Refrigerator Compressor by Starting Method PTC to Inverter Vestar

Refrigerator Compressor by Starting Method OEM

Introduction:

Title: Complete Range of Starting Methods – Match Your System Requirements

Starting Method	Technology	Capacity Range	Starting Torque	Key Features	Typical Applications
PTC (Positive Temperature Coefficient)	Reciprocating / Rotary	50W – 200W	Low to Medium	Simple construction, low cost, self-resetting, limited to 3-5 starts per minute	Mini fridges, dorm refrigerators, small freezers, entry-level appliances
RSIR (Resistance Start Induction Run)	Reciprocating	60W – 250W	Medium	High starting torque, current-dependent relay, reliable for capillary tube systems	Top-mount refrigerators, chest freezers, commercial display cases
RSCR (Resistance Start Capacitor Run)	Reciprocating / Rotary	100W – 350W	Medium-High	Run capacitor improves efficiency, better power factor, quieter operation	Mid-range refrigerators, bottom-mount units, energy-efficient designs
CSIR (Capacitor Start Induction Run)	Reciprocating	150W – 300W	High	High starting torque for difficult loads, start capacitor only	Large freezers, high-back-pressure applications
CSCR (Capacitor Start Capacitor Run)	Reciprocating	200W – 400W	Very High	Maximum starting torque, highest efficiency, two capacitors	Commercial refrigeration, walk-in coolers, heavy-duty applications
Inverter / Soft Start	Inverter Rotary / Linear	100W – 500W	Controlled	Variable speed, soft start (no inrush current), precise control, highest efficiency	Premium refrigerators, French door, built-in, smart appliances

UL/ETL certified – all starting methods meet North American safety standards
115V/60Hz standard (12/24V DC options for inverter models)
Refrigerants: R134a, R600a, R290 – compatible with all starting methods
20 years appliance manufacturing – complete electrical engineering support

Product Details

Vestar Refrigerator Compressor Series – By Starting Method

Starting Method	Model	Technology	Cooling Capacity (W)	COP	Starting Current (A)	Running Current (A)	LRA (Locked Rotor)	Capacitor (µF)	Relay Type	Application
PTC	VPT‑R50	Reciprocating	50	0.95	4.5	0.7	8.5	–	PTC thermistor	Mini fridge, wine cooler
PTC	VPT‑R70	Reciprocating	70	1.05	5.0	0.8	9.5	–	PTC thermistor	Dorm fridge, beverage
PTC	VPT‑R95	Reciprocating	95	1.20	6.0	1.0	11.0	–	PTC thermistor	Compact refrigerator
PTC	VPT‑R120	Reciprocating	120	1.30	7.0	1.1	13.0	–	PTC thermistor	Compact refrigerator
PTC	VPT‑RO120	Rotary	120	1.60	6.5	1.0	12.0	–	PTC thermistor	Compact freezer
RSIR	VRS‑R135	Reciprocating	135	1.31	8.5	1.3	16.0	–	Current relay	Top‑mount refrigerator
RSIR	VRS‑R170	Reciprocating	170	1.35	10.0	1.5	19.0	–	Current relay	Top‑mount refrigerator
RSIR	VRS‑R205	Reciprocating	205	1.40	12.0	1.8	22.0	–	Current relay	Large top‑mount
RSIR	VRS‑RO150	Rotary	150	1.60	9.0	1.3	17.0	–	Current relay	Chest freezer
RSCR	VRC‑RO180	Rotary	180	1.64	8.5	1.2	16.0	15 µF run	PTC/Current	Bottom‑mount refrigerator
RSCR	VRC‑RO200	Rotary	200	1.66	9.5	1.4	18.0	18 µF run	PTC/Current	Bottom‑mount refrigerator
RSCR	VRC‑RO250	Rotary	250	1.66	11.0	1.7	21.0	20 µF run	Current relay	Side‑by‑side refrigerator
RSCR	VRC‑R180	Reciprocating	180	1.45	10.5	1.6	20.0	15 µF run	Current relay	Top‑mount refrigerator
CSIR	VCS‑RO200	Rotary	200	1.50	14.0	1.5	28.0	80 µF start	Potential relay	Chest freezer, high torque
CSIR	VCS‑RO250	Rotary	250	1.50	16.0	1.8	32.0	100 µF start	Potential relay	Large freezer
CSIR	VCS‑R220	Reciprocating	220	1.42	15.0	1.9	30.0	90 µF start	Potential relay	Commercial display
CSCR	VCC‑RO300	Rotary	300	1.50	18.0	2.0	35.0	120 µF start + 25 µF run	Potential relay	Commercial freezer
CSCR	VCC‑R280	Reciprocating	280	1.48	17.0	2.2	33.0	110 µF start + 20 µF run	Potential relay	Walk‑in cooler
CSCR	VCC‑R320	Reciprocating	320	1.50	19.0	2.5	38.0	130 µF start + 30 µF run	Potential relay	Walk‑in freezer
Inverter	VIN‑LI180	Inverter Linear	180	2.00	0.5 (soft start)	0.8	None	–	Electronic	French door refrigerator
Inverter	VIN‑LI220	Inverter Linear	220	2.04	0.6 (soft start)	1.0	None	–	Electronic	French door refrigerator
Inverter	VIN‑LI280	Inverter Linear	280	2.07	0.8 (soft start)	1.2	None	–	Electronic	Side‑by‑side refrigerator
Inverter	VIN‑LI320	Inverter Linear	320	2.06	1.0 (soft start)	1.4	None	–	Electronic	Built‑in refrigerator
Inverter	VIN‑LI380	Inverter Linear	380	2.11	1.2 (soft start)	1.6	None	–	Electronic	Premium built‑in
Inverter	VIN‑RI250	Inverter Rotary	250	1.72	0.7 (soft start)	1.3	None	–	Electronic	Side‑by‑side refrigerator

