Tag: 1/4 HP refrigerator compressor

Samsung MSE4A1Q‑L1G AK1, 1/4 hp, R600a, RSCR, LBP, 220‑240V 50Hz Hermetic Compressor Technical Review

The Samsung MSE4A1Q‑L1G AK1 is a hermetic reciprocating refrigerator compressor designed for domestic LBP applications with R600a refrigerant and a nominal cooling capacity around 175–180 W at ASHRAE conditions, equivalent to roughly 1/4 hp.
Engineers value this model for its efficient RSCR motor, compatibility with eco‑friendly isobutane, and robust design for household refrigerators and freezers.

Main technical specifications

Samsung lists the MSE4A1Q‑L1G in its AC220‑240V 50 Hz R600a LBP family, sharing the same platform as MSE4A0Q and MSE4A2Q models used in many high‑efficiency fridges.

Core data of MSE4A1Q‑L1G AK1

Parameter	Value
Brand	Samsung hermetic compressor
Model marking	MSE4A1Q‑L1G AK1 (also written MSE4A1QL1G/AK1)
Application	LBP household refrigerator/freezer, R600a
Refrigerant	R600a (isobutane), flammable A3
Voltage / frequency	220‑240 V, 50 Hz, single‑phase
Motor type	RSCR (resistance‑start, capacitor‑run)
Cooling capacity (ASHRAE ST)	≈175–203 W, about 695 BTU/h
Input power	≈118 W at rated conditions
Efficiency	COP around 1.49 W/W at ASHRAE standard
LRA (locked‑rotor current)	3.8 A shown on nameplate
Refrigerant charge type	Factory designed for R600a only
Country of manufacture	Korea (typical for this series)

The combination of ≈175–180 W cooling and ≈118 W electrical input places this compressor in the 1/4 hp class widely used in medium‑size top‑mount and bottom‑mount refrigerators.

Engineering view: performance and design

From an engineering perspective, the MSE4A1Q‑L1G AK1 is optimised for high efficiency at standard refrigerator evaporator temperatures while maintaining good starting torque with RSCR technology.

The RSCR motor uses a start resistor and run capacitor to improve power factor and efficiency compared with simple RSIR designs, which helps manufacturers meet modern energy‑label targets.
R600a’s low molecular weight and high latent heat allow lower displacement for the same cooling capacity, so the compressor can remain compact while delivering around 695 BTU/h of cooling at −23 °C evaporating conditions.

For technicians, the relatively low LRA of 3.8 A makes this model easier on start relays and PTC starters, especially in regions with weaker grid infrastructure at 220–240 V.

Comparison with other Samsung R600a LBP compressors

Samsung’s catalog groups the MSE4A1Q‑L1G within a family of R600a reciprocating compressors from about 94 W up to 223 W cooling capacity.

Position of MSE4A1Q‑L1G in the R600a range

Model	Approx. cooling W (ASHRAE ST)	Input W	COP W/W	Approx. hp	Typical use
MSE4A0Q‑L1G	162–188 W	≈107 W	≈1.51	≈1/5–1/4 hp	Small to medium fridge
MSE4A1Q‑L1G	175–203 W	≈118 W	≈1.49	≈1/4 hp	Medium refrigerator, high‑efficiency
MSE4A2Q‑L1H	192–223 W	≈127 W	≈1.51	≈1/4+ hp	Larger fridge or combi

Compared with MSE4A0Q‑L1G, the MSE4A1Q‑L1G offers a modest step‑up in cooling capacity at similar efficiency, making it a good choice when cabinet size or ambient temperature requires extra margin.
Against MSE4A2Q‑L1H, it trades some maximum capacity for slightly lower input power, which can be attractive for manufacturers targeting stringent energy‑label thresholds while keeping the same mechanical footprint.

Professional installation and service advice

Working with R600a compressors like the MSE4A1Q‑L1G requires strict adherence to flammable‑refrigerant standards and best practices.

Key engineering and safety recommendations

Use only tools and recovery systems rated for A3 refrigerants; never retrofit this compressor with R134a or other non‑approved gases because lubrication and motor cooling are optimised for R600a.
Ensure the system charge is accurately weighed with a precision scale, as overcharging even small amounts can increase condensing pressure and reduce COP significantly on low‑displacement units.
Maintain good airflow over the condenser and avoid installing units flush against walls; high condensing temperature quickly erodes the 1.49 W/W efficiency and can trigger thermal protector trips.

Diagnostic and replacement tips

When replacing, match not only voltage and refrigerant but also cooling capacity and LBP application class; choosing a smaller 140 W class unit in place of the MSE4A1Q‑L1G risks long running times and poor pull‑down.
Measure running current after start‑up; a healthy system will draw close to catalog input current at rated conditions, while notably higher current can indicate overcharge, blocked airflow, or partial winding short.

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Samsung MSE4A1Q‑L1G AK1 1/4 hp R600a RSCR LBP refrigerator compressor 220‑240V 50Hz technical data and comparison

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The Samsung MSE4A1Q‑L1G AK1 is a hermetic reciprocating refrigerator compressor designed for domestic LBP applications with R600a refrigerant and a nominal cooling capacity around 175–180 W at ASHRAE conditions, equivalent to roughly 1/4 hp. Engineers value this model for its efficient RSCR motor and robust design.

