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Single Phase Transformers
21 Series · 209 Models
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Single Phase Transformers Overview
Single-phase control transformers provide galvanic isolation and a dedicated control voltage for machine tools, automation equipment, lighting systems, and control circuits. QDTB units span 25 VA to 50 kVA with input voltages up to 1000 V at 50/60 Hz, manufactured to ISO 9001 standards with high-grade steel cores that reduce no-load losses and noise. Product lines include DK, BK, JBK3, JBK5, JBK6, EI, OD, R-type, DTZ, UDG, SLB, JMB, DM, and JY, covering factory, workshop, CNC, and medical equipment applications.
Available Series
DK Series
The DK series single-phase control transformers provide stable voltage output for industrial control circuits, signal lighting, and auxiliary power supply applications. Compact design with high reliability.
BK Series
The BK series single-phase control transformers are widely used for machine tool control circuits and signal lighting power supply. Available in 25VA to 5000VA ratings.
JBK3 Series
The JBK3 series machine tool transformers are designed for CNC machines and automated equipment, providing isolated and stable power for control circuits.
JBK5 Series
The JBK5 series is an upgraded machine tool transformer with enhanced insulation and thermal performance, suitable for high-precision industrial automation.
JBK6 Series
The JBK6 series represents the latest generation machine tool transformers with superior performance, compact size, and enhanced safety features.
EI Series
EI laminated-core control transformers power low-voltage control and lighting circuits. 15-100 VA, 220 V primary to 24 V secondary, compact for panel mounting.
OD Series
OD isolation transformers provide 1:1 galvanic isolation to protect equipment and personnel. 25-1000 VA, 220 V to 220 V, low leakage current for sensitive loads.
Microwave Series
Microwave oven transformers step up 220 V AC to 2100 V to drive the magnetron. 500-3000 W output for household and commercial microwave ovens.
R-type Series
R-type transformers use a round R-core for low leakage flux, low noise and low loss. 10-2000 VA, 220 V primary, ideal for precision instruments and audio equipment.
DTZ Series
DTZ high-capacity isolation transformers provide 630-1600 VA of galvanic isolation for industrial equipment, suppressing noise and transients.
UDG Series
UDG 1:1 isolation transformers isolate sensitive equipment from mains noise. 1-10 kVA, 220 V to 220 V, for machinery and control systems.
UN Series
UN transformers deliver 25-200 kVA with fully custom secondary voltages for heavy industrial and utility applications.
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Application Scenarios
Machine Tools & CNC
Safe isolated control power for CNC machines, lathes and milling machines, protecting sensitive electronics from mains noise.
Industrial Automation
Dedicated control voltage for PLCs, sensors, relays and actuators in automated production lines.
Control Circuits
Galvanic isolation between power and control circuits, powering contactors, relays and indicator lamps.
Lighting Systems
Low-voltage supplies for safe lighting, machine work lamps and signal lighting installations.
Medical Equipment
Isolated, low-leakage power for diagnostic and treatment equipment where patient safety is critical.
HVAC & Building Automation
Control transformers for building management, HVAC actuators and access control systems.
Technical Advantages
Safe Galvanic Isolation
Primary-to-secondary isolation protects control circuits and personnel from mains faults.
Low No-Load Loss
High-grade silicon steel cores reduce standing losses and audible noise.
Compact Footprint
EI, R-type and toroidal cores offer high power density for space-constrained panels.
Custom Voltages
Multiple taps and custom secondary voltages up to 1000V input for any equipment spec.
FAQ - Single Phase Transformers
What is the difference between a control transformer and a distribution transformer?
How do I select the right capacity?
Can they run at 60 Hz?
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