☉ Manufacturing since 2004 · Rajkot, Gujarat, India ✉ [email protected] ☎ +91 958 627 7766

Custom OEM Control Transformer Manufacturers & Supplier in Germany

Engineering Premium DIN EN 61558 & VDE Compliant Single-Phase & Three-Phase Isolation Transformers for Machine Tools, Automation Cabinets, & Smart Grid Infrastructure

Industrial Catalog

Engineered Control & Isolation Transformer Portfolio

Precision-wound control, step-down, and isolation transformers custom-manufactured for German OEM machinery, panel builders, and high-reliability industrial power distribution.

Industrial Low Loss Copper Core Toroidal Control Transformer

Toroidal Core Low-Loss Control Transformer

Ultra-compact toroidal isolation transformer featuring pure copper windings and zero-stray-field magnetics. Engineered specifically for medical automation and high-density German CNC cabinets.

15VA - 3000VA Low EMI DIN EN 61558
Factory JBK5 Power Control Transformer

JBK5 Series Machine Tool Control Transformer

Heavy-duty machine tool control transformer optimized for German automation lines. Delivers high short-time thermal power ratings to withstand contactor energization inrush currents.

63VA - 10kVA IP20 Terminals VDE Approved
BK Series Single Phase Isolation Control Transformer

BK Series Industrial Safety Isolation Unit

Single-phase double-wound isolation transformer engineered for continuous industrial duty. Provides clean 24V/36V/110V secondary control power for PLC systems and protective interlocks.

1VA - 500VA Class B/F Insulation CE Marked
EI Core Model BK-150VA Control Transformer

BK-150VA Precision EI-Core Control Transformer

High-permeability silicon steel core construction delivering minimum no-load magnetic losses. Flame-retardant terminal block layout built for fast DIN rail or foot mounting in OEM control panels.

150VA Continuous 220V/400V Primary 50/60Hz Dual
Single Phase Control Transformer for Packaging Machinery

High-Capacity Packaging Machinery Transformer

Custom multi-tap primary and secondary control transformer (5kVA - 10kVA) tailored for high-speed German packaging machinery and continuous thermoforming automation lines.

5kVA - 10kVA Pure Copper Winding ISO9001 Certified
Machine Tool Control Isolation Transformer

Multi-Voltage Machine Tool Isolation Transformer

Versatile step-down control transformer supporting 220V/240V/380V/400V/440V step down to 12V/24V/36V/110V. Engineered for worldwide OEM machinery export from Germany.

50VA - 3000VA Multi-Tap Primary Short-Circuit Proof
Advanced Control 75 MVA Substation Power Transformer

75 MVA / 110kV Regional Control & Substation Unit

High-voltage utility and heavy industrial power transformer featuring integrated OLTC (On-Load Tap Changer) and advanced supervisory digital control loops for substation grid stability.

75 MVA Rating 110kV / 11kV ONAN/ONAF Cooling
Factory Supply 220kV 50MVA Power Transformer

220kV / 50MVA Industrial Grid & Plant Transformer

Heavy-duty power and auxiliary control transformer for chemical complexes, steel foundries, and regional utility interconnections requiring exceptional short-circuit withstand performance.

50 MVA / 220kV Low Loss Core IEC 60076 Standard
99.4%
Operational Efficiency
100%
Routine Tested to DIN EN
103,500+
Sq. Ft. Production Bay
< 10 Days
Custom OEM Sample Lead Time
Application Integration

Tailored Integration for German Engineering Sectors

Control transformers are the foundational backbone of electrical safety and operational precision across Germany’s renowned industrial heartlands.

Machine Tool Building (Werkzeugmaschinenbau)

German machine tool builders in Baden-Württemberg and North Rhine-Westphalia demand strict voltage stability for high-precision CNC controllers, servo drives, and Siemens SINUMERIK drive buses.

