Product Description
300A DC Terminal Block for High-Current Energy Storage Connections
The SL-300A-C 300A DC Terminal Block is designed for electrical connection applications in battery energy storage equipment, DC power distribution cabinets and industrial power conversion systems.
With a rated current of 300A and a rated voltage of 600V DC, this square terminal block provides a connection interface for compatible high-current electrical assemblies.
The SL-300A-C features a double-threaded terminal configuration, allowing electrical connections to be arranged on opposite sides of a mounting panel. Its brass conductive components and insulated square housing support integration into suitably designed electrical enclosures.
Available in red and black, the terminal block offers different housing color options for equipment manufacturers, system integrators and electrical panel builders.
Key Features of the SL-300A-C Terminal Block
1. Double-Threaded Connection Design
The SL-300A-C features a double-threaded terminal structure, distinguishing it from the single-threaded SL-300A-A model.
This connection arrangement provides threaded interfaces on both sides of the terminal assembly. It can be considered for equipment requiring electrical connections through a panel or enclosure wall.
The final connection method should be selected according to compatible cable terminals, fastening hardware and installation requirements.
2. 300A High-Current Connection
The terminal block is specified for a rated current of 300A, making it an option for compatible DC electrical equipment.
Its 600V DC rating allows equipment designers to evaluate the product for suitable battery and power distribution applications.
For high-current systems, conductor cross-section, operating temperature, cable termination quality and electrical contact conditions should be considered during product selection.
3. Brass Conductive Components
The SL-300A-C uses H62 brass conductive components according to the manufacturer’s general product documentation.
H62 brass provides electrical conductivity and mechanical strength for terminal connection hardware.
Proper conductor termination and suitable fastening procedures help maintain reliable connections in industrial electrical assemblies.
4. Insulated Housing and Protective Cover
The terminal block incorporates PA66 insulating components that provide mechanical support and electrical separation around the conductive assembly.
The square housing configuration helps organize terminal positions within electrical panels, while the protective cover provides physical separation around the connection area.
Actual material grades and insulation performance should be verified against the model-specific technical documentation.
5. Square Panel-Mounting Configuration
The SL-300A-C is designed for installation on suitable equipment panels or enclosure surfaces.
Its square mounting arrangement provides a defined position for the electrical connection interface within battery cabinets and power distribution equipment.
Before installation, engineers should verify the mounting-hole layout, panel opening dimensions, connection clearances and fastening requirements.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | SL-300A-C |
| Product Name | 300A DC Terminal Block |
| Rated Current | 300A |
| Rated Voltage | 600V DC |
| Connection Structure | Double-Threaded |
| Conductive Material | H62 Brass |
| Insulation Material | PA66 |
| Housing Colors | Red / Black |
| Mounting Method | Panel Mounting |
| Thread Specification | Refer to Product Drawing |
| Mounting Dimensions | Refer to Product Drawing |
Product Dimension Drawing

Applications of the 300A DC Terminal Block
Battery Energy Storage Cabinets
The SL-300A-C can be considered as a panel-mounted electrical connection component in compatible energy storage cabinets and battery power distribution assemblies.
DC Power Distribution Systems
This terminal block provides a connection option for DC power distribution equipment requiring appropriately rated conductor terminals.
Inverter and Power Conversion Equipment
Its double-threaded configuration may be incorporated into suitable inverter equipment and industrial power conversion systems.
Industrial Electrical Enclosures
The SL-300A-C can also serve as an electrical terminal component in industrial power supply cabinets, testing equipment and other compatible high-current installations.
Why Choose the SL-300A-C 300A DC Terminal Block?
The SL-300A-C combines a 300A current rating, double-threaded connection structure, brass conductive components and an insulated square housing.
For battery equipment manufacturers, inverter suppliers and electrical panel builders, it provides a connection option for compatible DC power systems.
The double-threaded arrangement also offers an alternative to the single-threaded SL-300A-A model, allowing manufacturers to select the configuration most appropriate for their electrical equipment.
FAQ
What is the rated current of the SL-300A-C terminal block?
The SL-300A-C has a rated current of 300A and a rated voltage of 600V DC.
What is the difference between SL-300A-A and SL-300A-C?
The SL-300A-A has a single-threaded connection configuration, while the SL-300A-C features a double-threaded design.
Can the SL-300A-C be used in battery energy storage systems?
Yes. It is intended for compatible battery storage and DC power distribution applications, subject to the system's electrical and installation requirements.
What colors are available for this 300A square terminal block?
The manufacturer's supplied product images show red and black housing options.
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