Reliable Voltage Stabilizers & Power Solutions
Protect your valuable equipment with Four-S high-performance stabilizers. Trusted by homes, offices, and industries across India.
150+
Successful Projects
98%
Client Satisfaction
Strategic Growth
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Transform challenges into opportunities through creative solutions
Expert Team
Industry veterans dedicated to your success and growth
Proven Results
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- All Projects
- AVS MODEL
- SVS MODEL
FS- 50
FS- D300 , FS-D400, FS-D500
FS-L100
FS-D100
FS-DWM - 200
FS-300, FS-400,FS-500
FS-100
FS-DL100
5kVA Micro Controller Servo Voltage Stabilizer
15kVA Micro Controller Servo Voltage Stabilizer
40kVA Micro Controller Servo Voltage Stabilizer
30kVA Micro Controller Servo Voltage Stabilizer
20kVA Micro Controller Servo Voltage Stabilizer
About
Find Out More About Us
Powering Reliability With Innovation
At Four-S Enterprises, we specialize in designing and manufacturing high-quality Voltage Stabilizers, Servo Stabilizers, and Transformers that protect your appliances and machinery from harmful voltage fluctuations.
Since our inception, we have been committed to delivering products that combine technical excellence, durability, and energy efficiency. Our stabilizers and transformers are trusted by households, businesses, and industries across India.
With a strong focus on innovation and customer satisfaction, we provide tailored power solutions for residential, commercial, and industrial applications. Every product is built with precision to ensure safety, reliability, and long-term performance.
+
Years of Excellence
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Satisfied Clients
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Projects Completed
F.A.Q
Frequently Asked Questions
01
What is the purpose of a voltage stabilizer?
A voltage stabilizer protects your appliances from voltage fluctuations by automatically regulating the input supply. This ensures your devices get a stable voltage and prevents damage due to high or low voltage.
02
How do I choose the right stabilizer capacity for my appliance?
The stabilizer capacity depends on the power rating (in watts/tons) of your appliance. For example: • Refrigerator – 500 VA (FS-50) • 1 Ton AC – 3 KVA (FS-300) • 2 Ton AC – 5 KVA (FS-500) If you are unsure, share your appliance details with us and we will recommend the best option.
03
Do your stabilizers and transformers come with a warranty?
Yes. All our products come with a standard manufacturer warranty covering manufacturing defects. We also provide after-sales support and service to ensure long-lasting performance of your equipment.
04
Can one stabilizer be used for multiple appliances?
Yes, you can connect multiple appliances to one stabilizer, but only if the total load does not exceed the stabilizer’s capacity. For heavy appliances like ACs and refrigerators, we recommend using a dedicated stabilizer.
05
Do you provide customized stabilizers and transformers?
Yes. We design and manufacture custom stabilizers and toroidal transformers based on specific voltage, load, and application requirements for residential, commercial, and industrial needs.
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