Issue: Â 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.
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Voltage (V) at 50/60 Hz | T-, W-, & Y-Frame Fixed | T-Frame Drawout | W- & Y-Frame Drawout |
12 DC | S47359 | S33809 | S48490 |
24-30 AC/DC | S47360 | S33810 | S48491 |
48-60 AC/DC | S47361 | S33811 | S48492 |
100-130 AC/DC | S47362 | S33812 | S48493 |
200-240 AC/DC | S47363 | S33813 | S48494 |
277 AC | S47364 | S33814 | S48495 |
380-480 AC | S47365 | S33815 | S48496 |
MX operating time at Vn:  50 ms ±10 (NW and NT)
XF operating time at Vn: Â
70 ms ±10 (NW ≤ 4000 A)
80 ms ±10 (NW > 4000 A)
55 ms (NT)
NOTE: Â 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 200 ms.