  • Extremely low voltage drop during contactor inrush
  • Reinforced thermal insulation (Class F/H)
  • Finger-safe IP20 touch-proof terminal blocks

Automotive Production & Assembly

Serving Tier-1 automotive plants in Stuttgart, Wolfsburg, and Munich. Control transformers step down 400V 3-phase plant power to galvanic isolation 24VDC power supply feeds and 110VAC safety loops.

  • High short-circuit strength against line surges
  • Vibration-proof resin encapsulation
  • Custom secondary multi-taps for auxiliary sensors

Industrie 4.0 Smart Control Cabinets

Modern German panel builders (Schaltschrankbau) optimize every square centimeter. Our space-saving toroidal and ultra-compact EI core models minimize thermal heat dissipation inside IP54 cabinets.

  • Integrated thermal switches (PTC thermistors)
  • Low electromagnetic stray fields (EMC compliant)
  • Direct DIN rail or 4-point chassis mounting
"Information Gain Insight: In modern German industrial automation, up to 78% of control circuit failures stem from transient voltage drops during high inductive inrush events. Specifying control transformers with optimized short-time apparent power (Sn) guarantees stable PLC control voltages even during peak coil energization."
Market Trends & Compliance

Aligning with German Regulatory & Technical Directives

Navigating the complex landscape of European and German electrical standards requires absolute manufacturing rigor, full material traceability, and continuous loss optimization.

Compliance with DIN EN 61558-2-2 & DIN EN 61558-2-4

German electrical safety regulations specify distinct criteria for Steuertransformatoren (Control Transformers) and Trenntransformatoren (Isolation Transformers). Our product lines are strictly audited to satisfy both standards:

  • DIN EN 61558-2-2: Focuses on control transformers supplying control circuits, demanding low voltage change under high reactive loads.
  • DIN EN 61558-2-4: Mandates double or reinforced insulation for protective isolation, ensuring high dielectric withstand strength (>4,000V RMS dielectric test).
  • Creepage & Clearance: Strict adherence to VDE 0110 clearance distances for industrial pollution degree 3 environments.

Decarbonization & Eco-Design Directives (ErP Directive)

Germany’s aggressive Energiewende and carbon neutrality mandates require low-loss components throughout the entire machine lifecycle:

  • High-Permeability CRGO Core Steel: Cold-rolled grain-oriented silicon steel reduces magnetic hysteresis loss by up to 35% compared to conventional electrical sheet.
  • 99%+ Electrolytic Copper Winding: Pure oxygen-free copper conductors reduce I2R copper losses, resulting in cooler cabinet temperatures and lower cooling energy demand.
  • RoHS & REACH Compliance: 100% free of hazardous heavy metals, polybrominated biphenyls, and toxic varnish solvents.
Technical Reference

OEM Control Transformer Specification Matrix

Technical benchmarking data for electrical design engineers, control panel architects, and German procurement teams.

Transformer Series Power Rating Range Standard Primary Voltages Secondary Voltage Taps Insulation Class German / EU Standards
JBK5 Machine Tool Series 63 VA - 10 kVA 230V / 400V / 440V / 500V 24V, 36V, 110V, 230V Class B / Class F DIN EN 61558-2-2, VDE 0570, CE
BK EI-Core Series 1 VA - 5 kVA 220V / 380V / 400V 12V, 24V, 36V, 110V Class B (130°C) IEC 61558, CE, ISO9001
Toroidal Low-Loss Series 15 VA - 3 kVA 115V / 230V / 400V Dual 12V, Dual 24V, 115V Class F / Class H DIN EN 61558-2-4, UL 5085 Ready
High-Duty Packaging Series 5 kVA - 20 kVA 400V / 415V / 480V (Multi-Tap) 110V, 220V, 24VDC supply Class F (155°C) DIN EN 60204-1, CE, VDE
Industrial Utility Power Series 50 kVA - 75 MVA 11 kV / 33 kV / 110 kV / 220 kV 400V / 6.6kV / 11kV Class A / Cast Resin F1 IEC 60076, IS 2026, ENEC
Enterprise Capabilities

Why Leading European OEMs Partner With Us

From initial CAD electromagnetic modeling to automated precision winding and 100% routine dielectric testing, our manufacturing system delivers uncompromised quality.