Verified PDF and catalog links about Samsung R600a compressors

Samsung global compressor page for AC220‑240V 50Hz R600a LBP family (includes MSE4A1Q‑L1G, PDF download link in page).
Direct Samsung “SAMSUNG COMPRESSOR” R600a catalog PDF listing MSE4A1Q‑L1G specifications.
Samsung AC200‑220V 50Hz R600a LBP compressor family catalog page with PDF.
Samsung corporate brochure “Samsung Compressor” PDF covering technical data and performance tables.
Spanish “Catalogo Compresores Samsung” PDF on Scribd with R600a LBP tables.
Tili Global technical sheet collection for Samsung household reciprocating compressors (model tables in downloadable PDF).
Samsung global business main compressor product brochure PDF linked from compressor overview section.
Additional Samsung R600a LBP catalog PDF linked in “Download PDF” button for AC220‑240V 50Hz series on product page.
Supplementary Samsung compressor specification PDF referenced within Scribd Samsung Compressor document.
General Samsung reciprocating compressor catalog PDF referenced across global business compressor section, covering multiple R600a LBP models.

Samsung MSE4A1Q‑L1G AK1, hermetic reciprocating refrigerator compressor mbsmpro

SAMSUNG-Compressor-Catalogue-2018 Download

High‑Efficiency AFT Refrigerator Compressors for Modern Cooling Needs

Introduction

Compact hermetic compressors remain the hidden workhorses of domestic and light‑commercial refrigeration, and the new AFT range shown here illustrates how far this technology has evolved in terms of efficiency, reliability and refrigerant flexibility. Designed for 220–240 V, 50/60 Hz operation, these units target fridge, freezer and beverage cooler manufacturers seeking cost‑effective performance in small capacities.

Product overview

The images present several AFT hermetic refrigerator compressors, including R134a models QD43H, QV30H, QD52H, QD65H and QD75H, alongside R600a models WV43YB and QD91YB, each supplied with starting components and packed in branded cartons for retail or OEM use. The power range spans from approximately 1/10 HP up to 1/4–1/5 HP, matching the typical requirements of single‑door refrigerators, small freezers and display cases in homes, shops and horeca applications.

Technical characteristics

All units are hermetically sealed, reducing leakage risk and simplifying installation while improving noise control thanks to the steel shell and vibration‑damped mounting feet. Nameplate markings highlight CE conformity and compatibility with either R134a or R600a refrigerants, allowing system designers to align with current environmental regulations and low‑GWP requirements.

Main models and specifications

Model	Refrigerant	Nominal power (HP)	Typical application scope	Supply	Notes
QV30H	R134a	1/10 HP	Small single‑door fridge, beverage cooler	220–240 V, 50/60 Hz	Compact footprint suitable for tight cabinets
WV43YB	R600a	1/10 HP	Energy‑efficient domestic fridge with isobutane charge	220–240 V, 50/60 Hz	Emphasis on low noise and environmental protection on carton
QD43H	R134a	1/8 HP	Undercounter refrigerators, mini freezers	220–240 V, 50/60 Hz	Supplied with external starting relay pack
QD52H	R134a	1/6 HP	Upright refrigerator or small chest freezer	220–240 V, 50/60 Hz	Higher displacement for faster pull‑down
QD65H	R134a	1/5 HP	Medium‑size fridge‑freezer combinations	220–240 V, 50/60 Hz	Marketed as “High Quality” on packaging
QD75H	R134a	1/4 HP	Larger domestic fridge‑freezers, light commercial coolers	220–240 V, 50/60 Hz	Highest capacity R134a unit in the group
QD91YB	R600a	1/5 HP	High‑efficiency freezers or display cabinets using R600a	220–240 V, 50/60 Hz	Carton stresses low noise and energy efficiency

Market positioning and uses

Branding on the cartons identifies AFT as targeting refrigerator manufacturers, service centres and spare‑parts retailers that require a broad selection of capacities in consistent packaging for easy stocking. The combination of R134a and R600a models allows technicians to replace ageing compressors in legacy appliances or design new equipment that meets current efficiency and environmental expectations without changing voltage or frequency.

Summary of the topic

This AFT compressor range offers compact hermetic units from 1/10 to around 1/4–1/5 horsepower, engineered for 220–240 V, 50/60 Hz refrigerators and freezers in domestic and light‑commercial settings. With options for both R134a and environmentally friendlier R600a, the series gives appliance manufacturers and service professionals a flexible, low‑noise, energy‑conscious solution for modern cooling systems.

Model list with basic type

QD43H – hermetic refrigerator compressor, typically R134a, 220–240 V, used in small fridges and freezers.
QV30H – hermetic refrigerator compressor, R134a, about 1/10 HP for mini refrigerators and coolers.
QD52H – R134a hermetic compressor around 1/6 HP, LBP, 428 W at MBP conditions in mbsm.pro data.
QD65H – R134a hermetic compressor around 1/5 HP, LBP, 467 W at MBP conditions in mbsm.pro data.
QD75H – R134a hermetic compressor usually marketed as 1/5 HP for commercial or domestic refrigeration.
WV43YB – universal R600a hermetic compressor around 1/10 HP for domestic refrigerators and coolers.
QD91YB – R600a hermetic compressor about 1/5 HP for higher‑capacity fridges and freezers.

Samsung MSE4A1Q‑L1G AK1, hermetic reciprocating refrigerator compressor