Dol Motor Starter
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Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| /
Siemens 3TW72911AB74-5HP- 3.7KW DOL STARTER 6.3-10A-200-400VAC
In stock4.67 / 5.0
6 Reviews
Direct on line starter 3.7kW, relay range (6.3 A - 10 A) Control voltage (200 V-400 V)
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| / -
Original price ?4,146Original price ?4,146 - Original price ?4,146Original price ?4,146Current price ?2,544?2,544 - ?2,544Current price ?2,544| /
Siemens 3TW72911AB78-10 HP-7.5KW DOL STARTER 12.5-20A 200-400VAC
In stock4.71 / 5.0
7 Reviews
Direct on line starter 7.5 kW, relay range (12.5 A-20 A) Control voltage (200 V-400 V)
Original price ?4,146Original price ?4,146 - Original price ?4,146Original price ?4,146Current price ?2,544?2,544 - ?2,544Current price ?2,544| / -
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| /
Siemens 3.7kW 6.3-10A 415V SS Housing DOL Starter with SPP Birelay, 3TW72911AW74
In stock4.5 / 5.0
2 Reviews
Direct on line starter 3.7kW, relay range (6.3 A-10 A) Control voltage (415 V)
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| / -
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| /
Siemens 2.2kW 4-6.3A 415V SS Housing DOL Starter with SPP Birelay - 3TW72911AW72
In stockDirect on line starter 2.2kW, relay range (4 A-6.3 A) Control voltage (415 V)
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| / -
Original price ?3,888Original price ?3,888 - Original price ?3,888Original price ?3,888Current price ?2,386?2,386 - ?2,386Current price ?2,386| /
Siemens 3TW72911AB77- 7.5HP- 5.5KW DOL STARTER 10-16A-200-400VAC
In stockDirect on line starter 5.5kW, relay range (10 A - 6 A) Control voltage (200 V-400 V)
Original price ?3,888Original price ?3,888 - Original price ?3,888Original price ?3,888Current price ?2,386?2,386 - ?2,386Current price ?2,386| / -
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| /
Siemens 3TW72911AB72-1AB72-3HP- 2.2KW DOL STARTER 4-6.3A-200-400VAC
In stockSiemens 3TW72911AB72-1AB72-3HP- 2.2KW DOL STARTER 4-6.3A-200-400VAC
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| / -
Original price ?3,888Original price ?3,888 - Original price ?3,888Original price ?3,888Current price ?2,386?2,386 - ?2,386Current price ?2,386| /
Siemens 5.5kW 10-16A 415V SS Housing DOL Starter with SPP Birelay, 3TW72911AW77
In stockDirect on line starter 5.5kW, relay range (10 A -16 A) Control voltage (415 V)
Original price ?3,888Original price ?3,888 - Original price ?3,888Original price ?3,888Current price ?2,386?2,386 - ?2,386Current price ?2,386| / -
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| /
Siemens 3TW72911AB71-2HP- 1.5KW DOL STARTER 3.2-5A-200-400VAC
In stockDirect on line starter 1.5 kW, relay range (3.2 A - 5 A) Control voltage (415 V)
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| / -
Original price ?4,146Original price ?4,146 - Original price ?4,146Original price ?4,146Current price ?2,544?2,544 - ?2,544Current price ?2,544| /
Siemens 7.5kW 12.5-20A 415V SS Housing DOL Starter with SPP Birelay, 3TW72911AW78
In stockDirect on line starter 7.5 kW, relay range (12.5 A-20 A) Control voltage (415 V)
Original price ?4,146Original price ?4,146 - Original price ?4,146Original price ?4,146Current price ?2,544?2,544 - ?2,544Current price ?2,544| / -
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| /
Siemens 3TW72911AW68- 1HP- 0.75KW DOL STARTER 1.6-2.5A/415 VAC
In stockDirect on line starter 0.75 kW kW,relay range (1.6 A-2.5 A) Control voltage (415 V)
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| / -
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| /
Siemens 3TW72911AW71- 2HP- 1.5KW DOL STARTER 3.2-5A/415 VAC
In stockSiemens 3TW72911AW71- 2HP- 1.5KW DOL STARTER 3.2-5A/415 VAC
