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NSFTxx Soft Starters
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Our NSFTxx soft starters accelerate and decelerate motor loads smoothly, save energy and reduce system wear and tear. They interface with most (if not all) automation equipment in the market and are a favourite mechanical interface in many applications.

25HP NSFT25 Soft Starter

The NSFTxx soft starters are fully protected, digitally-controlled and programmable units. They are simple to install and are effectively employed in applications driving:

Main features of the line include:

  1. Overcurrent: load current is monitored in each phase and the overload limit is set by the user.
  2. Undercurrent: to detect mechanical coupling problems (such as loose belts and uncoupled transmissions) and unloaded conditions (such as a dry pump).
  3. Over/Under-voltage: to protect against supply line problems.
  4. Phase sequence and integrity: to protect against dropped phase faults and wrong phase sequence after reconnection to the grid.
  5. Noise and line disturbances: protected against the high-voltage spikes and faults of the industrial environment.
  6. Internal temperature: to protect against cooling circuit failure, typically caused by a blocked fan or ventilation inlet/outlet.

The individual model characteristics are summarized in the following table:

NSFTxx line characteristics at 3x400 VAC
Model Motor power,
Delta conneted,
Motor power,
Inside-Delta conneted,
Maximum starting
phase current,
Maximum motoring
phase current,
Motoring heat dissipation
(worst case, no by-pass),
NSFT10 10/7.5 17/12.5 60 15 61
NSFT15 15/11 26/19 100 23 95
NSFT20 20/15 35/25 135 30 109
NSFT25 25/18.5 43/32 165 37 138
NSFT30 30/22 52/38 190 45 150
NSFT35 35/26 60/44 210 52 174
NSFT40 40/30 69/51 235 60 202
NSFT45 45/33 78/57 300 67 218
NSFT50 50/37 86/63 330 75 252
NSFT55 55/40 95/70 360 82 275
NSFT60 60/44 103/76 377 91 306
NSFT75 75/55 129/95 470 114 345
NSFT90 90/66 155/114 555 137 414

Units above 90 HP and for non-standard or medium voltage applications are offered on a custom, per order basis.

The NSFT/ICCD panel controller accessory enables the NSFTxx to operate in a Quamatic or similar network as well as integrating all the functions required for local operation.

NSFT soft-starting system cabinet The line is also available in ready-to-install, completely assembled systems. Units over 10HP include a bypass contactor to minimize heat dissipation.
NSFT soft-starting system cabinet inside

Features are:

Other soft starter products of interest:

Go to the FAQ page, download PDF Overview, NSFTxx leaflets, request further information or a quote/offer

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