Starting Method Comparison

Starting Method	Starting Torque	Efficiency	Relative Cost	Starting Current	Component Count	Typical Applications
PTC	Low	Low	$	Medium	1 (thermistor)	Small refrigerators, mini fridges
RSIR	Medium	Low	$	High	2 (relay + protector)	Standard refrigerators, freezers
RSCR	Medium-High	Medium	$$	Medium	3 (relay + protector + run cap)	Energy-efficient refrigerators
CSIR	High	Medium	$$	Very High	3 (relay + protector + start cap)	High-torque applications, freezers
CSCR	Very High	High	$$$	Very High	4 (relay + protector + start + run cap)	Commercial, heavy-duty
Inverter	Controlled (soft start)	Highest	$$$$	Very Low (<1A)	Electronic controller	Premium, variable speed

Starting Current Comparison

Starting Method	100W Model Starting Current	200W Model Starting Current	300W Model Starting Current	Inrush Duration
PTC	5 – 6 A	9 – 10 A	–	0.5 – 1.5 seconds
RSIR	8 – 9 A	12 – 14 A	18 – 20 A	0.3 – 0.8 seconds
RSCR	7 – 8 A	10 – 12 A	15 – 17 A	0.3 – 0.8 seconds
CSIR	–	14 – 16 A	18 – 22 A	0.2 – 0.5 seconds
CSCR	–	–	18 – 20 A	0.2 – 0.4 seconds
Inverter	0.3 – 0.5 A	0.5 – 0.8 A	0.8 – 1.2 A	Soft start (no surge)

Advantages and Limitations by Starting Method

Starting Method	Advantages	Limitations
PTC	• No moving parts, long life • Self-resetting • Low cost • Simple wiring	• Limited starts per minute (3-5) • Not suitable for high-torque applications • Efficiency loss from heat
RSIR	• High starting torque • Proven reliability • Simple construction • Low cost	• Low running efficiency • High starting current • Current relay can stick
RSCR	• Better running efficiency (run capacitor) • Quieter operation • Good starting torque • Improved power factor	• Higher cost than RSIR • More components • Run capacitor failure possible
CSIR	• Very high starting torque • Good for difficult loads • Start capacitor boosts torque	• Low running efficiency • Very high starting current • Potential relay required
CSCR	• Maximum starting torque • Best efficiency for fixed speed • Smooth operation • Long life	• Highest cost for fixed speed • Most components • Complex troubleshooting
Inverter	• Soft start (no current surge) • Variable speed operation • Highest efficiency • Precise temperature control • Diagnostic capable	• Highest initial cost • Electronic controller required • Complex service

Selection Guide by Application

Application	Required Starting Torque	Recommended Starting Method	Why
Mini Fridge / Wine Cooler	Low	PTC	Simple, low cost, adequate for small systems
Dorm Refrigerator	Low-Medium	PTC / RSIR	PTC for economy, RSIR for reliability
Top‑Mount Refrigerator	Medium	RSIR / RSCR	RSIR for standard, RSCR for efficiency
Bottom‑Mount Refrigerator	Medium-High	RSCR	Better efficiency, good torque
Side‑by‑Side Refrigerator	Medium-High	RSCR / Inverter	RSCR for value, inverter for premium
French Door Refrigerator	Variable	Inverter	Soft start, variable speed, quiet
Chest Freezer	High	RSIR / CSIR	High starting torque for cold starts
Commercial Display Case	High	CSIR / CSCR	Reliable starting, continuous duty
Walk‑In Cooler / Freezer	Very High	CSCR / Inverter	Maximum torque for large systems

Component Specifications by Starting Method

Starting Method	Relay Type	Relay Specifications	Capacitor Type	Capacitor Specifications	Protector Type
PTC	PTC thermistor	4-20 ohms cold, 50-500 ohms hot	None	–	Internal line break / external disc
RSIR	Current relay	0.5-5 ohms coil, N.O. contacts	None	–	Internal overload / external klixon
RSCR	Current/PTC relay	0.5-5 ohms coil + PTC assist	Run capacitor	10-30 µF, 370V	Internal / external
CSIR	Potential relay	200-500 ohms coil, N.C. contacts	Start capacitor	50-150 µF, 330V	External disc / internal
CSCR	Potential relay	200-500 ohms coil, N.C. contacts	Start + Run	Start: 80-150 µF, Run: 15-30 µF	External disc / internal
Inverter	Electronic controller	Microprocessor controlled	DC bus capacitors	1000-5000 µF, 400V	Electronic protection

OEM/ODM Capabilities by Starting Method

Service	PTC	RSIR	RSCR	CSIR	CSCR	Inverter
Basic Branding	✓	✓	✓	✓	✓	✓
Custom Relay Selection	✓	✓	✓	✓	✓	–
Custom Capacitor Matching	–	–	✓	✓	✓	–
Controller Programming	–	–	–	–	–	✓
Soft Start Customization	–	–	–	–	–	✓
UL/ETL File Access	✓	✓	✓	✓	✓	✓
Mixed Container Orders	✓	✓	✓	✓	✓	✓

Certifications & Compliance

UL / ETL (North America) – all starting methods
IEC 60335 safety standard
Component certifications (UL recognized relays, capacitors)
RoHS compliant
Energy Star qualified (inverter and select RSCR models)

[Contact our engineering team for starting method selection assistance and volume pricing.]

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Refrigerator Compressor by Starting Method OEM

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