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Soft Starter Accessories

Motors require a great amount of energy when rapidly accelerating to full speed. Variable frequency drives (VFDs) and soft starters can be used to reduce inrush currents and limit torque. This reduces wear and tear caused by frequent starts and stops extending the life of the motor.

Soft starters are solid-state devices that protect electric motors from damage caused by limiting the inrush of current associated with motor startup. They ramp up the initial voltage to the the motor producing a gentle climb to full speed. Soft starters typically use a series of thyristors or silicon controlled rectifiers (SCRs) to reduce the voltage. In the normal “on" state, the SCRs allow current while in the normal “off” state, the SCRs restrict current. The SCRs are engaged during ramp up, and bypass contactors are used after maximum speed is reached. This significantly reduces motor heating.

Soft starters are a cost-effective choice for applications that require torque and speed control during motor startup. Soft starters can be utilized in conveyer belt applications where a gradual startup can prevent misalignment and stress to the belt’s drive components. They can also be used on motors that control pump applications where there is often a risk of power surges.

Found 276 items
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Found 276 items
Manufacturer
ABB (5)
Benshaw (56)
Danfoss (8)
Eaton (168)
Lovato (6)
NAE (12)
Schneider Electric (19)
Component
Adapter Plate (1)
Anybus Module For DEVICENET (1)
Anybus Module For ETHERNET IP (1)
Anybus Module For MODBUS TCP (1)
Anybus Module For MODBUS-RTU (1)
Anybus Module For PROFIBUS (1)
Bus Interface Kit (2)
CIM Cable (1)
Circuit Board (1)
Communication Card (1)
Starter Voltage
2300 VAC (8)
4160 VAC (8)
Starter Amperage
105 Amp (2)
125 Amp (2)
240 Amp (2)
242 Amp (1)
305 Amp (4)
360 Amp (5)
37 Amp (6)
414 Amp (5)
420 Amp (6)
65 Amp (1)
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Schneider Electric VZ3V485 ATS480 Fan Replacement Kit
Free U.S Ground shipping
$485.93
$404.94
Normally In Stock
Danfoss 175G9000 MCD Plug-in Module for Modbus RTU
Free U.S Ground shipping
$369.60
$330.74
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Eaton EMA69D - Mounting Kit
Free U.S Ground shipping
$418.88
$349.07
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Schneider Electric VZ3V484 Soft Starter Cooling Fan for ATS480
Free U.S Ground shipping
$361.55
$301.29
Normally In Stock
ABB AB-ETHERNET-IP-2 PSTX ANYBUS, ETHERNET IP, 2 PORT
Free U.S Ground shipping
$978.32
$815.27
Normally In Stock
Eaton EMS41 - Transient Protector
Free U.S Ground shipping
$378.02
$315.02
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Schneider Electric VW3G22400 Small Fan for 220V
Free U.S Ground shipping
$135.00
$112.50
Normally In Stock
NAE SS-ADXL-CX01 Connection Dongle
Free U.S Ground shipping
$268.49
$223.74
Normally In Stock
Eaton EMA69B - Mounting Kit
Free U.S Ground shipping
$380.54
$317.12
Normally In Stock
Danfoss 175G3061 MCD Remote Operator Only
Free U.S Ground shipping
$301.20
$269.53
Normally In Stock
Danfoss 175G9004 MCD Remote Keypad & Interface Kit
Free U.S Ground shipping
$456.00
$408.04
Normally In Stock
Benshaw KPMX3SLCD - Small LCD Keypad for Soft Starters with MX3 Technology
Free U.S Ground shipping
$400.08
$333.40
Normally In Stock
Benshaw BIPC-300048-01 - Snubber Assembly for Low Voltage Soft Starters
Free U.S Ground shipping
$121.56
$101.30
Normally In Stock
Benshaw KP-PIC-RC-02 - EMX4i Remote Keypad Kit (Keypad,Card and Cable)
Free U.S Ground shipping
$436.37
$363.64
Normally In Stock
Schneider Electric VW3G4104 Power Connector TeSys U to Altistart U01
Free U.S Ground shipping
$22.67
$18.89
Normally In Stock
Schneider Electric VX4G48165Y ATS48 Printed Circuit Board
Free U.S Ground shipping
$176.94
$147.45
Normally In Stock
Benshaw 995-17309-00 - Finger Guards
Free U.S Ground shipping
$223.18
$185.98
Normally In Stock
Danfoss 175G9001 MCD Plug-in Module for Profibus
Free U.S Ground shipping
$516.00
$461.73
Normally In Stock
Danfoss 175G9007 MCD Finger Guard Kit
Free U.S Ground shipping
$336.00
$300.66
Normally In Stock
Benshaw KP-PIM-RO-01 - CSXi Remote Operator and Interface Kit (PIM-RO-01)
Free U.S Ground shipping
$461.76
$384.80
Normally In Stock
Benshaw SCR-100004-00 - SCR, 218 AMP AVERAGE, 1600 VOLT
Free U.S Ground shipping
$215.00
$179.17
Normally In Stock
Benshaw SCR-100009-00 - DUAL SCR MODULE, 162 AMP, 1400V
Free U.S Ground shipping
$322.06
$268.38
Normally In Stock
Benshaw SCR-1718 - Replacement SCR Module for RB2, RB3, RX2E and RX3E Soft Starter
Free U.S Ground shipping
$242.22
$201.85
Normally In Stock
Benshaw SCR-1727 - Replacement SCR Module for RB2, RB3, RX2E and RX3E Soft Starter
Free U.S Ground shipping
$918.08
$765.07
Normally In Stock
Benshaw SCR-1730 - Replacement SCR Module for RB2, RB3, RX2E and RX3E Soft Starter
Free U.S Ground shipping
$232.25
$193.54
Normally In Stock
Benshaw SCR-1743 - Replacement SCR Module for RB2, RB3, RX2E and RX3E Soft Starter
Free U.S Ground shipping
$697.63
$581.36
Normally In Stock
Benshaw PC-SCC-PC-01 - EMX4 Smart Card
Free U.S Ground shipping
$375.58
$312.98
Normally In Stock
Eaton EMA69A - Mounting Kit
Free U.S Ground shipping
$305.15
$254.29
Normally In Stock
Eaton EMM14T - Vibration Plate
Free U.S Ground shipping
$305.15
$254.29
Normally In Stock
Eaton EMM13R - Mounting Plate
Free U.S Ground shipping
$132.88
$110.73
Normally In Stock
Eaton DS7-FAN-032 - Internal Fan
Free U.S Ground shipping
$172.63
$143.86
Normally In Stock
Eaton EMA75L - Pitch Connector
Free U.S Ground shipping
$36.74
$30.62
Normally In Stock
Eaton SS-IP20-R - Ip20 Kit
Free U.S Ground shipping
$137.96
$114.97
Normally In Stock
Eaton SS-IP20-TU - Ip20 Kit
Free U.S Ground shipping
$275.94
$229.95

