TECUMSEH refrigeration compressor CAJ4452Y / CAJ4461Y / TAJ4461Y / CAJ4476Y / CAJ4492Y / TAJ4492Y / CAJ4511Y / TAJ4511Y

I. Series Overview

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  Common Features: The entire series adopts a hermetic reciprocating design, with the motor and piston sealed within the same welded housing to effectively minimize leakage and simplify on-site maintenance. The CAJ/TAJ series features solder connections, with a Rotalock valve on the suction side.

  
  

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  Core Naming Rules:

  
  

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  No prefix ( CAJ) = Single-phase version (220-240V); T prefix ( TAJ) = Three-phase version (400V).

  
  

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  T suffix = R22 refrigerant; Z suffix = R404A/R507 refrigerant; Y suffix = R134a refrigerant.

  
  

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  Numeric Code: The first two digits (94/95/45, etc.) represent the series; the last three digits (80/10/13/17/19/52/61/76/92, etc.) represent the specific model.

  
  

II. Comprehensive Parameter Comparison Table

(A) T Series — R22 Refrigerant (Medium/High-Temp Applications)

(B) Z Series — R404A/R507 Refrigerant (Medium/High & Medium/Low-Temp Applications)

(C) Y Series — R134a Refrigerant (Medium/High-Temp Applications)

Note: The above cooling capacity data are nominal values at +7.2°C evaporation temperature; actual performance may vary depending on operating conditions. Alternative models for CAJ4452Y and CAJ4461Y are AE4456N and AJ4461N-FZ respectively.

III. Detailed Explanation of Model-Specific Advantages

The following describes the unique value of each model by refrigerant type (T series R22 / Z series R404A/R507 / Y series R134a) and power rating.

(A) T Series — R22 Refrigerant Medium/High-Temp Compressors

• CAJ9480T / TAJ9480T (5/8 HP) — Classic Entry-Level Choice

For scenarios requiring approx. 2 kW of medium-temperature cooling capacity — such as small walk-in coolers, butcher shop refrigerators, beverage coolers, and pastry display cases — the CAJ9480T, with its reliable French Tecumseh quality and moderate power, is the most trusted entry-level choice for contractors and equipment manufacturers worldwide. The three-phase version TAJ9480T is compatible with 400V industrial power, suitable for large equipment integration.

• CAJ9510T / TAJ9510T (1 HP) — Standard 1 HP Mainstream Choice

• CAJ9513T / TAJ9513T (1-1/8 HP) — High-Capacity Step-Up Choice

• CAJ4519T / TAJ4519T (1-3/4 HP) — Maximum Power in T Series

The CAJ4519T is the most powerful model in the T series, with a displacement of 34.45 cc and power of 1-3/4 HP. As the top-tier product of the series, it is engineered for applications with the highest R22 medium-temperature cooling demands, delivering the largest displacement and strongest cooling capacity.

(B) Z Series — R404A/R507 Refrigerant Medium/High & Medium/Low-Temp Compressors

The Z series uses R404A/R507 refrigerant, covering both medium/high-temperature (HBP) and medium/low-temperature (MBP) applications.

• CAJ9480Z / TAJ9480Z (5/8 HP) — R404A Entry-Level Choice

• CAJ9510Z / TAJ9510Z (1 HP) — R404A Standard 1 HP Choice

• CAJ9513Z / TAJ9513Z (1-1/8 HP) — Wide Temperature Range Choice

• CAJ4517Z / TAJ4517Z (1-1/4 HP) — R404A High-Capacity Choice

• CAJ4519Z / TAJ4519Z (1-3/4 HP) — Maximum Power in Z Series

The CAJ4519Z is the most powerful flagship model in the Z series, with a displacement of 34.45 cc and power of 1-3/4 HP. Cooling capacity at +7.2°C reaches 5,030 W. As the top-tier product of the series, it satisfies the most demanding commercial refrigeration needs with its maximum displacement and strongest R404A cooling capacity.

(C) Y Series — R134a Refrigerant Medium/High-Temp Compressors

• CAJ4452Y (3/7 HP) — R134a Entry-Level Choice

• CAJ4461Y / TAJ4461Y (1/2 HP) — R134a Standard Choice

• CAJ4476Y (5/8 HP) — R134a High-Capacity Choice

• CAJ4492Y / TAJ4492Y (3/4 HP) — Maximum Power in Y Series

The CAJ4492Y is the most powerful model in the Y series, with a displacement of 25.95 cc and power of 3/4 HP. Cooling capacity at +7.2°C reaches 1,617 W. As the top-tier product of the Y series, it meets the demands of large-volume commercial refrigeration equipment with its maximum R134a cooling capacity.

IV. Series-Wide Common Advantages 

• Features

• Hermetic Reciprocating Piston Structure: Motor and piston sealed within the same welded housing.

• Multi-Refrigerant Compatibility: T series (R22), Z series (R404A/R507), Y series (R134a).

• Dual Voltage Versions: Single-phase (CAJ) and three-phase (TAJ) options available.

• CSR Motor: Capacitor Start Capacitor Run for high starting torque.

• Rotalock Suction Valve: Standard Rotalock valve on suction side for CAJ/TAJ series.

• Solder Connections: Tubing uses solder connections.

• Oil Charge: Uniform oil charge of 887 cc across the entire series.

• Advantages

• Hermetic structure provides excellent sealing, effectively reducing refrigerant leakage.

• CSR motor design ensures stable starting and operation on single-phase power grids.

• Complete power spectrum from 5/8 HP to 1-3/4 HP covers all medium/high-temperature scenarios.

• French-made with reliable quality and exquisite craftsmanship.

• Rotalock valve design facilitates on-site maintenance and replacement.

• Benefits

• Stable and Reliable Operation: Tecumseh's high-reliability design ensures long-term trouble-free operation of refrigeration equipment.

• Easy Maintenance: Hermetic structure reduces leakage points; Rotalock valve simplifies service operations.

• Flexible Selection: Three refrigerants × dual voltage versions × complete power spectrum ensure the most suitable model for every project.

V. Quick Selection Guide by Application Scenario

• Quick Selection:

Select refrigerant first: Choose T series for R22, Z series for R404A/R507, Y series for R134a.

Select power supply: Choose CAJ for 1PH 220V, TAJ for 3PH 400V.

Select power: 5/8 HP → 9480, 1 HP → 9510, 1-1/8 HP → 9513, 1-1/4 HP → 4517, 1-3/4 HP → 4519.

Y series specific: 3/7 HP → 4452, 1/2 HP → 4461, 5/8 HP → 4476, 3/4 HP → 4492.

VI. Frequently Asked Questions (FAQ)

A: CAJ is the single-phase (1PH) version, compatible with 220-240V/50Hz power; TAJ is the three-phase (3PH) version, compatible with 400V/50Hz power. Their technical parameters are the same, differing only in power supply type.

A: T suffix = R22 refrigerant; Z suffix = R404A/R507 refrigerant; Y suffix = R134a refrigerant. They use different refrigerants and different refrigeration oils (mineral/alkylbenzene oil for R22, POE ester oil for R404A/R134a), and cannot be interchanged.