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Supco Hard Start Kit: 2 Wire, 43-53 MFD, 90-277V AC, 1/2 hp to 10 hp - Hard Start Kits
SupcoHard Start Kits

Supco Hard Start Kit: 2 Wire, 43-53 MFD, 90-277V AC, 1/2 hp to 10 hp

The Supco SPP5 Hard Start Kit is a 2-wire start assist device designed for reciprocating compressors. It features a Positive Temperature Coefficient (PTC) relay and operates with a control voltage of 90-277V AC…

SKU 3G-OTH-67718

Also listed as: SPP 5 · SPP-5

Brand
Supco
Item
Hard Start Kit: 2 Wire, 43-53 MFD, 90-277V AC, 1/2 hp to 10 hp
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
SPP5
Type
1/2 hp to 10 hp, Positive Temp Coefficient Relay
AC
90-277V
MFD
43-53
Control Voltage
90-277V AC
For Compressor Type
Reciprocating
For Cooling Capacity Range
1/2 to 5 ton

Technical Documents

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

Product Description

The Supco SPP5 Hard Start Kit is a 2-wire start assist device designed for reciprocating compressors. It features a Positive Temperature Coefficient (PTC) relay and operates with a control voltage of 90-277V AC, providing a capacitance range of 43-53 MFD. This kit is suitable for cooling capacities from 1/2 to 5 tons and supports compressor horsepower from 1/2 to 10 hp.

Frequently Asked Questions

What is the Supco SPP5 Hard Start Kit used for?

The Supco SPP5 Hard Start Kit is used to assist reciprocating compressors during startup in HVAC and refrigeration systems. It provides a boost of starting torque for compressors from 1/2 hp to 10 hp, covering cooling capacities from 1/2 to 5 tons.

What are the specifications of the Supco SPP5 Hard Start Kit?

The Supco SPP5 is a 2-wire hard start kit with a Positive Temperature Coefficient (PTC) relay. It operates at 90-277V AC, delivers 43-53 MFD capacitance, and supports reciprocating compressors from 1/2 hp to 10 hp for cooling capacities of 1/2 to 5 tons.

Where to buy the Supco SPP5 Hard Start Kit worldwide?

You can source the Supco SPP5 Hard Start Kit through 3G Electric, a global industrial equipment distributor. We handle logistics, customs clearance, and delivery to worldwide destinations, ensuring the kit reaches your facility reliably.

How to install the Supco SPP5 Hard Start Kit?

Install the Supco SPP5 by connecting the two wires in series with the compressor run capacitor. Ensure power is off, verify voltage matches 90-277V AC, and mount the PTC relay securely. Follow standard HVAC safety practices and consult the manufacturer's guidelines for your specific compressor model.

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.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
Hard Start: 2 Wire, 88-108 MFD, 208 to 277V AC, 1/2 hp to 3 hp, Electronic Potential Relay (MPN SPP6E)
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Hard Start: 2 Wire, 88-108 MFD, 208 to 277V AC, 1/2 hp to 3 hp, Electronic Potential Relay (MPN SPP6E)
Hard Start Kit: 3 Wire, 270-324 MFD, 208 to 277V AC, 4 hp to 5 hp, Mechanical Potential Relay (MPN 3W3)
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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)
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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)

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Hard Start: 5 Wire, 243-292 MFD, 115V AC, 1/3 hp to 1/2 hp, Mechanical Potential Relay (MPN RCO210)
Hard Start: 2 Wire, 270-324 MFD, 208 to 277V AC, 3 1/2 hp to 5 hp, Mechanical Potential Relay (MPN MPR1)
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