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5-2-1 COMPRESSOR SAVER

5-2-1 COMPRESSOR SAVER is a line of aftermarket components for reciprocating compressors and single-phase HVAC equipment, distributed globally by 3G Electric. The brand's product families center on hard start kits and external-mount surge protective devices (SPDs), both aimed at the electrical side of compressor and system reliability. Hard start kits in this line are three-wire devices that add starting torque by inserting a capacitance range in series with the compressor's start winding during each start cycle. The kits are specified by cooling tonnage and by capacitance in microfarads (MFD), with common ranges including 88–108 MFD, 189–227 MFD, and 270–324 MFD. Operating voltage for the hard start kits is 208 to 240 V AC, and they are intended for reciprocating compressors in single-phase HVAC systems. The external-mount SPD family covers single-phase HVAC equipment at 120/240 V AC, with a maximum continuous operating voltage of 150/300 V AC and a voltage protection rating of 600 V for line-to-neutral and line-to-ground modes. These SPDs are housed in plastic enclosures and are designed for external mounting on or near the equipment they protect. The product set is narrow and application-specific: it addresses locked-rotor current, hard-starting conditions, and transient overvoltage on single-phase HVAC circuits. 3G Electric supplies these items with datasheets, specification confirmation, and logistics support for international orders. Buyers can verify capacitance, voltage, tonnage range, and compressor type against the published specs before ordering. The line is not a general-purpose electrical catalog; it is a focused set of retrofit and replacement parts for service technicians, maintenance teams, and procurement groups that support HVAC equipment. Because the parts are selected by compressor and system parameters rather than by brand of equipment, they can be applied across a range of single-phase reciprocating compressor installations. 3G Electric's role is to make the specification data available, confirm part numbers against the application, and handle export documentation and shipping. The brand does not publish performance claims beyond the electrical ratings listed on the datasheets, and the selection process is driven by matching those ratings to the compressor nameplate and system voltage. For hard start kits, the key selection variables are compressor type (reciprocating), control voltage (208–240 V AC), capacitance range (MFD), and cooling capacity in tons. For the SPD, the variables are system voltage (120/240 V AC), MCOV (150/300 V AC), VPR (600 V L-N, L-G), and enclosure material. These are the parameters a buyer should have on hand when requesting a quote. 3G Electric does not manufacture these products; it distributes them and provides the supporting documentation and logistics for global delivery.

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About 5-2-1 COMPRESSOR SAVER

5-2-1 COMPRESSOR SAVER is a line of aftermarket components for reciprocating compressors and single-phase HVAC equipment, distributed globally by 3G Electric. The brand's product families center on hard start kits and external-mount surge protective devices (SPDs), both aimed at the electrical side of compressor and system reliability. Hard start kits in this line are three-wire devices that add starting torque by inserting a capacitance range in series with the compressor's start winding during each start cycle. The kits are specified by cooling tonnage and by capacitance in microfarads (MFD), with common ranges including 88–108 MFD, 189–227 MFD, and 270–324 MFD. Operating voltage for the hard start kits is 208 to 240 V AC, and they are intended for reciprocating compressors in single-phase HVAC systems. The external-mount SPD family covers single-phase HVAC equipment at 120/240 V AC, with a maximum continuous operating voltage of 150/300 V AC and a voltage protection rating of 600 V for line-to-neutral and line-to-ground modes. These SPDs are housed in plastic enclosures and are designed for external mounting on or near the equipment they protect. The product set is narrow and application-specific: it addresses locked-rotor current, hard-starting conditions, and transient overvoltage on single-phase HVAC circuits. 3G Electric supplies these items with datasheets, specification confirmation, and logistics support for international orders. Buyers can verify capacitance, voltage, tonnage range, and compressor type against the published specs before ordering. The line is not a general-purpose electrical catalog; it is a focused set of retrofit and replacement parts for service technicians, maintenance teams, and procurement groups that support HVAC equipment. Because the parts are selected by compressor and system parameters rather than by brand of equipment, they can be applied across a range of single-phase reciprocating compressor installations. 3G Electric's role is to make the specification data available, confirm part numbers against the application, and handle export documentation and shipping. The brand does not publish performance claims beyond the electrical ratings listed on the datasheets, and the selection process is driven by matching those ratings to the compressor nameplate and system voltage. For hard start kits, the key selection variables are compressor type (reciprocating), control voltage (208–240 V AC), capacitance range (MFD), and cooling capacity in tons. For the SPD, the variables are system voltage (120/240 V AC), MCOV (150/300 V AC), VPR (600 V L-N, L-G), and enclosure material. These are the parameters a buyer should have on hand when requesting a quote. 3G Electric does not manufacture these products; it distributes them and provides the supporting documentation and logistics for global delivery.

