BK Single Phase Control Transformer | 50–5000VA, 24/36/110/220/380V

BK Single Phase Control Transformer | 50–5000VA, 24/36/110/220/380V

BK series single-phase control transformer is a dedicated isolation step-down power supply for industrial machine control circuits. Built with 100% pure copper winding and low-noise silicon steel core, fitted with blue V0 flame retardant transparent terminal safety cover to prevent electric shock and short circuits. Multiple VA power grades and customizable input/output voltage combinations are available, widely used in CNC lathes, plastic injection machines, packaging equipment and automated production control cabinets. Factory direct wholesale with OEM voltage & power customization for global electrical and machinery export orders.

BK series single-phase control transformer is a dedicated isolation step-down power supply for industrial machine control circuits. Built with 100% pure copper winding and low-noise silicon steel core, fitted with blue V0 flame retardant transparent terminal safety cover to prevent electric shock and short circuits. Multiple VA power grades and customizable input/output voltage combinations are available, widely used in CNC lathes, plastic injection machines, packaging equipment and automated production control cabinets. Factory direct wholesale with OEM voltage & power customization for global electrical and machinery export orders.

1. Product Overview

BK control transformer is a classic single-phase isolation transformer developed to provide safe low-voltage control power for all types of industrial machinery. It steps down high grid voltage to low safe voltage for control relays, solenoid valves, indicator lights and operating panels, creating electrical isolation to block grid interference and reduce electric shock hazards for equipment operators.
This transformer adopts thickened pure copper enameled wire windings and high-permeability cold-rolled silicon steel laminated cores to minimize heat generation and energy loss. All wiring terminals are covered by blue V0 flame retardant plastic protective housing to isolate live contacts. We offer a full spectrum of VA power ratings and flexible multi-winding voltage customization to match CNC machine tools, injection molding machines, food packaging equipment and complete automation switchgear. As a professional transformer manufacturer, we provide ready stock fast delivery, tiered bulk discount pricing and OEM private labeling for global machinery factories and electrical distributors.

2. Core Competitive Features

✅ 100% Pure Copper Enameled Wire Winding

High-purity thick copper coils deliver low internal resistance, low temperature rise and stable voltage output under continuous full load. Far longer service life and less voltage drop compared to aluminum winding transformers.

✅ Low-Loss Silicon Steel Laminated Core

Stacked cold-rolled silicon steel sheets cut no-load loss and electromagnetic noise, enabling quiet, stable long-term operation in workshop environments.

✅ Blue V0 Flame Retardant Terminal Safety Cover

Full-enclosed transparent blue insulating housing covers all live terminals, preventing accidental touch and short-circuit faults; V0 fire-resistant material meets global electrical safety standards.

✅ Fully Customizable Multi-Voltage Input & Output

Support custom primary input (220V / 380V) and secondary output (6V / 12V / 24V / 36V / 110V / 220V) multi-winding combinations to fit diverse control circuit demands.

✅ Complete Range of VA Power Specifications

Full power options: 25VA, 40VA, 63VA, 100VA, 160VA, 200VA, 250VA, 400VA, 630VA, 1000VA, 2000VA , 5000VA covering small lighting loads to heavy solenoid control systems.

✅ Multi-Layer High Insulation Structure

Insulating paper wrapped between primary and secondary windings for high voltage withstand isolation, effectively filtering power grid clutter interference to protect delicate control components.

✅ Galvanized Anti-Vibration Mounting Base

Yellow galvanized metal fixed base with pre-drilled mounting holes, firmly installs inside machine control cabinets and resists vibration from production line equipment.

✅ Factory Spot Stock & OEM Customization Support

Direct manufacturer supply without middlemen, abundant ready stock for fast shipment. Accept custom voltage ratios, power ratings and silk-screen brand logos for overseas bulk export orders.

3. Main Product Specifications

ItemTechnical Parameter
Model SeriesBK Single Phase Machine Tool Control Transformer
Winding MaterialThickened Pure Copper Enameled Wire
Core MaterialCold Rolled Silicon Steel Laminated Sheet
Terminal ProtectionBlue V0 Flame Retardant Transparent Safety Cover
Rated Power (VA)25VA / 40VA / 63VA / 100VA / 160VA / 200VA / 250VA / 400VA / 630VA / 1000VA / 2000VA / 5000VA
Custom Voltage RangeInput: 220V / 380V; Output: 6V/12V/24V/36V/110V/220V customizable
Core FunctionHigh-to-low voltage conversion + electrical isolation for control circuits
Mounting StructureYellow galvanized metal anti-vibration base with mounting holes
Typical ApplicationCNC lathe, injection molding machine, packaging automation control cabinet
Service SupportFactory wholesale, OEM voltage/power customization, export shockproof packaging

