Soft Starters

RSP Supply carries a complete line of soft starters engineered to deliver smooth motor start-up, reduce inrush current, and extend equipment life. Soft starters are essential for managing acceleration in three-phase motor systems, offering a cost-effective alternative to variable frequency drives (VFDs) when full-speed control isn’t required.

By gradually ramping up motor voltage, soft starters help prevent torque shock, mechanical stress, and electrical surges that can damage connected systems. Commonly used in pumps, compressors, conveyors, and HVAC equipment, these devices enhance reliability, improve energy efficiency, and reduce maintenance costs over time.

Many modern soft starter models also include built-in motor protection, such as overload monitoring, phase failure detection, and thermal safeguards. This makes them an ideal solution for industrial environments that demand long-term stability and consistent performance. 

Found 2615 items
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Found 2615 items
Manufacturer
ABB (117)
Benshaw (273)
Danfoss (216)
Eaton (293)
NAE (1625)
Schneider Electric (91)
Component
Combination Soft Starter (110)
Compact Soft Starter (34)
Enclosed Soft Starter (25)
MV Prepackaged Starter (8)
Open Chassis Soft Starter (19)
Open Chassis Starter (19)
Prepackaged Starter (16)
Pump Panel Starter (29)
Soft Start Controller (61)
Soft Starter (780)
Starter Voltage
208-575 VAC (37)
220 VAC (22)
230 VAC (47)
240 VAC (93)
460 VAC (134)
480 VAC (157)
575 VAC (130)
600 VAC (68)
690 VAC (19)
4160 VAC (8)
Starter Voltage Range
200-400 VDC (44)
200-575 VDC (44)
208-575 VAC (19)
230-460 VAC (26)
230-575 VAC (21)
Starter Coil Voltage
24 VDC (26)
240 VAC (769)
480 VAC (853)
600 VAC (12)
Starter Coil Voltage (Control)
24 VAC (130)
24 VDC (130)
100-250 VAC (64)
110 VAC (42)
110-120 VAC (2)
110-240 VAC (94)
120 VAC (149)
220-240 VAC (2)
240 VAC (97)
380-440 VAC (40)
Starter Horsepower
0.5 HP @ 208 V (3)
0.5 HP @ 210 V (1)
0.5 HP @ 230 V (1)
0.5 HP @ 460 V (1)
0.75 HP @ 240 V (2)
1 HP @ 200-240 V (1)
1 HP @ 208 V (3)
1 HP @ 210 V (1)
1 HP @ 230 V (2)
1 HP @ 460 V (2)
Starter Amperage
3 Amp (2)
3.7 Amp (2)
4 Amp (2)
6.9 Amp (2)
7 Amp (2)
7.8 Amp (2)
9 Amp (2)
10 Amp (3)
11 Amp (2)
11.5 Amp (60)
Starter Breaker Rating
40 Amp (3)
60 Amp (3)
70 Amp (5)
80 Amp (1)
90 Amp (1)
100 Amp (12)
125 Amp (5)
150 Amp (8)
200 Amp (6)
225 Amp (19)
Starter Current Rating
3 Amp (1)
3.4 Amp (4)
3.9 Amp (1)
4.2 Amp (2)
6 Amp (5)
6.1 Amp (2)
6.8 Amp (1)
7.6 Amp (2)
9 Amp (8)
9.6 Amp (2)
Starter Disconnect Type
Circuit Breaker (1592)
Fuse (17)
Starter Housing
Chassis (Protected IP20) (120)
IP00 (96)
NEMA 3R (90)
NEMA 4 (69)
NEMA 12 (89)
Open (19)
Open Chassis (19)
Starter HP
300 HP @ 600 VAC (1)
400 HP @ 480 VAC (1)
Starter Maximum Voltage
460 VAC (2)
480 VAC (65)
5000 VAC (43)
Starter Mounting
Din Rail Mount (88)
Starter NEMA Size
NEMA 3R (575)
NEMA 4 (538)
NEMA 4X (500)
NEMA 12 (538)
Starter Reversing Capability
Non Reversing (216)
Starter VFD Input Phases
Three Phase Input (216)
Normally In Stock
Danfoss 175G5235 Soft Starter MCD 202-030-T6-CV3
Free U.S Ground shipping
$2206.01
$1838.34
Normally In Stock
Danfoss 175G5236 Soft Starter MCD 202-037-T6-CV3
Free U.S Ground shipping
$2287.20
$1906.00
Normally In Stock
Danfoss 175G5237 Soft Starter MCD 202-045-T6-CV3
Free U.S Ground shipping
$2711.14
$2259.28
Normally In Stock
Danfoss 175G5239 Soft Starter MCD 202-075-T6-CV3
Free U.S Ground shipping
$3560.29
$2966.91
Normally In Stock
Danfoss 175G5238 Soft Starter MCD 202-055-T6-CV3
