Isolation Transformers · Machine Tool Control Transformers

BK Industrial Machine Tool Control Transformer (25 VA – 5000 VA)

BK series control transformers designed for machine tool control circuits, local workplace lighting, and signaling indicator lamps across 50/60Hz circuits up to 500V. Stepping down 380V/220V to 36V/24V/12V/6V.

Technical Specifications

Rated Capacity 25VA, 50VA, 100VA, 150VA, 250VA, 500VA, 1000VA, 2000VA, 5000VA
Primary Voltage 380V, 220V AC (Multi-tap input)
Secondary Voltage 36V, 24V, 12V, 6V AC
Frequency 50 Hz / 60 Hz
Installation DIN Rail or Base Plate Screw Mount
Model BK-25~50VA A: 56±0.5 mm, C: 53±2 mm, Bmax: 80 mm, Dmax: 74 mm, Emax: 85 mm, K×J: 4.8×9 mm
Model BK-100VA A: 64±0.5 mm, C: 65±2 mm, Bmax: 86 mm, Dmax: 84 mm, Emax: 92 mm, K×J: 4.8×9 mm
Model BK-150VA A: 84±0.5 mm, C: 80±2 mm, Bmax: 96 mm, Dmax: 97 mm, Emax: 110 mm, K×J: 5.8×11 mm
Model BK-200VA A: 84±0.5 mm, C: 87±2 mm, Bmax: 96 mm, Dmax: 105 mm, Emax: 110 mm, K×J: 5.8×11 mm
Model BK-250VA A: 84±0.5 mm, C: 90±2 mm, Bmax: 96 mm, Dmax: 110 mm, Emax: 110 mm, K×J: 5.8×11 mm
Model BK-300VA A: 90±0.5 mm, C: 98±2 mm, Bmax: 120 mm, Dmax: 120 mm, Emax: 125 mm, K×J: 7×13 mm
Model BK-400~500VA A: 90±0.5 mm, C: 104±2 mm, Bmax: 135 mm, Dmax: 128 mm, Emax: 125 mm, K×J: 7×13 mm
Model BK-700VA A: 110±0.5 mm, C: 97±2 mm, Bmax: 152 mm, Dmax: 125 mm, Emax: 147 mm, K×J: 7×13 mm
Model BK-1000VA A: 111±0.5 mm, C: 113±2 mm, Bmax: 170 mm, Dmax: 148 mm, Emax: 165 mm, K×J: 7×13 mm

Equipment Video Walkthrough 100% Tested

Watch 100% factory routine testing & quality control inspections.

Product Information

Status

Published

Product ID

XH-BK-CTRL

Last Updated

2026-09-24 08:45:14

Technical Highlights

  • Factory-direct China pricing with full IEC 60076 type test certification

Application Scenarios

  • CNC Machine Tools, Switchgear Control Panels, Safety Lighting, Signal Indicators

Key Features

  • Galvanic isolation for 50/60Hz AC circuits with voltages up to 660V
  • Pure copper conductor windings with heavy-duty thermal insulation
  • Custom voltage ratios (e.g. 220V to 380V, 480V to 220V, 415V to 380V)

Internal Component Engineering Anatomy

High-precision 3D engineering cutaway model illustrating the core, windings, insulation, conservator tank, and protection accessories.

Dry-type transformer internal 3D cutaway model
High-Grade Silicon Core
Electrolytic Copper Windings
Tap Changer System
Buchholz & Temp Sensors
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XinHuan BK Industrial Machine Tool Control Transformer (25 VA – 5000 VA) 2D AutoCAD General Arrangement Drawing Blueprint
Engineering Submittal Drawing

2D AutoCAD General Arrangement (GA) Drawing

Official XinHuan factory 2D vector General Arrangement drawing for BK Industrial Machine Tool Control Transformer (25 VA – 5000 VA). Includes front elevation view, top plan view, bushing center-to-center distances, mounting hole footprint, and complete vector group layout.

Full Dimensions ($L \times W \times H$)
Bushing Terminal Distances
Mounting Base Footprint
Vector Group & Title Block

Frequently Asked Questions

Request BK Control Transformer Selection Table

IEC 61558-2-2, CE, ISO 9001

Reinforced carton box, in stock for standard ratings

Related Markets & Resources

Standards & Compliance

IEC 61558-2-2, CE, ISO 9001

Packaging, Delivery & Service

Reinforced carton box, in stock for standard ratings

Request BK Control Transformer Selection Table

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