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| / -
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| /
Siemens 3TW72911AB68- 1HP-0.75 KW DOL STARTER 1.6-2.5A-200-400VAC
In stockSiemens 3TW72911AB68- 1HP-0.75 KW DOL STARTER 1.6-2.5A-200-400VAC
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| / -
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| /
Siemens 3TW72911AW69- 1.5HP- 1.1KW DOL STARTER 2-3.2A/415 VAC
In stockSiemens 3TW72911AW69- 1.5HP- 1.1KW DOL STARTER 2-3.2A/415 VAC
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| / -
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| /
Siemens 3TW72911AW66- 0.75HP- 0.55KW DOL STARTER 1-1.6A/415 VAC
In stockSiemens 3TW72911AW66- 0.75HP- 0.55KW DOL STARTER 1-1.6A/415 VAC
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| / -
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| /
Siemens 3TW72911AB69- 1.5HP-1.1 KW DOL STARTER IN S.S. HOUSING INCL. BIRELAY 2-3.2A 200-400VAC
In stockSiemens 3TW72911AB69- 1.5HP-1.1 KW DOL STARTER IN S.S. HOUSING INCL. BIRELAY 2-3.2A 200-400VAC
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| / -
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| /
Siemens 3TW72911AW75- HP- KW DOL STARTER 8-12.5A/415 VAC
In stockSiemens 3TW72911AW75- HP- KW DOL STARTER 8-12.5A/415 VAC
Original price ?3,570Original price ?3,570 - Original price ?3,570Original price ?3,570Current price ?2,190?2,190 - ?2,190Current price ?2,190| / -
Original price ?17,328Original price ?17,328 - Original price ?17,328Original price ?17,328Current price ?10,632?10,632 - ?10,632Current price ?10,632| /
Siemens 3TW74962AR0 30HP-22kW-415V AC-DOL STARTER IN S.S. HOUSING WITHOUT BIRELAY
In stockSiemens 3TW74962AR0 30HP-22kW-415V AC-DOL STARTER IN S.S. HOUSING WITHOUT BIRELAY
Original price ?17,328Original price ?17,328 - Original price ?17,328Original price ?17,328Current price ?10,632?10,632 - ?10,632Current price ?10,632| / -
Original price ?10,008Original price ?10,008 - Original price ?10,008Original price ?10,008Current price ?6,140?6,140 - ?6,140Current price ?6,140| /
Siemens 3TW74932AR0 15HP-11kW-415V AC-DOL STARTER IN S.S. HOUSING WITHOUT BIRELAY
In stockSiemens 3TW74932AR0 15HP-11kW-415V AC-DOL STARTER IN S.S. HOUSING WITHOUT BIRELAY
Original price ?10,008Original price ?10,008 - Original price ?10,008Original price ?10,008Current price ?6,140?6,140 - ?6,140Current price ?6,140| / -
Siemens 3TW72911AB64- 0.33HP-0.25 KW DOL STARTER IN S.S. HOUSING INCL. BIRELAY 0.63-1A 200-400VAC
Siemens 3TW72911AB64- 0.33HP-0.25 KW DOL STARTER IN S.S. HOUSING INCL. BIRELAY 0.63-1A 200-400VAC
Original price ?0 - Original price ?0Original price ?0?0?0 - ?0Current price ?0| /Request for Quote -
Siemens 3TW72911AB68- 1HP-0.75 KW DOL STARTER 1.6-2.5A-200-400VAC
Siemens 3TW72911AB68- 1HP-0.75 KW DOL STARTER 1.6-2.5A-200-400VAC
Original price ?0 - Original price ?0Original price ?0?0?0 - ?0Current price ?0| /Request for Quote -
Siemens 3TW72911AB74-5HP- 3.7KW DOL STARTER 6.3-10A-200-400VAC
Direct on line starter 3.7kW, relay range (6.3 A - 10 A) Control voltage (200 V-400 V)
Original price ?0 - Original price ?0Original price ?0?0?0 - ?0Current price ?0| /Request for Quote -
Original price ?5,172Original price ?5,172 - Original price ?5,172Original price ?5,172Current price ?2,624?2,624 - ?2,624Current price ?2,624| /
ABB MA-0.75 400 ... 415 V coil
In stockABB MA-0.75 400 ... 415 V coil
Original price ?5,172Original price ?5,172 - Original price ?5,172Original price ?5,172Current price ?2,624?2,624 - ?2,624Current price ?2,624| / -
Original price ?5,172Original price ?5,172 - Original price ?5,172Original price ?5,172Current price ?2,624?2,624 - ?2,624Current price ?2,624| /
ABB MA-5.00 400 ... 415 V coil
In stockABB MA-5.00 400 ... 415 V coil