Free U.S Ground shipping
$3071.93
$2559.94
Normally In Stock
Danfoss 175G5176 Soft Starter MCD 201-007-T4-CV1
Free U.S Ground shipping
$997.34
$831.12
Normally In Stock
Danfoss 175G5202 Soft Starter MCD 201-030-T6-CV1
Free U.S Ground shipping
$1697.04
$1414.20
Normally In Stock
Danfoss 175G5200 Soft Starter MCD 201-018-T6-CV1
Free U.S Ground shipping
$1346.56
$1122.13
Normally In Stock
Danfoss 175G5194 Soft Starter MCD 201-055-T6-CV3
Free U.S Ground shipping
$2452.13
$2043.44
Normally In Stock
Danfoss 175G5233 Soft Starter MCD 202-018-T6-CV3
Free U.S Ground shipping
$1725.37
$1437.81
Normally In Stock
Danfoss 175G5234 Soft Starter MCD 202-022-T6-CV3
Free U.S Ground shipping
$2020.46
$1683.72
Normally In Stock
Eaton S801+V72N3S Soft Starter - 720 Amp
$19838.75
$16532.29
Normally In Stock
Benshaw CSXi-045-V6-C1 Compact Soft Starter - ND, 30-75 HP @ 230-575 VAC, 85 Amp
Free U.S Ground shipping
$2170.56
$1808.80
Normally In Stock
ABB PSE170-600-70 Soft Starter - 60-150 HP @ 208-600 VAC, 169 Amp, 600 VAC
Free U.S Ground shipping
$4895.00
$4079.17
Normally In Stock
Danfoss 136G7347 Soft Starter MCD6-42-BT5-S1-X-20-CV2
Free U.S Ground shipping
$1434.17
$1195.14
Normally In Stock
Danfoss 136G7350 Soft Starter MCD6-129-BT5-S1-X-20-CV2
Free U.S Ground shipping
$2733.04
$2277.53
Normally In Stock
Eaton S701E15N3S Soft Starter - 15 Amp
Free U.S Ground shipping
$1830.31
$1525.26
Normally In Stock
Eaton S811+T24N3S Soft Starter - 240 Amp
Free U.S Ground shipping
$8397.43
$6997.86
Normally In Stock
Eaton S801+R13N3S Soft Starter - 135 Amp
Free U.S Ground shipping
$6840.92
$5700.77
Normally In Stock
Benshaw CSXi-018-V6-C1 Compact Soft Starter - ND, 15-40 HP @ 230-575 VAC, 42 Amp
Free U.S Ground shipping
$1240.64
$1033.87
Normally In Stock
Danfoss 175G5226 Soft Starter MCD 202-045-T4-CV1
Free U.S Ground shipping
$2499.80
$2083.17
Normally In Stock
Danfoss 175G5227 Soft Starter MCD 202-055-T4-CV1
Free U.S Ground shipping
$2906.99
$2422.49
Normally In Stock
Danfoss 175G5228 Soft Starter MCD 202-075-T4-CV1
Free U.S Ground shipping
$3404.36
$2836.97
Normally In Stock
Danfoss 175G5214 Soft Starter MCD 202-037-T4-CV3
Free U.S Ground shipping
$2158.34
$1798.62
Normally In Stock
Danfoss 136G7337 Soft Starter MCD6-42-BT5-S1-X-20-CV1
Free U.S Ground shipping
$1434.17
$1195.14
Normally In Stock
Danfoss 175G5196 Soft Starter MCD 201-090-T6-CV3
Free U.S Ground shipping
$3781.93
$3151.61
Normally In Stock
Danfoss 175G5199 Soft Starter MCD 201-015-T6-CV1
Free U.S Ground shipping
$1282.13
$1068.44
Normally In Stock
Danfoss 175G5231 Soft Starter MCD 202-007-T6-CV3
Free U.S Ground shipping
$1412.26
$1176.88
Normally In Stock
Danfoss 175G5244 Soft Starter MCD 202-018-T6-CV1
Free U.S Ground shipping
$1725.37
$1437.81
Normally In Stock
Danfoss 175G5224 Soft Starter MCD 202-030-T4-CV1
Free U.S Ground shipping
$2029.49
$1691.24
Normally In Stock
Danfoss 175G5240 Soft Starter MCD 202-090-T6-CV3
Free U.S Ground shipping
$4243.22
$3536.02
Normally In Stock
Danfoss 175G5241 Soft Starter MCD 202-110-T6-CV3
Free U.S Ground shipping
$4770.24
$3975.20
Normally In Stock
Danfoss 175G5166 Soft Starter MCD 201-015-T4-CV3
Free U.S Ground shipping
$1180.32
$983.60
Normally In Stock
Benshaw EMX4i-0397B-V5-C1-H Soft Starter - HD, 100-200 HP @ 230-460 VAC, 261 Amp
Free U.S Ground shipping
$7461.01
$6217.51
Normally In Stock
Benshaw CSXi-007-V6-C1 Compact Soft Starter - ND, 5-15 HP @ 230-575 VAC, 18 Amp
Free U.S Ground shipping
$952.76
$793.97
Normally In Stock
Schneider Electric ATS480C14Y Soft Starter - 140 Amp, 3 Phase
Free U.S Ground shipping
$3543.47
$2952.89

