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    9A Star Delta Starter, 4kW/ 7.5kW, 220V/ 380V AC

    5 out of 5 based on 3 reviews | Write a review
    Compact size 9A starting current star delta starter for sale. It has short circuit protection, overload protection, missing phase protection and other functions. Y delta motor connection starter at low price consists of 3 contactors and an air delay head for three phase electric induction motor circuit control, contact form 3P+NO or 3P+NC, working at 4kW/ 7.5kW power, 220V or 380V AC voltage.
    SKU: ATO-STAR-09
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    High performance wye delta connection starter consists of 3 contactors and an air delay head. Left contactor is connected to main circuit inlet and outlet and the main contactor of the thermal overload relay. The others are forward reverse contactors. Perfect for circuit control of three phase 5.5Hp/ 10Hp asynchronous motor.

    Star Delta Starter Specification

    • Model: ATO-QJX2-09
    • Rated Operational Current (AC-3): 9A
    • Coil Rated Voltage: 220V AC, 380V AC (Optional)
    • Contact Form: 3P+NO or 3P+NC (Optional)
    • Power of Controllable 3-phase Squirrel-cage Motor (AC-3): 220V, 4kW; 380V, 7.5kW
    • Conventional Heating Current: 20A
    • Rated Insulation Voltage: 690V
    • Electric Life: 1200 times/h
    • Mechanical Life: 3600 times/h
    • Matching Fusing Model: RT16-16
    • Average Power Consumption (20℃) @ 50Hz: Pick-up 76VA; Holding 9.4VA
    • Rail Size: 35mm
    • Ambient Temperature: -5℃~+40℃
    • Altitude: ≤2000m
    • Class of Pollution: Class 3
    • Installation Category:
    • Dimension (L*W*H): 124mm*140mm*149mm
    • Weight: 1kg

    Air Delay Head Specification

    • Rated Current: 10A
    • Delay Time: Power Off Time Delay 0.1~30s
    • Dimension (L*W*H): 50mm*45mm*60mm
    • Auxiliary Contact: 1NO+1NC

    Dimension (Unit: mm)

    9-32 amp star delta starter dimension

    Wiring Diagram

    Wiring diagram of star delta starter

    Tips: How does a start delta starter work?

    Star delta starter is a starting method of asynchronous motors. Because the starting current of asynchronous motors is relatively large during the starting process, motors with large capacity can use "star-delta switching start". This is a simple step-down starting method. When starting, the stator winding is connected into a star shape, and then connected into a triangle after starting, which can reduce the starting current and reduce its impact on the power grid. Such a start-up method is called star-delta decompression start, referred to as star-delta start (Y-O start).

    When using star delta starter, the starting current is only 1/3 of the original direct starting according to the delta connection. If the starting current in direct starting is calculated as 6~7Ie, then in star delta starter, the starting current is only 2~2.3 times. At the same time, the starting voltage is only one-third of the root sign of the original delta connection method when starting directly. When the load does not have strict requirements on the starting torque of the motor and the starting current of the motor must be limited and the motor meets the 380V/O wiring conditions, the star delta starter can be used.

    Existing reviews of 9A Star Delta Starter, 4kW/ 7.5kW, 220V/ 380V AC
    Do you use a 100 volt to engage the delta starter?
    On your 9A delta starters, do you use a 100 volt to engage the starter? I see you offer a 220 and a 380-volt coil voltage but can I get a 110v?
    From: crane | Date: 19/07/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Unfortunately, our ATO-STAR-09 does not have a 110v coil voltage, only 220v and 380v.
    The star-delta-starter is basically 380v because it is used with a three-phase asynchronous motor.
    Satisfied with this star delta starter
    The starter is easy to assemble. The workmanship is fine, the quality is very good, the price is cheap, and the shipping is very fast.
    From: Glenn | Date: 02/03/2023
    Was this review helpful? Yes No (0/0)
    Will this starter fit my engine?
    I really want to buy a star but I wonder whether it fits my engine about 7KW. I have no idea about selecting a starter because my friend always help me. This time, I have to select by myself.
    From: Stephen | Date: 24/04/2022
    Was this review helpful? Yes No (0/0)
    ATO Responded
    The power of your engine and the starter should be close or it will waste the power, even damage the equipment.
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