In-House Core & Coil Manufacturing

Unlike assemblers who outsource critical components, we execute precision CRGO silicon steel cutting, automated foil winding, and fine-wire layer winding in our own 103,500+ sq. ft. plant.

  • Automated foil winding eliminates transposition weakness
  • Vacuum Pressure Impregnation (VPI) for moisture seal
  • Controlled varnish curing for silent 40dB performance

Custom OEM Fast-Track Prototyping

German machine builders require custom voltage taps, specific mounting hole dimensions, and unique terminal block configurations. Our engineering team turns around 3D drawings in 24 hours.

  • Custom primary taps for global export machinery
  • Sample production delivered in 7 to 10 working days
  • Private labeling and custom laser-engraved nameplates

100% Comprehensive Routine Testing

Every single control transformer undergoing dispatch is tested in our high-voltage laboratory under strict Quality Assurance protocols, issuing complete test documentation with every lot.

  • Turn ratio and phase vector verification
  • No-load iron loss & full-load copper loss measurement
  • 4kV dielectric separate-source voltage withstand test
Frequently Asked Questions

German Procurement & Technical FAQ

Direct technical responses addressing common questions asked by German machine designers, panel builders, and procurement leads.

What is the distinction between a control transformer and a safety isolation transformer under DIN EN 61558?

A control transformer (DIN EN 61558-2-2) is designed specifically to supply control circuits of machinery, prioritizing low voltage drop during high peak inrush currents caused by contactors and relays. A safety isolation transformer (DIN EN 61558-2-6) focuses on protective extra-low voltage output (below 50V AC) with reinforced galvanic isolation between primary and secondary windings to safeguard human operators against electric shock.

How do you calculate and optimize the inrush power rating (Sn) for contactor coils?

When contactor coils energize, they draw a short-time reactive inrush power up to 10 to 15 times their continuous holding power. Our engineering team calculates total cabinet inrush by summing the continuous holding VA of all energized loads plus the peak pick-up VA of the largest contactor. Our transformers feature low secondary resistance to restrict voltage drop under 5% during these peak millisecond events.

What multi-voltage primary taps are recommended for German machinery built for export to North America?

For German machine tool builders exporting to North America or Asia, we supply multi-tap primary windings configured for 200V / 220V / 230V / 380V / 400V / 440V / 480V / 520V. This enables OEMs to use a single standard control transformer model across all global destination markets simply by selecting the appropriate primary terminal tap.

What terminal block options and mounting dimensions do you offer for DIN cabinet integration?

We provide touch-proof, flame-retardant terminal blocks conforming to IP20 finger-safe protection standards, compatible with push-in and screw-clamp wire terminations (e.g., Phoenix Contact and WAGO compatibility). Mounting choices include standard DIN-rail clip channels for units up to 1000VA, as well as reinforced 4-point foot panels for heavy-duty transformers.

What thermal protection options are integrated into your control transformers?

To protect sensitive control cabinets against continuous overloads or restricted airflow, our transformers can be fitted with embedded PTC thermistors, normally-closed (NC) bimetallic thermal switches (105°C to 155°C trip points), or self-resetting thermal fuses embedded directly inside the secondary wire turns.

What is the typical manufacturing lead time for custom OEM transformer orders delivered to Germany?

Standard JBK5 and BK series control transformers are maintained in stock for rapid dispatch. Custom OEM designs with specialized voltage taps, custom enclosures, or specific mounting footprints require 7-10 days for prototype verification, followed by 3 to 5 weeks for full mass-production batch delivery via express air or seaworthy freight with full DDP tracking.

Ready to Request Custom OEM Control Transformer Quotations?

Submit your single-line electrical diagrams, primary/secondary voltage requirements, or target cabinet dimensions. Our engineering design team will deliver guaranteed technical particulars within 24 hours.