4. Wide Application Scenarios

  • CNC lathes, milling machines and machining center control power supply
  • Plastic injection molding, blow molding and extruder equipment control panels
  • Food packaging, filling, labeling and sealing machinery
  • Printing, textile and woodworking machine tool low voltage control power
  • Automated assembly lines, conveyor equipment solenoid valve power supply
  • Elevator auxiliary control cabinet lighting and signal isolation power
  • Small low-voltage distribution cabinet auxiliary isolation transformer

5. Installation & Operation Guide

  1. Secure the BK transformer inside the machine control cabinet using the pre-drilled holes on the galvanized metal base.
  2. Flip open the blue transparent terminal cover, connect mains high-voltage power cables to primary input terminals following printed voltage labels.
  3. Wire control loads (relays, lights, solenoid valves) to secondary low-voltage output terminals.
  4. Close the blue safety cover fully after wiring to isolate live terminals and eliminate safety risks.
  5. Apply mains power; the secondary side will output stable customized low voltage to power the machine’s control circuit.
  6. Reserve sufficient ventilation space around the transformer during long-term full-load operation to avoid overheating.

6. Frequently Asked Questions (FAQ)

Q1: What are the advantages of pure copper winding BK transformers?

A: Pure copper coils produce less heat, smaller voltage drop, more stable output and longer service life than aluminum winding transformers, ideal for 24/7 industrial machine operation.

Q2: Can I customize input and output voltages of this BK control transformer?

A: Yes, our factory designs custom multi-winding voltage combinations according to customers’ machine control circuit technical requirements.

Q3: What purpose does the blue terminal protective cover serve?

A: It is made of V0 flame retardant insulating plastic, fully covers live wiring terminals to prevent accidental electric shock and short-circuit faults during maintenance.

Q4: What industrial machinery uses BK control transformers?

A: Widely applied for CNC machine tools, plastic injection molding machines, packaging equipment, textile and printing machinery control cabinet power isolation.

Q5: Do you provide OEM customized BK transformers for export bulk orders?

A: We are direct transformer manufacturer with large spot stock, offering competitive bulk pricing, custom voltage ratios and private logo printing for global machinery wholesale customers.

7. Factory Wholesale Advantages

  1. In-house transformer production without intermediate distributors, competitive ex-factory pricing for large-volume overseas machinery export orders.
  2. Every finished BK transformer passes insulation withstand testing and 24-hour full-load aging inspection before delivery to guarantee stable long-term performance.
  3. Professional electrical engineering team provides VA power selection, voltage matching and cabinet installation technical support for machinery automation projects.
  4. Stable mass production capacity with short delivery lead times, shockproof anti-collision export carton packaging to prevent damage during sea transportation.
  5. Flexible OEM customization service including voltage adjustment, power specification modification and brand logo silk printing to meet different regional machinery market standards.

1. Product Overview

BK control transformer is a classic single-phase isolation transformer developed to provide safe low-voltage control power for all types of industrial machinery. It steps down high grid voltage to low safe voltage for control relays, solenoid valves, indicator lights and operating panels, creating electrical isolation to block grid interference and reduce electric shock hazards for equipment operators.
This transformer adopts thickened pure copper enameled wire windings and high-permeability cold-rolled silicon steel laminated cores to minimize heat generation and energy loss. All wiring terminals are covered by blue V0 flame retardant plastic protective housing to isolate live contacts. We offer a full spectrum of VA power ratings and flexible multi-winding voltage customization to match CNC machine tools, injection molding machines, food packaging equipment and complete automation switchgear. As a professional transformer manufacturer, we provide ready stock fast delivery, tiered bulk discount pricing and OEM private labeling for global machinery factories and electrical distributors.

2. Core Competitive Features

✅ 100% Pure Copper Enameled Wire Winding

High-purity thick copper coils deliver low internal resistance, low temperature rise and stable voltage output under continuous full load. Far longer service life and less voltage drop compared to aluminum winding transformers.

✅ Low-Loss Silicon Steel Laminated Core

Stacked cold-rolled silicon steel sheets cut no-load loss and electromagnetic noise, enabling quiet, stable long-term operation in workshop environments.

✅ Blue V0 Flame Retardant Terminal Safety Cover

Full-enclosed transparent blue insulating housing covers all live terminals, preventing accidental touch and short-circuit faults; V0 fire-resistant material meets global electrical safety standards.

✅ Fully Customizable Multi-Voltage Input & Output

Support custom primary input (220V / 380V) and secondary output (6V / 12V / 24V / 36V / 110V / 220V) multi-winding combinations to fit diverse control circuit demands.

