A Single Phase Transformer is one of the most widely used electrical devices for voltage conversion, isolation, and power regulation in residential, commercial, and light industrial environments. Unlike three-phase transformers that handle large-scale industrial loads, single phase transformers are ideal for lower power requirements where efficiency, reliability, and compact design are essential.
At ZHENGXI, we manufacture a complete range of high-quality single phase transformers designed to meet international standards (IEC, ISO, CE, FCC, RoHS). Whether you need a step-down transformer for appliances, an isolation transformer for safety, or a control transformer for machinery, we provide tailored solutions at competitive single phase transformer prices.
JMB Single-Phase Portable Lighting Step Down Control Transformer 25Va~50Kva
The JMB series is our rugged, portable single-phase control transformer built for lighting and small industrial equipment. It steps down common mains voltages to isolated, Safety Extra-Low Voltage (SELV) outputs — ideal for damp job sites, confined spaces and metal enclosures where safety matters. Available from 25 VA up to 50 kVA, with multiple taps and optional protective features.
High-Efficiency 500va-1000Kva Three Phase Dry Type Control Transformer 415V 400V 380V
The SBK Series three-phase dry-type control transformer (500VA–1kVA) delivers compact, reliable voltage conversion for industrial control, automation and machinery applications. Available with configurable primary and secondary voltages (standard: 380V / 400V / 415V) and rated for 50Hz or 60Hz systems, this transformer is designed for low-voltage networks (<1kV). Its dry, air-cooled construction eliminates oil, reduces fire risk and lowers routine maintenance — making it a safe, cost-effective choice for motor control centers, CNC systems, PLC cabinets and distribution panels.
GBK2 Single Phase 220v To 220v Toroidal Balanced Isolation Transformer 300va-2Kva
Ensure pristine power quality and maximum safety for sensitive loads with the GBK2 toroidal isolation transformer. Designed for applications that demand low noise, low leakage and stable output (220V → 220V), the GBK2 series isolates your equipment from mains disturbances, suppresses transients and reduces common-mode interference. Its compact toroidal core delivers higher efficiency and lower audible hum than conventional laminated transformers—ideal for medical devices, pro audio, laboratory instruments and industrial controls.
JBK 25va-5000va Single Phase Dry Type Machine Control Isolation Transformer 220v to 110v
The JBK series is a compact dry-type control transformer designed for machine control and isolation in industrial panels. Typical use is 220 V → 110 V control circuits for contactors, relays, PLCs and sensors. Built for low noise, high reliability and easy cabinet mounting, JBK protects control circuits from mains disturbances while simplifying wiring and maintenance.
Bk100va-5kva Single Phase Isolation Control Power Transformer
The BK series single-phase isolation control power transformer (commonly called a BK transformer) delivers stable, isolated control voltages for industrial and commercial equipment. Available from 100 VA to 5 kVA, the unit uses a thyristor (SCR) control module with feedback to provide precise closed-loop voltage regulation even when the input supply fluctuates.
This control transformer is built to international safety and efficiency standards and is perfect for CNC machines, PLCs, automation panels, lighting circuits, and other precision systems that need a stable control supply.
Applications of Single Phase Transformers
-
Residential – Home appliances, lighting systems, and small HVAC units.
-
Commercial – Office equipment, data systems, and medical devices.
-
Industrial – Control circuits, CNC machines, testing equipment, and instrumentation.
-
Renewable Energy – Small-scale solar or wind applications requiring voltage regulation.
Why Choose ZHENGXI Single Phase Transformers?
-
20+ years of manufacturing expertise in power solutions.
-
Customized designs to match your exact voltage and capacity requirements.
-
Global customer base, trusted by clients in energy, manufacturing, construction, and utilities.
-
Competitive single phase transformer prices with guaranteed quality and after-sales support.
FAQ
1. What is the difference between a single phase and three phase transformer?
Single phase transformers are designed for smaller loads and simpler distribution systems, while three phase transformers handle heavy industrial power requirements.
2. Can a single phase transformer be used for industrial applications?
Yes. Many light industrial machines, control circuits, and automation systems run efficiently on single phase transformers.
3. How do I choose the right transformer capacity?
Calculate the total load in kVA or VA and select a transformer rated at least 20% higher than your maximum demand for safe operation.
4. What affects the single phase transformer price?
The price depends on capacity (VA/kVA), type (step-down, isolation, control), winding material (copper/aluminum), and additional safety features.
5. How long do single phase transformers last?
With proper maintenance, high-quality units can last 15–25 years or longer.
EN 
FR 
ES 
PT 
IT 
RU 
AR