Basic Info
The FKJX wall mounted low-voltage power control box is suitable for three-phase three wire, three-phase four wire, and three-phase five wire systems with a load current of no more than 250A at 50Hz, 500V, and below. It controls the distribution system, provides leakage protection, and provides overload, short circuit, phase loss protection, and various controls for motors. This box has a reasonable design, small size, beautiful appearance, safe and reliable use, and is widely used in metallurgy, petrochemicals, medical and health, aviation, residential areas, shopping malls, schools, and urban renovation.
Customer reviews
Robert · Quality Control Supervisor
The FKJX control box has significantly contributed to improving our product quality metrics. Its stable output and precise parameter control have reduced variability in our manufacturing processes. I particularly appreciate the data logging capability, which helps us track performance trends and identify potential issues before they affect production. The dust-proof and moisture-resistant design has held up exceptionally well in our challenging workshop environment.
Emily · Procurement Specialist
We evaluated several control boxes before selecting the FKJX model, and it has exceeded our cost-performance expectations. While the initial price was slightly higher than some competitors, the long-term savings in maintenance and energy efficiency have more than justified the investment. The manufacturer's responsive customer support and readily available spare parts network have made the purchasing experience particularly positive for our organization.
Product Description
Operating Environmental Conditions:
- Altitude not exceeding 2000 meters;
- Ambient air temperature not exceeding +40℃ and not lower than -25℃;
- Monthly average relative air humidity not more than 40% at +20℃;
- Locations free from severe vibration and impact;
- Non-explosive hazard locations, with no gases or conductive dust in the medium that corrode metals or damage insulation.
Structural Features:
- Multiple series and structures, including welded type, split type and assembled type; available in outdoor and indoor versions;
- Various double-door structures for safe and reliable operation;
- Multiple protection grades: IP20, IP40, IP43, IP54 and IP65, to meet the requirements of different sites.
Conformity Standards:
This product complies with IEC 60439-1:1992 Low-voltage switchgear and controlgear assemblies — Part 1: Type-tested and partially type-tested assemblies.
This product complies with GB 7251.1-1997 Low-voltage switchgear and controlgear assemblies — Part 1: Type-tested and partially type-tested assemblies.
Ordering Instructions
Please specify the following when placing an order:
- Model;
- Installation method;
- Structural type and overall dimensions;
- System diagram and control schematic diagram.
- Special requirements shall be settled through negotiation.
Installation Diagram

Frequently Asked Questions (FAQ)
Q:What industries commonly use FKJX control boxes?
A:FKJX control boxes are widely used in manufacturing, water treatment, energy (solar/wind), and logistics automation due to their robust housing and reliable circuit protection capabilities.
Q:What maintenance does the FKJX control box require?
A:1. Quarterly dust cleaning. 2. Annual terminal tightening. 3. Check seal integrity every 6 months. 4. Replace cooling fans every 2 years. Always power off before maintenance.
Q:Can the FKJX control box integrate with PLC systems?
A:Yes, the FKJX supports standard PLC interfaces (RS485/Modbus) and has DIN-rail mounting slots. Its 24VDC/220VAC dual-power design ensures compatibility with most industrial control systems.