I. Series Overview
The Secop SC series consists of hermetic reciprocating compressors for light commercial and professional refrigeration, divided into two main branches:
| Series | Refrigerant | Backpressure Type | Typical Applications | Displacement Range |
| CL Series | R404A / R507 / R452A | Low Backpressure (LBP) & Medium-Low Backpressure (LBP/MBP) | Frozen food storage, ice cream freezers, medical ultra-low temperature, commercial kitchen refrigerators | 10.29–15.28 cm³ |
| FT Series | R134a | Low Backpressure (LBP) | Beverage coolers, display cases, vending machines, commercial refrigerators | 12.87–20.95 cm³ |
Common Features: The entire series uses POE (polyolester) oil, high starting torque motors (CSIR/RSIR/CSCR optional), and built-in protectors.
Core Difference: The CL series focuses on medium and low-temperature freezing (down to -35°C), while the FT series specializes in light commercial refrigeration (LBP). The two series differ in refrigerant and motor configuration and cannot be interchanged.
II. Comprehensive Parameter Comparison Table (9 Models Total)
| No. | Model | Series | Refrigerant | Disp. (cm³) | Backpressure | Power Supply (50/60Hz) | Weight (kg) | Height (mm) | Certifications | Typical Applications | LBP Cooling Capacity Ref. (W) |
| 1 | SC10CLX | CL | R404A/R507 | 10.29 | LBP/MBP | 220–240V | 13.1 | 209 | UL,CCC,KC | Small/medium freezers / medical refrigeration | 932 (@-10°C) |
| 2 | SC12CL | CL | R404A/R507 | 12.87 | LBP | 115V or 220–240V | ~13.1 | 209 | UL,CCC | Freezer storage / ice cream freezers | 67–1505 (@-35～-5°C) |
| 3 | SC12CLX.2 | CL | R404A | 12.87 | LBP | 220–240V | ~13.1 | 209 | UL,CCC | High-end freezers / ultra-low temp equipment | Same as SC12CL |
| 4 | SC15CL | CL | R404A/R507/R452A | 15.28 | LBP/MBP | 220–240V (50Hz) | 13.8 | 219 | VDE,CCC,EAC | Large freezers / kitchen refrigerators | 1251 (@-10°C) |
| 5 | SC15CLX.2 | CL | R404A | 15.28 | LBP/MBP | 220–240V (50Hz) | 13.8 | 219 | VDE,CCC,EAC | High-end commercial freezing | Same as SC15CL |
| 6 | SC12FT | FT | R134a | 12.87 | LBP | 220–240V or 208–230V | 12.7 | 209 | CCC,VDE | Beverage machines / display cases / vending | 321 |
| 7 | SC15FT | FT | R134a | ~15.28 | LBP | 220–240V or 208–230V | ~13 | ~219 | CCC,VDE | Medium display cases / commercial freezers | Between 12FT and 18FTX |
| 8 | SC18FTX | FT | R134a | 17.69 | LBP | 220–240V or 208–230V | 13.8 | 219 | CCC,VDE | Large display cases / island freezers | 447 |
| 9 | SC21FTX | FT | R134a | 20.95 | LBP | 220–240V (50Hz) or 208–230V | 13.7 | 219 | CCC,VDE | High-capacity commercial freezers / premium displays | 569 |
Note: Cooling capacities are nominal values under LBP conditions; specific values may vary depending on evaporation temperature, condensation temperature, and operating conditions.
III. Detailed Explanation of Model-Specific Advantages
The following describes the unique value of each model within the CL and FT series respectively, integrating features, advantages, and benefits into a single narrative for easy understanding of their application positioning.
(A) CL Series (R404A/R507 Freezing Dedicated)
SC10CLX
This model is the only small-displacement compressor in the CL series with dual LBP and MBP capability. This design enables it to meet both low-temperature freezing (e.g., -25°C) and medium-temperature refrigeration (e.g., 0°C) requirements, achieving the flexibility of "one compressor serving dual purposes." For equipment manufacturers, this means fewer stock-keeping units and lower inventory costs; in scenarios such as pharmaceutical cold chains and small display cases that require both refrigeration and freezing, the SC10CLX is an ideal power core.
SC12CL
The SC12CL adopts a pure LBP (Low Backpressure) design, focusing its performance on deep freezing applications (minimum evaporation temperature down to -35°C). It offers both 115V/60Hz and 220-240V/50Hz voltage versions to accommodate power grids in different countries and regions. For demanding environments such as ice cream freezers and seafood cold cabinets that require continuous ultra-low temperatures, this model ensures stable core food temperatures while keeping energy consumption within a reasonable range, thanks to its optimized low-temperature EER.
SC12CLX.2
As the second-generation upgraded version of the SC12CL, the SC12CLX.2 further optimizes the motor drive and internal flow channel design while maintaining the same displacement and cooling capacity, resulting in smoother operation and 50/60Hz wide-frequency adaptability. For imported high-end freezers or medical ultra-low temperature storage equipment, this upgrade means more precise temperature control, lower vibration and noise, and longer trouble-free operation cycles, making it especially suitable for users with stringent reliability requirements.
