Solid State Reduced Voltage Panels (Soft Start)

Altistart 48 soft start family

Solid state starters are a popular choice for applications requiring programmable reduced voltage starting. Soft start panels are complete motor control packages used in applications requiring a disconnecting means, starting circuitry, and motor overload protection.

These Soft starts are standard duty. In standard duty applications the soft start is designed to provide: Starting at 4x In for 23 seconds or at 3x In for 46 seconds from a cold state. Starting at 3x In for 23 seconds or at 4x In for 12 seconds with a load factor of 50% and with 10 starts per hour or an equivalent thermal cycling. The motor thermal protection conforms to Class 10 and 20 overload protection. For severe duty or high inertia loads, derate by 1 HP Size. Please consult factory for submersible applications.

New Utility Transformers allow higher available Fault Currents. When advised, we can provide controls with proper interrupting ratings. Short Circuits may cause welding, which is not considered a failure of the Contactor. (see UL508, Para 53)

Soft Start panels include:

  • NEMA 3R or better Enclosure;
  • Solid state starter (soft start);
  • Main circuit breaker with lockable handle;
  • “Full Bypass” Contactor;
  • Fused control transformer and 115v control circuitry;
  • Run light;
  • Fault light;
  • Hand-Off-Auto selector switch;
  • Terminal block for remote device.

Altistart 48 Soft Starts

The Altistart 48 soft start combines ease of selection with simple installation and high motor control performance. With its exclusive and patented motor Torque Control System, the Altistart 48 eliminates uncontrolled motor acceleration and deceleration, a problem inherent with standard voltage ramp soft starts. The Altistart 48 provides complete motor and machine protection and is available for motors ranging 208 to 575 volts. In addition to a built-in display and programming terminal, a remote keypad option and programming software is available to ease integration and commissioning. The Altistart 48 has a built-in Modbus port and is offered with serial communication gateways to such popular networks as Ethernet and DeviceNet.

  230V 3-phase 460V 3-phase
HP Catalog # List Catalog # List
5 ES23/005 4394    
10 ES23/010 4633 ES43/010 4394
15 ES23/015 5006 ES43/015 4471
20 ES23/020 6251 ES43/020 4633
25 ES23/025 6610 ES43/025 4758
30 ES23/030 7037 ES43/030 5006
40 ES23/040 8222 ES43/040 6251
50 ES23/050 9206 ES43/050 6610
60 ES23/060 10089 ES43/060 7037
75 ES23/075 13038 ES43/075 6222
100 ES23/100 14756 ES43/100 9206
125 ES23/125 16563 ES43/125 10089
150 ES23/150 20027 ES43/150 13038
200 ES23/200 22199 ES43/200 14756
250 ES23/250 26484 ES43/250 16563
300 Call for Quote   ES43/300 20027
400     ES43/400 22199
500     ES43/500 26484

Prices are subject to change without notice

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