FAQs – Soft Starters

Q: What does a soft starter do?
A soft starter gradually increases voltage to the motor during start-up, reducing inrush current and mechanical stress for smoother acceleration and extended equipment life.

Q: How does a soft starter differ from a VFD?
A soft starter controls voltage only during motor start-up, while a VFD allows full speed control throughout operation. Soft starters are a simpler, lower-cost solution for fixed-speed motors.

Q: What types of applications use soft starters?
Soft starters are ideal for pumps, fans, compressors, and conveyors, where reduced mechanical wear and smooth acceleration are priorities.

Q: Which brands of soft starters does RSP Supply carry?
RSP Supply offers soft starters from top manufacturers including ABB, Benshaw, Danfoss, Eaton, NAE, and Schneider Electric, ensuring reliable motor control solutions for every industrial, commercial, and HVAC application.

Q: Do soft starters include motor protection features?
Yes. Many models include overload, phase loss, and thermal protection, ensuring stable and safe motor operation under varying load conditions.

Why Buy Soft Starters from RSP Supply

When you purchase soft starters from RSP Supply, you’re choosing quality, reliability, and expertise. We stock a wide selection of soft starters designed for industrial, commercial, and HVAC applications, all engineered to provide smooth motor acceleration and reduced electrical stress. Our knowledgeable team can help you choose the ideal model for your voltage, horsepower, and application requirements.

At RSP Supply, we only partner with trusted manufacturers to ensure every product meets the highest performance standards. With our combination of competitive pricing, fast shipping, and dedicated support, you can count on RSP Supply to provide dependable motor control solutions that help your systems run more efficiently and safely.