SC15CL
The SC15CL is a large-displacement (15.28 cm³) compressor, notable for its simultaneous compatibility with three refrigerants: R404A, R507, and R452A, and its support for hot gas defrost. This multi-refrigerant compatibility allows users to change refrigerants or comply with environmental regulations without replacing the compressor, significantly reducing retrofit difficulty and costs; hot gas defrost effectively shortens defrost time and improves the operating efficiency of cold rooms or kitchen refrigerators. Therefore, this model is the preferred power source for large commercial freezers, cold storage rooms, and central kitchen refrigeration systems.
SC15CLX.2
Building upon the SC15CL, the SC15CLX.2 enhanced version focuses on improving stability during long-term continuous operation. It features a reinforced design for high-load conditions, with more durable bearings and valve assemblies, capable of handling scenarios requiring 24/7 refrigeration such as supermarket island freezers and fresh food distribution centers. For users, this means lower failure rates and reduced maintenance expenses, especially suitable for commercial environments with zero tolerance for downtime.
(B) FT Series (R134a Light Commercial Dedicated)
SC12FT
The SC12FT is the lightest model in the FT series (only 12.7 kg) and supports both CSIR and RSIR starting methods for flexible installation. The lightweight design facilitates equipment integration and on-site handling, while its low operating noise makes it ideal for densely populated retail locations such as beverage fountain dispensers and small vending machines. Meanwhile, its LBP energy efficiency ratio reaches 1.16, effectively saving electricity while meeting cooling demands, helping operators reduce long-term electricity bills.
SC15FT
The SC15FT acts as the "workhorse" of the FT series, with a displacement between the SC12FT and SC18FTX, precisely covering the needs of medium-capacity beverage coolers and display cases. This specification avoids the embarrassment of "an underpowered compressor struggling with a large load" or "an oversized compressor wasting energy on a small load," achieving the optimal balance between cooling performance and procurement cost. For beverage display cases in medium-sized supermarkets or convenience store freezers, the SC15FT provides just the right cooling capacity with outstanding cost-effectiveness.
SC18FTX
The SC18FTX boasts a large displacement of 17.69 cm³ and is optimized for tropical high-temperature conditions. Even at ambient temperatures up to 43°C, it maintains strong cooling output, effectively preventing temperature rise inside the cabinet during hot weather. Therefore, this model is especially suitable for installation in southern regions, outdoor locations, or poorly ventilated display cases, ensuring beverages and food remain in an ideal chilled state, enhancing customer satisfaction.
SC21FTX
As the largest displacement model in the entire SC series (20.95 cm³), the SC21FTX is equipped with a CSCR motor (Capacitor Start Capacitor Run), providing optimal starting torque and a speed of up to 3500 rpm. This enables it to rapidly lower the cabinet temperature at startup, making it ideal for the quick cooling needs of high-capacity commercial freezers or premium refrigeration display cases. For retail terminals requiring frequent door openings and large restocking volumes, the SC21FTX can quickly restore the set temperature, ensuring food safety and display quality.
IV. Quick Selection Guide by Application Scenario
| Application Scenario | First Choice | Alternative / Upgrade |
| Home / Commercial small freezers (≤300L) | SC10CLX | SC12CL (for lower temperatures) |
| Frozen food storage, ice cream freezers | SC12CL / SC12CLX.2 | SC15CL (for larger capacity) |
| Medical refrigerators, ultra-low temp freezers | SC10CLX | SC12CLX.2 (for higher precision) |
| Commercial kitchen refrigerators, cold rooms | SC15CL / SC15CLX.2 | — |
| Beverage fountain dispensers (cola machines) | SC12FT | — |
| Small beverage coolers, vending machines | SC12FT | SC15FT (for slightly larger volume) |
| Medium display cases (supermarket meat cases) | SC15FT | SC18FTX (for stronger freezing) |
| Large island freezers, seafood display cases | SC18FTX | SC21FTX (for maximum cooling) |
| High-capacity commercial freezers (≥800L) | SC21FTX | — |
V. Frequently Asked Questions (FAQ)
Q1: Can the CL and FT series be used interchangeably?
No. They use different refrigerants (R404A vs R134a). Although both use POE oil, their compatibility differs, and the motor designs and expansion devices are not universal. They must be matched according to the equipment design requirements.
Q2: What do the suffixes "X" and "X.2" in the model numbers mean?
"X" denotes an enhanced version, typically with superior performance or protection features; "X.2" denotes a second-generation improved model, optimized for operational stability or compatibility over the base model, with parameters basically consistent with the base version.
Q3: Do these compressors support variable frequency (inverter) speed control?
All models in this series are fixed-speed compressors and do not support variable frequency.