Original price ?5,172Original price ?5,172 - Original price ?5,172Original price ?5,172Current price ?2,624?2,624 - ?2,624Current price ?2,624| / -
Original price ?5,172Original price ?5,172 - Original price ?5,172Original price ?5,172Current price ?2,624?2,624 - ?2,624Current price ?2,624| /
ABB MA-3.00 400 ... 415 V coil
ABB MA-3.00 400 ... 415 V coil
Original price ?5,172Original price ?5,172 - Original price ?5,172Original price ?5,172Current price ?2,624?2,624 - ?2,624Current price ?2,624| /Request for Quote
Dol Starter: Buy Dol Motor Starter
?DOL starter, also known as a direct-on-line starter, is?a method of starting a 3-phase induction motor. In a DOL starter, a three-phase induction motor is connected directly across its 3-phase supply, and the DOL starter applies the full line voltage to the motor terminals. Direct-on-Line (DOL) Starter are highly reliable, time-tested, and suitable for wide range of agriculture and industrial applications
The DOL starter consists of a contactor and an overload relay. When the motor is started, the contactor closes and connects the motor directly to the power supply. The overload relay is used to protect the motor against excessive current.
DOL motor starter works:
Contactor: The contactor is an electromechanical switch that controls the power supply to the motor. It has a coil that, when energized, closes the main contacts and connects the motor to the power source.
Overload Relay: The overload relay is a protective device that senses the current flowing through the motor. If the current exceeds a preset value, indicating an overload condition, the overload relay trips and opens the contactor, disconnecting the motor from the power supply. This protects the motor from damage due to overheating.
Start/Stop Buttons: The DOL starter has separate start and stop buttons. Pressing the start button energizes the contactor coil, closing the main contacts and supplying power to the motor. The stop button de-energizes the contactor coil, opening the contacts and stopping the motor.
Thermal Overload Protection: In addition to the overload relay, DOL starters often include thermal overload protection. This is achieved using thermal elements embedded in the motor windings. If the temperature of the windings exceeds a certain limit, the thermal elements trip and open the circuit, disconnecting the motor from the power supply.
DOL Motor Starters are commonly used for small to medium-sized motors where the starting current is not excessive. They are simple, reliable, and cost-effective. However, they can cause high starting currents and mechanical stresses on the motor and connected equipment, which may need to be considered in certain applications. In cases where a reduced starting current is required, alternative starting methods such as star-delta or soft starters may be employed.
Q: What is a Direct On-Line (DOL) motor starter?
A: A DOL motor starter is a simple and widely used method for starting and stopping electric motors. It provides full voltage to the motor during the starting phase without any reduction in voltage or current.
Q: How does a DOL motor starter work?
A: A DOL starter consists of a contactor, an overload relay, and start/stop buttons. When the motor is started, the contactor closes, connecting the motor directly to the power supply. The overload relay protects the motor against excessive current. The start button energizes the contactor, and the stop button de-energizes it.
Q: What is the purpose of an overload relay in a DOL starter?
A: The overload relay in a DOL starter is a protective device that senses the current flowing through the motor. If the current exceeds a preset value, indicating an overload condition, the overload relay trips and opens the contactor, disconnecting the motor from the power supply. This protects the motor from overheating and damage.