Common Applications

  • Residential HVAC service — 5-2-1 COMPRESSOR SAVER 88–108 MFD hard start kit (SKU 32ZN44) for 1–3 ton reciprocating compressors
  • Light commercial rooftop units — 5-2-1 COMPRESSOR SAVER 189–227 MFD hard start kit (SKU 32ZN45) for 3-1/2 to 5 ton compressors
  • HVAC maintenance programs — 5-2-1 COMPRESSOR SAVER 270–324 MFD hard start kit (SKU 32ZN46) for 4–5 ton reciprocating compressors
  • Single-phase HVAC equipment protection — 5-2-1 COMPRESSOR SAVER external-mount SPD (TPSPD) at 120/240 V AC
  • Compressor retrofit and replacement — 5-2-1 COMPRESSOR SAVER three-wire hard start kits for 208–240 V AC systems
  • Aftermarket parts procurement — 5-2-1 COMPRESSOR SAVER hard start kits and SPDs sourced through 3G Electric for global delivery

Guides & Resources

Frequently asked questions

Common questions about 5-2-1 COMPRESSOR SAVER from 3G Electric.

What is the difference between the 5-2-1 COMPRESSOR SAVER hard start kits with different MFD ranges?

The MFD (microfarad) range determines how much starting capacitance the kit adds to the compressor's start winding. The 88–108 MFD kit (SKU 32ZN44) is specified for 1 to 3 ton cooling capacities. The 189–227 MFD kit (SKU 32ZN45) covers 3-1/2 to 5 ton. The 270–324 MFD kit (SKU 32ZN46) is for 4 to 5 ton units. All three operate at 208 to 240 V AC and are three-wire designs for reciprocating compressors. Selection should be based on the compressor's required starting torque and the nameplate tonnage, not on physical size alone.

What are the electrical ratings of the 5-2-1 COMPRESSOR SAVER external-mount SPD?

The external-mount surge protective device (MPN TPSPD) is rated for single-phase HVAC equipment at 120/240 V AC. Its maximum continuous operating voltage is 150/300 V AC. The voltage protection rating is 600 V for both line-to-neutral and line-to-ground modes. The enclosure is plastic and the device is designed for external mounting. These ratings should be compared against the system voltage and the equipment being protected before installation.

Can 5-2-1 COMPRESSOR SAVER hard start kits be used on any reciprocating compressor?

The kits are specified for reciprocating compressors operating at 208 to 240 V AC in single-phase HVAC systems. They are not universal for all compressor types. The selection depends on the compressor's cooling capacity in tons and the required capacitance range. For example, a 3-ton reciprocating compressor would typically use the 88–108 MFD kit, while a 5-ton unit would use the 189–227 MFD or 270–324 MFD kit depending on starting requirements. Always verify the compressor nameplate and the kit's control voltage before ordering.

What does 'instant restart' mean for 5-2-1 COMPRESSOR SAVER hard start kits?

The 'instant restart' designation in the product specifications refers to the kit's ability to provide additional starting torque immediately after a shutdown, reducing the time the compressor is locked out due to high head pressure. This is a functional characteristic of the hard start kit's capacitor and relay arrangement. It does not imply a specific restart time in seconds; that depends on the system's equalization characteristics. The kits are three-wire devices that connect to the compressor's start and run windings and the common terminal.

How does 3G Electric support orders for 5-2-1 COMPRESSOR SAVER products?

3G Electric distributes 5-2-1 COMPRESSOR SAVER hard start kits and SPDs globally. Support includes providing datasheets with electrical ratings, confirming part numbers against the application parameters (compressor type, voltage, MFD range, tonnage), and handling export documentation and logistics. Buyers can request a quote by specifying the SKU or the required specifications. 3G Electric does not manufacture these products and does not provide installation services; the role is distribution and order fulfillment.

What is the voltage protection rating of the 5-2-1 COMPRESSOR SAVER SPD and what does it mean?

The voltage protection rating (VPR) is 600 V for line-to-neutral and line-to-ground modes. VPR is the measured limiting voltage during a surge event; a lower number indicates a tighter clamp. The 600 V rating applies to the external-mount SPD rated at 120/240 V AC. This device is intended for single-phase HVAC equipment and should be applied within its maximum continuous operating voltage of 150/300 V AC. It is not a whole-building surge protector and is not rated for three-phase systems.