Sigma QD43H Compressor
The Sigma QD43H is a compact reciprocating compressor for R134a refrigeration systems operating in the low-back-pressure (LBP) range. It is designed for applications where the refrigeration system needs a relatively small cooling output and a compact compressor package.
With a 110W cooling capacity and 1/8+ HP motor rating, the QD43H suits smaller refrigeration loads. Its 220–240V, 50Hz electrical configuration makes it suitable for compatible single-phase refrigeration equipment.
The compressor uses an RSIR (Resistance Start Induction Run) motor system. When replacing an existing compressor, match the refrigeration load, R134a refrigerant, electrical supply, and LBP application before installation.
Product Highlights
- R134a refrigerant
- 110W cooling capacity
- 1/8+ HP motor
- LBP application
- RSIR motor
- 220–240V / 50Hz
- Compact compressor format
- Suitable for small refrigeration loads
Technical Specifications
| Specification | Details |
|---|---|
| Model | QD43H |
| Refrigerant | R134a |
| Cooling Capacity | 110W |
| Power | 1/8+ HP |
| Voltage | 220–240V |
| Frequency | 50Hz |
| Application | LBP |
| Motor Type | RSIR |
Why the QD43H?
The QD43H provides a compact R134a compressor option for low-pressure refrigeration applications without moving into a higher-capacity compressor range. Its 110W cooling capacity makes correct capacity matching especially important when selecting it as a replacement.
Always compare the original compressor’s refrigerant, cooling capacity, application range, voltage, frequency, and starting method before replacement.
