S48490
24-30 AC/DCS47360S33810S48491
48-60 AC/DCS47361S33811S48492
100-130 AC/DCS47362S33812S48493
200-240 AC/DCS47363S33813S48494
277 ACS47364S33814S48495
380-480 ACS47365S33815S48496

MX operating time at Vn:  50 ms ±10 (NW and NT)
XF operating time at Vn:  
70 ms ±10 (NW ≤ 4000 A)
80 ms ±10 (NW > 4000 A)
55 ms (NT)

NOTE:  Shunt trip (MX) and shunt close (XF) circuits must be energized for a minimum of 200 ms. In other words, don't use an impulse signal. Use a signal of at least 200ms.