✅ Complete Range of VA Power Specifications

Full power options: 25VA, 40VA, 63VA, 100VA, 160VA, 200VA, 250VA, 400VA, 630VA, 1000VA, 2000VA , 5000VA covering small lighting loads to heavy solenoid control systems.

✅ Multi-Layer High Insulation Structure

Insulating paper wrapped between primary and secondary windings for high voltage withstand isolation, effectively filtering power grid clutter interference to protect delicate control components.

✅ Galvanized Anti-Vibration Mounting Base

Yellow galvanized metal fixed base with pre-drilled mounting holes, firmly installs inside machine control cabinets and resists vibration from production line equipment.

✅ Factory Spot Stock & OEM Customization Support

Direct manufacturer supply without middlemen, abundant ready stock for fast shipment. Accept custom voltage ratios, power ratings and silk-screen brand logos for overseas bulk export orders.

3. Main Product Specifications

ItemTechnical Parameter
Model SeriesBK Single Phase Machine Tool Control Transformer
Winding MaterialThickened Pure Copper Enameled Wire
Core MaterialCold Rolled Silicon Steel Laminated Sheet
Terminal ProtectionBlue V0 Flame Retardant Transparent Safety Cover
Rated Power (VA)25VA / 40VA / 63VA / 100VA / 160VA / 200VA / 250VA / 400VA / 630VA / 1000VA / 2000VA / 5000VA
Custom Voltage RangeInput: 220V / 380V; Output: 6V/12V/24V/36V/110V/220V customizable
Core FunctionHigh-to-low voltage conversion + electrical isolation for control circuits
Mounting StructureYellow galvanized metal anti-vibration base with mounting holes
Typical ApplicationCNC lathe, injection molding machine, packaging automation control cabinet
Service SupportFactory wholesale, OEM voltage/power customization, export shockproof packaging

4. Wide Application Scenarios

  • CNC lathes, milling machines and machining center control power supply
  • Plastic injection molding, blow molding and extruder equipment control panels
  • Food packaging, filling, labeling and sealing machinery
  • Printing, textile and woodworking machine tool low voltage control power
  • Automated assembly lines, conveyor equipment solenoid valve power supply
  • Elevator auxiliary control cabinet lighting and signal isolation power
  • Small low-voltage distribution cabinet auxiliary isolation transformer

5. Installation & Operation Guide

  1. Secure the BK transformer inside the machine control cabinet using the pre-drilled holes on the galvanized metal base.
  2. Flip open the blue transparent terminal cover, connect mains high-voltage power cables to primary input terminals following printed voltage labels.
  3. Wire control loads (relays, lights, solenoid valves) to secondary low-voltage output terminals.
  4. Close the blue safety cover fully after wiring to isolate live terminals and eliminate safety risks.
  5. Apply mains power; the secondary side will output stable customized low voltage to power the machine’s control circuit.
  6. Reserve sufficient ventilation space around the transformer during long-term full-load operation to avoid overheating.

6. Frequently Asked Questions (FAQ)

Q1: What are the advantages of pure copper winding BK transformers?

A: Pure copper coils produce less heat, smaller voltage drop, more stable output and longer service life than aluminum winding transformers, ideal for 24/7 industrial machine operation.

Q2: Can I customize input and output voltages of this BK control transformer?

A: Yes, our factory designs custom multi-winding voltage combinations according to customers’ machine control circuit technical requirements.

Q3: What purpose does the blue terminal protective cover serve?

A: It is made of V0 flame retardant insulating plastic, fully covers live wiring terminals to prevent accidental electric shock and short-circuit faults during maintenance.

Q4: What industrial machinery uses BK control transformers?

A: Widely applied for CNC machine tools, plastic injection molding machines, packaging equipment, textile and printing machinery control cabinet power isolation.

Q5: Do you provide OEM customized BK transformers for export bulk orders?

A: We are direct transformer manufacturer with large spot stock, offering competitive bulk pricing, custom voltage ratios and private logo printing for global machinery wholesale customers.

7. Factory Wholesale Advantages

  1. In-house transformer production without intermediate distributors, competitive ex-factory pricing for large-volume overseas machinery export orders.
  2. Every finished BK transformer passes insulation withstand testing and 24-hour full-load aging inspection before delivery to guarantee stable long-term performance.
  3. Professional electrical engineering team provides VA power selection, voltage matching and cabinet installation technical support for machinery automation projects.
  4. Stable mass production capacity with short delivery lead times, shockproof anti-collision export carton packaging to prevent damage during sea transportation.
  5. Flexible OEM customization service including voltage adjustment, power specification modification and brand logo silk printing to meet different regional machinery market standards.

Data Download

LVMA low voltage selection manual

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