JBK3-400VA Machine Tool Control Transformer – Industrial & Marine Grade
Ensure stable and safe power distribution for your control circuits with the JBK3-400VA Control Transformer. Designed for rigorous industrial and marine environments, this 400VA transformer features high-purity copper windings, a low-loss silicon steel core, and robust thermal protection. Ideal for CNC machines, shipboard control panels, automation systems, and safety lighting circuits.
Product Overview
The JBK3-400VA Transformer is a premier solution for stepping down main supply voltages (380V/220V/440V) to safer control voltages (24V, 36V, 110V, etc.). Built to comply with IEC 61558 and GB 19212 standards, it offers exceptional reliability, low noise operation, and high efficiency.
Unlike standard aluminum-wound transformers, the JBK3 series from All-K Marine utilizes 100% Copper Windings, ensuring superior conductivity, better heat dissipation, and longer service life even under continuous heavy loads. Its compact, foot-mounted design allows for easy integration into existing electrical cabinets and marine console setups.
Copper offers approximately 60% higher conductivity than aluminum. In the JBK3-400VA, this means lower operating temperatures, reduced energy loss, and significantly higher resistance to thermal breakdown—critical for the demanding conditions of marine engine rooms and industrial factories.
Key Features & Advantages
- High-Efficiency Core: Constructed with high-quality cold-rolled silicon steel laminations to minimize iron losses, reduce humming noise, and prevent overheating.
- 100% Copper Windings: Primary and secondary coils are wound with premium enameled copper wire, ensuring maximum durability and load capacity.
- Multiple Voltage Taps: Flexible primary inputs (380V, 220V, 440V) and secondary outputs (24V, 36V, 42V, 110V, 220V) to suit global power standards and specific equipment requirements.
- Safety & Protection: Equipped with integrated thermal overload protection and reinforced insulation between primary and secondary circuits to prevent electric shock.
- Robust Construction: Heavy-duty metal casing with corrosion-resistant coating, suitable for vibration-prone environments like ships and heavy machinery.
- Easy Installation: Standard foot-mounting holes and clearly labeled terminal blocks for quick and error-free wiring.
- Compliance: Fully certified to meet CE, IEC 61558, and GB 19212 safety standards.
Technical Specifications
| Model Number | JBK3-400VA |
|---|---|
| Rated Capacity | 400 VA |
| Frequency | 50 Hz / 60 Hz |
| Primary Voltage (Input) | 380V, 220V, 440V (Customizable up to 690V) |
| Secondary Voltage (Output) | 24V, 36V, 42V, 110V, 220V (Single or Dual Output) |
| Winding Material | 100% Pure Copper (Cu) |
| Core Material | Cold-Rolled Silicon Steel (CRGO) |
| Insulation Class | Class B (130°C) or Class F (155°C) upon request |
| Protection Degree | IP20 (Standard Indoor), IP23 (Optional for Damp Environments) |
| Dielectric Strength | 2500V AC for 1 minute (No breakdown or flashover) |
| Temperature Rise | < 80K (at rated load) |
| Mounting Type | Foot Mounted (Horizontal) |
| Certifications | CE, ISO 9001, IEC 61558, GB 19212 |
Primary Applications
The JBK3-400VA is widely used in:
- Marine Electrical Systems: Control panels for pumps, winches, navigation lights, and communication equipment on ships and offshore platforms.
- Industrial Machinery: CNC lathes, milling machines, grinders, and injection molding machines.
- Automation & Robotics: PLC power supplies, sensor circuits, and control logic systems.
- Safety Lighting: Stepping down voltage for low-voltage safety illumination in hazardous or wet areas (36V/24V).
- Power Distribution: Isolation transformer for sensitive electronic equipment to filter noise and prevent surges.
Frequently Asked Questions (FAQ)
Yes, the JBK3-400VA is built with corrosion-resistant coatings and copper windings suitable for marine use. However, the standard IP20 rating is for indoor installation inside electrical cabinets. For direct exposure to salt spray or high humidity, we recommend requesting the IP23 version or installing the unit in a sealed, climate-controlled enclosure.
The JBK3 series is the industry standard for general machine tool control, offering a balance of performance and cost with foot-mounting. The JBK5 series typically features a more compact design, often with DIN rail mounting options and slightly improved efficiency. For most retrofits and new marine panels, JBK3 is the preferred choice due to its robustness and ease of mounting.
Absolutely. While we stock standard configurations (e.g., 380V to 220V/24V), we can customize the secondary windings to provide specific voltages such as 48V, 100V, or dual-output configurations to meet your specific vessel or machinery requirements. Please contact us for custom orders.
Yes, the JBK3-400VA is an isolation transformer. It provides galvanic isolation between the primary (high voltage) and secondary (low voltage) circuits, enhancing safety for operators and protecting sensitive control electronics from power surges and ground loops.
Request a Quote for Your Project
Upgrade your control system reliability with All-K Marine’s JBK3-400VA transformers. We offer competitive pricing for bulk orders, shipyard projects, and industrial OEMs.
Contact our electrical specialists: Get a Quote or email [admin@all-kmarine.com.cn].
