Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

Supco Hard Start: 2 Wire, 88-108 MFD, 208 to 277V AC, 1/2 hp to 3 hp - Hard Start Kits
SupcoHard Start Kits

Supco Hard Start: 2 Wire, 88-108 MFD, 208 to 277V AC, 1/2 hp to 3 hp

The Supco Hard Start: 2 Wire is a hard start kit designed for Permanent Split Capacitor compressors. It features an Electronic Potential Relay (MPN SPP6E) with a capacitance range of 88-108 MFD and operates on a…

SKU 3G-OTH-67748

Brand
Supco
Item
Hard Start: 2 Wire, 88-108 MFD, 208 to 277V AC, 1/2 hp to 3 hp
Category
Hard Start Kits
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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
SPP6E
Type
1/2 hp to 3 hp, Electronic Potential Relay
AC
208 to 277V
MFD
88-108
Control Voltage
208 to 277V AC
For Compressor Type
Permanent Split Capacitor
For Cooling Capacity Range
1/2 to 3 ton

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The Supco Hard Start: 2 Wire is a hard start kit designed for Permanent Split Capacitor compressors. It features an Electronic Potential Relay (MPN SPP6E) with a capacitance range of 88-108 MFD and operates on a control voltage of 208 to 277V AC. This unit is suitable for cooling capacities from 1/2 to 3 ton.

Frequently Asked Questions

What is the Supco SPP6E hard start kit used for?

The Supco SPP6E hard start kit is used to provide additional starting torque for Permanent Split Capacitor (PSC) compressors in air conditioning and refrigeration systems. It helps prevent compressor short-cycling and ensures reliable startup under low-voltage or heavy-load conditions, extending equipment life.

What are the specifications of the Supco SPP6E hard start kit?

The Supco SPP6E is a 2-wire hard start kit with an Electronic Potential Relay. It has a capacitance range of 88-108 MFD and operates on 208 to 277V AC. It is rated for compressors from 1/2 hp to 3 hp and cooling capacities from 1/2 to 3 ton, designed for PSC compressors.

Where to buy the Supco SPP6E hard start kit worldwide?

You can source the Supco SPP6E hard start kit worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply genuine Supco components for HVAC applications.

How to install the Supco SPP6E hard start kit?

To install the Supco SPP6E, first disconnect power to the system. Connect the two wires in series with the compressor run capacitor. Ensure the relay is mounted securely and wiring matches the compressor terminal labels. Re-energize and test for proper compressor start. Always follow local electrical codes and manufacturer guidelines.

Used in

Common applications for Supco
Commercial refrigeration display cases — Supco RO82 relay and CSS-25U starter for compressor motor control without run capacitors
Medium-load HVAC systems — Supco SPP 6/SPP 8 hard-start devices to reduce compressor inrush current and extend motor lifespan
Cold-chain pharmaceutical and food storage — SL300TH temperature–humidity data logger for continuous monitoring and regulatory documentation
Refrigerant service operations — Piercing valves and perforator cocks in 1/2" and 5/8" sizes for fast, non-invasive line access
Compressor thermal management — Universal Compressor Door for reducing shell temperature and improving efficiency in hot ambient conditions
Retrofit and field repairs — Supco controls with Quick Connect terminals for rapid installation in legacy refrigeration circuits

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
Hard Start Kit: 2 Wire, 43-53 MFD, 90-277V AC, 1/2 hp to 10 hp, Positive Temp Coefficient Relay (MPN SPP5)
Supco
Hard Start Kit: 2 Wire, 43-53 MFD, 90-277V AC, 1/2 hp to 10 hp, Positive Temp Coefficient Relay (MPN SPP5)
Hard Start Kit: 3 Wire, 270-324 MFD, 208 to 277V AC, 4 hp to 5 hp, Mechanical Potential Relay (MPN 3W3)
Supco
Hard Start Kit: 3 Wire, 270-324 MFD, 208 to 277V AC, 4 hp to 5 hp, Mechanical Potential Relay (MPN 3W3)
Hard Start: 2 Wire, 189-227 MFD, 208 to 277V AC, 1 hp to 3 hp, For 1 to 3 ton Cooling Capacity Range (MPN MPR5)
Supco
Hard Start: 2 Wire, 189-227 MFD, 208 to 277V AC, 1 hp to 3 hp, For 1 to 3 ton Cooling Capacity Range (MPN MPR5)
Compressor Saver: 3 Wire, 88-108 MFD, 208 to 240V AC, 4 hp to 5 hp, Instant Restart (MPN CSRU1)
5-2-1 COMPRESSOR SAVER
Compressor Saver: 3 Wire, 88-108 MFD, 208 to 240V AC, 4 hp to 5 hp, Instant Restart (MPN CSRU1)

More from Supco

View all Supco parts
Hard Start Kit: 3 Wire, 189-227 MFD, 208 to 277V AC, 3 1/2 hp to 5 hp, Mechanical Potential Relay (MPN 3W2)
Supco
Hard Start Kit: 3 Wire, 189-227 MFD, 208 to 277V AC, 3 1/2 hp to 5 hp, Mechanical Potential Relay (MPN 3W2)
Hard Start Kit: 3 Wire, 243-292 MFD, 115V AC, 1/4 hp to 1/3 hp, Positive Temp Coefficient Relay (MPN RCO410)
Supco
Hard Start Kit: 3 Wire, 243-292 MFD, 115V AC, 1/4 hp to 1/3 hp, Positive Temp Coefficient Relay (MPN RCO410)
Hard Start: 5 Wire, 243-292 MFD, 115V AC, 1/3 hp to 1/2 hp, Mechanical Potential Relay (MPN RCO210)
Supco
Hard Start: 5 Wire, 243-292 MFD, 115V AC, 1/3 hp to 1/2 hp, Mechanical Potential Relay (MPN RCO210)
Hard Start Kit: 2 Wire, 130-156 MFD, 90-277V AC, 1 1/2 hp to 10 hp, Positive Temp Coefficient Relay (MPN SPP7S)
Supco
Hard Start Kit: 2 Wire, 130-156 MFD, 90-277V AC, 1 1/2 hp to 10 hp, Positive Temp Coefficient Relay (MPN SPP7S)
Hard Start: 2 Wire, 270-324 MFD, 208 to 277V AC, 3 1/2 hp to 5 hp, Mechanical Potential Relay (MPN MPR1)
Supco
Hard Start: 2 Wire, 270-324 MFD, 208 to 277V AC, 3 1/2 hp to 5 hp, Mechanical Potential Relay (MPN MPR1)
Hard Start Kit: 3 Wire, 88-108 MFD, 208 to 277V AC, 1 hp to 3 hp, Mechanical Potential Relay (MPN 3W1)
Supco
Hard Start Kit: 3 Wire, 88-108 MFD, 208 to 277V AC, 1 hp to 3 hp, Mechanical Potential Relay (MPN 3W1)
Hard Start Kit: 3 Wire, 145-175 MFD, 115V AC, 1/12 hp to 1/5 hp, Positive Temp Coefficient Relay (MPN RCO810)
Supco
Hard Start Kit: 3 Wire, 145-175 MFD, 115V AC, 1/12 hp to 1/5 hp, Positive Temp Coefficient Relay (MPN RCO810)
Hard Start Kit: 2 Wire, 130-156 MFD, 90-277V AC, 1/2 hp to 10 hp, Positive Temp Coefficient Relay (MPN SPP6)
Supco
Hard Start Kit: 2 Wire, 130-156 MFD, 90-277V AC, 1/2 hp to 10 hp, Positive Temp Coefficient Relay (MPN SPP6)