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Supco Hard Start Kit 3W3 - Hard Start Kits
SupcoHard Start Kits

Supco Hard Start Kit 3W3

The SUPCO Hard Start Kit: 3 Wire (MPN 3W3) is a hard start kit for reciprocating compressors with a cooling capacity range of 4 to 5 ton. It features a control voltage of 208 to 277V AC and a capacitance of 270-324…

SKU 3G-OTH-67892

Brand
Supco
Item
Hard Start Kit 3W3
Part Number
3W3
Category
Hard Start Kits
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Supco
Manufacturer Part Number
3W3
Type
4 hp to 5 hp, Mechanical Potential Relay
AC
208 to 277V
MFD
270-324
Control Voltage
208 to 277V AC
For Compressor Type
Reciprocating
For Cooling Capacity Range
4 to 5 ton

Technical Documents

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Supco Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SUPCO Hard Start Kit: 3 Wire (MPN 3W3) is a hard start kit for reciprocating compressors with a cooling capacity range of 4 to 5 ton. It features a control voltage of 208 to 277V AC and a capacitance of 270-324 MFD, suitable for 4 hp to 5 hp applications. This kit includes a mechanical potential relay.

Frequently Asked Questions

What is the SUPCO Hard Start Kit 3W3 used for?

The SUPCO Hard Start Kit 3W3 is used to provide additional starting torque for reciprocating compressors in HVAC systems, typically in 4 to 5 ton cooling capacity applications. It helps prevent hard starting and extends compressor life.

What are the specifications of the SUPCO Hard Start Kit 3W3?

The SUPCO Hard Start Kit 3W3 has a control voltage of 208 to 277V AC, capacitance of 270-324 MFD, and is rated for 4 hp to 5 hp compressors. It includes a mechanical potential relay and is designed for reciprocating compressors with 4 to 5 ton cooling capacity.

Where to buy the SUPCO Hard Start Kit 3W3 worldwide?

You can source the SUPCO Hard Start Kit 3W3 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to install the SUPCO Hard Start Kit 3W3?

To install the SUPCO Hard Start Kit 3W3, first disconnect power to the compressor. Connect the three wires per the wiring diagram: the potential relay coil and capacitor in series with the start winding. Ensure the voltage matches 208 to 277V AC. Always follow local electrical codes.

Used in

Common applications for Supco
Commercial refrigeration maintenance — Supco SL5709 defrost thermostat for Larkin evaporator coils
HVAC system troubleshooting — Supco IG418 universal hot surface igniter for gas furnace replacement
Condensate management in negative pressure systems — Supco NPW1H drain trap for rooftop units
Temperature and sound logging in cold storage — Supco CR4 circular chart recorder for compliance documentation
Compressor protection in light industrial cooling — Supco CSS-25U hard-start device for inrush current control
Safety limit control in heating appliances — Supco SHM350 surface-mount limit control for over-temperature shutdown
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Supco Products

3G Electric supplies Supco hard start kits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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