Product Description
Power factor correction is an essential solution for low-voltage distribution systems that need faster capacitor switching, lower reactive power loss, and more stable electrical performance. This TSC series dynamic reactive power compensation switching regulator is designed for quick switching of parallel capacitors in 50/60Hz low-voltage power distribution systems with rated working voltage of 400V or 230V. The main circuit adopts anti-parallel thyristor modules, while the triggering circuit, synchronization circuit, and control circuit work together to complete fast capacitor input and removal after receiving the switching signal from the controller. Compared with traditional electromagnetic contactors used in compensation cabinets, this electronic switching structure helps reduce inrush current, overvoltage, sparks, and operating noise, making it a reliable power factor correction component for systems that require frequent switching and quick response.
Our factory develops this product for panel builders, compensation cabinet manufacturers, electrical project contractors, distributors, and industrial users who need a more stable solution for dynamic reactive power compensation. In real applications, customers are not only buying one electrical component; they need a product that can match capacitors, controllers, wiring layouts, heat dissipation requirements, and long-term cabinet operation. This power factor correction regulator is equipped with overheat protection, supports frequent operation, and is designed for easier installation, wiring, and maintenance. With years of manufacturing experience in capacitor switching contactors, reactive power compensation components, intelligent capacitor composite switches, and automatic reactive power compensation controllers, we focus on practical field use rather than only catalog parameters. For overseas buyers and agents, this product can be supplied as a key switching component or combined with capacitors, controllers, and related modules to form a more complete reactive power compensation package.
Specifications
| Product Type | TSC Series Reactive Power Compensation Switching Regulator |
| Application System | Low-voltage dynamic reactive power compensation device |
| Rated Voltage | 400V / 230V |
| Rated Frequency | 50/60Hz |
| Control Capacity | 400V common compensation: 10Kvar-70Kvar; 230V split compensation: 3Kvar-20Kvar |
| Model Reference | TSC-0.4-20-△ |
| Maximum Controlled Capacitor Capacity | 20Kvar |
| Control Terminal Voltage | DC12V |
| Control Terminal Current | 5mA |
| Discharge Circuit | Built-in discharge circuit, discharge time less than 10 seconds, peak value 50V |
| Switching Method | Thyristor fast conduction / cut-off |
| Main Features | No inrush current, no overvoltage, no sparks, low noise, frequent operation, overheat protection |
| Ambient Temperature | -5℃ to +40℃, average temperature within 24h not higher than +35℃ |
| Altitude | Not more than 2000m |
| Main Terminal Wiring Capacity | Maximum 25mm² insulated wire, terminal lugs recommended |
| Recommended Protection Device | NGT or NTOO fast fuse |
| Recommended Fuse Rated Current for TSC-0.4-20-△ | 40A |
| Installation Dimensions | A/B/C/F/H*/G/D/E = 115/190/165/80/117/162/35/178mm |
| Installation Method | Mounted on the compensation device installation plate or frame rail |
Applications
Low-voltage compensation cabinets
Used inside complete compensation cabinets to achieve fast capacitor switching together with dynamic controllers and capacitor banks.
Industrial power distribution systems
Suitable for factories, workshops, production lines, and equipment-intensive facilities where power factor correction is required to reduce reactive power loss.
Electrical engineering projects
Used by contractors and panel builders as a dynamic switching unit in low-voltage distribution and reactive power compensation projects.
Commercial building power systems
Suitable for shopping malls, office buildings, and other facilities with frequently changing load conditions.
Capacitor bank control systems
Applicable for both common compensation and split compensation capacitor groups, supporting three-phase synchronous or phase-separated switching according to system design.
Factory Strength
Our factory has been engaged in the electrical manufacturing field since the early 1990s, with long-term focus on capacitor switching contactors and reactive power compensation components. The factory covers more than 3,000 square meters and has an R&D team, quality control personnel, and stable production capacity of around 5,000 units per month. For customers who purchase power factor correction products in bulk, this manufacturing foundation helps ensure more stable supply, easier repeat orders, and better project continuity.
We are equipped with production lines, plastic injection molding machines, automatic wire laying machines, computer-controlled wire stripping machines, punch presses, AC contactor contact parameter testers, action characteristic verification benches, resistance testers, power frequency withstand voltage test benches, and coil testers. For products used in reactive power compensation systems, stable assembly, accurate wiring, reliable electrical response, and safe insulation are especially important. Our production process is arranged around these practical requirements, so distributors and project customers can receive products that are easier to install, test, and resell in their local markets.
Quality Control
Our factory has ISO9001 quality management system certification and CCC National Compulsory Product Certification. During production, we use regular inspection methods and carry out 100% inspection before packing. Third-party inspection is also accepted when required by customers or project buyers. For this power factor correction regulator, inspection focuses on appearance, assembly quality, terminal connection, control response, insulation safety, switching reliability, product labeling, and packing condition.
Because this regulator is used for fast switching of parallel capacitors, the final performance is closely related to both product quality and installation conditions. That is why we clearly specify the working temperature, altitude limit, wiring requirements, fuse selection, installation direction, heat dissipation space, and capacitor discharge recommendations. We believe that reliable electrical products should be delivered with clear technical guidance. This helps panel builders reduce installation mistakes and helps agents provide more professional support to their customers.

After-Sales Service
We provide pre-sales selection support, order progress follow-up, and after-sales technical assistance. Before purchase, we can help customers choose suitable models according to system voltage, compensation capacity, control method, and cabinet design requirements. We can also provide wiring guidance, installation information, and technical data for project communication. OEM/ODM service is available, including discussions on casing color, logo, control voltage, and other project-based customization needs.
During production and delivery, we can provide order tracking and progress updates when needed, including photos or videos during production. After delivery, our after-sales team can provide remote technical support for installation, commissioning, and troubleshooting. The product warranty period is one year. If goods are damaged after arrival, we will communicate according to the actual situation and provide a reasonable handling solution. Our goal is to help agents and overseas buyers sell power factor correction products with stronger technical confidence, not only with a price list.
FAQ
Q1: Can this power factor correction regulator replace traditional contactors in compensation cabinets?
A1: Yes. It is designed for fast switching of parallel capacitors and can be used as an alternative to electromagnetic contactors in dynamic reactive power compensation systems, especially where frequent switching, lower noise, and reduced inrush current are required.
Q2: Can samples or customized products be provided before mass production?
A2: Yes. Samples can be provided before mass production. OEM/ODM customization is supported, and production can be arranged according to technical drawings or prototypes. Custom development cost and lead time depend on the actual project requirements.
Q3: How are products packed for international shipping?
A3: Products are normally packed in paper boxes first and then placed into export-grade outer cartons. For overseas orders, packaging can be arranged according to transportation method and customer requirements to reduce the risk of damage during long-distance shipping.
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