Motor Starters, Soft Starters and VFDs

Motor Starters

Motor starters safely start and stop a motor in industrial applications. They are designed with a contactor, overload and circuit protection. They are used when basic motor control is required, where torque on the motor is not a concern and speed control is not needed. The advantages of motor starters include: lower cost, allows for remote operation, allows for monitoring of motor state (with the use of auxiliary contacts) and they are safe and efficient. The disadvantages include: high inrush current that can cause fuses to blow and breakers to trip if the inrush is too high, and the starter will allow a full torque to start the motor which can cause the motor to ramp up to full speed very quickly potentially causing the motor to wear and degrade prematurely.

Soft Starters

Soft starters protect motors from inrush current by gently ramping up the motor to full speed. They provide all of the same functions as a traditional motor starter. The advantages of soft starters include: they are less expensive than a VFD when only startup control is needed, they are a smaller system than a VFD where space is a concern and they prevent unwanted torque upon startup, prolonging the life of the motor. The disadvantages include: they are more expensive than a traditional motor starter and they do not allow for full speed control. 

VFDs

Variable Frequency Drives (VFDs) allow for the slow ramp up of a motor during startup and the slowing down of the motor during shutdown. They also allow for full speed control during the entire run cycle of the motor. VFDs provide the same functions as both the traditional motor starters and soft starters. The advantages of VFDs include: full speed control (start, stop and in-between), more custom control and monitoring, energy savings due to efficient motor usage and less wear and tear on the motors. The disadvantages include: they are more expensive and larger than other motor control options and they generate heat that may require fans or AC units.