3P Pole DIN Rail Switch Disconnector

Designed for 3-phase 400V power systems, our 3P Pole DIN Rail Switch Disconnector is a high-performance device for circuit isolation and control. It serves as a master switch in terminal combination gear, enabling reliable isolation and on/off operation, while offering leakage protection (without short-circuit protection).

Built with precision engineering and premium materials, it features:

●Widened D-type handle for easy operation

●Large terminals for secure wiring

●Thermosetting housing for enhanced safety

Widely applied in distribution cabinets, industrial control systems, railway electrics, and commercial power distribution, it ensures stable and safe circuit management.

NEW QUALITY UPGRADE & MORE DURABLE

HL30-125 disconnect switch has been fully upgraded in quality, with precision engineering applied throughout the entire production process—from material selection to final assembly, each component is strictly inspected.

Key highlights:

●Electrical life: 1500 times; Mechanical life: 8500 times

●PC thermosetting housing with excellent heat, impact resistance, and self-extinguishing properties

●High-conductivity copper terminals for stable current transmission

●Every unit undergoes rigorous aging, insulation, and mechanical performance testing before delivery, ensuring reliable long-term operation in demanding industrial and railway environments.

STRUCTURAL ANALYSIS

The HL30-125 railway switch disconnector adopts a compact and scientific structure, including 6 core components:

1.  WIDENED D-TYPE HANDLE : Ergonomic curvature conforming to human habits, improving operational comfort and intuitive on/off control.

2.  LARGE INTERFACE TERMINALS : High-quality copper terminals effectively prevent breakage and leakage, ensuring secure wiring and low loss.

3.  THERMOSETTING SHELL : PC flame-retardant material with heat resistance, impact resistance, and self-extinguishing properties, providing reliable safety protection.

4.  GUIDE RAIL BUCKLE : Convenient, fast, and easy snap-in operation for DIN35mm standard rail installation.

5.  WIRING TERMINAL PORT : High-conductivity copper wiring terminals, ensuring fast current output and strong overload capacity.

6.  SPLIT/MERGE SWITCH : Precise circuit split/merge control, supporting flexible circuit management and maintenance.

ERGONOMIC D-TYPE HANDLE FOR COMFORTABLE OPERATION

Equipped with a large D-shaped widened handle designed to fit human operating habits. The curved handle curvature improves operational comfort, reducing fatigue during frequent switching. The black high-strength handle is wear-resistant and durable, with clear on/off markings, making it easy to operate in various working environments.

WIDE TEMPERATURE ADAPTABILITY

The HL30-125 disconnect switch features excellent high and low temperature resistance, with an operating temperature range of -35°C to 70°C . It operates stably in extreme cold (alpine regions) and high-temperature (desert, industrial workshops) environments, ensuring reliable isolation and control performance in all climate conditions.

OUR PRODUCTS VS. OTHER PRODUCTS

CORE ADVANTAGE

1.ISOLATION & LEAKAGE PROTECTION : Reliable circuit isolation, effectively preventing leakage hazards and ensuring safe power use.

2.FLAME RETARDANT SHELL : High-strength PC thermosetting material, inhibiting combustion and preventing fires.

3.EASY INSTALLATION : Standard DIN35mm rail mounting, snap-in buckle design, quick and tool-free installation.

4.LONG SERVICE LIFE : 1500 electrical cycles and 8500 mechanical cycles, durable for long-term use.

5.WIDE APPLICATION RANGE : Suitable for 3-phase 400V systems, used as master switch in terminal combination gear.

6.COMPLIANT CERTIFICATION : Meets IEC60947-3 and GB14048.3 international standards, ensuring quality and safety.

STURDY & FLAME RETARDANT SHELL

The shell is made of high-performance PC flame-retardant thermosetting plastic, with a smooth and burr-free surface after fine processing. It features outstanding heat resistance, impact resistance, and self-extinguishing properties, effectively preventing fires caused by circuit abnormalities. The material is also anti-aging and corrosion-resistant, ensuring long-term safe use in various complex industrial and railway environments.

HIGH-CONDUCTIVITY TERMINALS & EASY WIRING

Equipped with large high-conductivity copper wiring terminals adopting pressure plate wiring board design. The large interface space accommodates thick wires, ensuring secure and firm wiring, effectively preventing breakage and leakage. The terminals have strong overload capacity, reducing power loss and ensuring stable current transmission.

STANDARD DIN RAIL MOUNTING

Designed for universal DIN35mm standard guide rail installation, with a convenient snap-in buckle. It is compatible with all standard distribution cabinets, electrical control boxes, and railway equipment, enabling fast, tool-free installation and disassembly, suitable for quick deployment in various power distribution scenarios.

PRODUCT PARAMETERS

SELECTION GUIDE

1. How to Choose Pole Numbers (P Number)?

•  1P : Single pole, 1 position, for 1 live wire (no neutral wire).

•  1P+N : Single-pole double-pole, 1 position, for 1 live + 1 neutral wire.

•  2P : Double pole, 2 positions, for 1 live + 1 neutral wire (or 2 live wires).

•  3P : Three pole, 3 positions, for 3 live wires (this product, suitable for 3-phase 400V systems).

•  4P : Four pole, 4 positions, for 3 live wires + 1 neutral wire.

2. How to Choose the Current?

Match the disconnect switch current rating to the copper wire cross-section and load power to avoid overheating or equipment damage. Refer to the table below:

Note: The disconnect switch must be matched with the wire and electrical power to avoid overheating, terminal burning, or equipment failure.

WIDELY USED

Our HL30-125 3P railway switch disconnector is widely used in:

•  RAILWAY SYSTEMS : Railway signal control, locomotive power distribution, and station electrical systems.

•  INDUSTRIAL EQUIPMENT : Factory workshop motor control, distribution cabinet master switch, and production line power control.

•  COMMERCIAL BUILDINGS : Office building, shopping mall, and hotel power distribution master switch.

•  RESIDENTIAL ENGINEERING : High-rise residential distribution box, multi-phase power supply control.

•  TERMINAL COMBINATION GEAR : Main switch in terminal combination electrical equipment, ensuring safe circuit isolation.

FAQ 

1. WHAT IS THE MAIN FUNCTION OF THIS 3P HL30-125 DISCONNECTOR?

It is mainly used as a master switch  in terminal combination gear, providing reliable isolation protection , leakage protection , and circuit on/off control. It does not have a short-circuit protection function, and is suitable for AC 50Hz power systems up to 400V, used in distribution circuits, motor control, and small power appliance lighting systems.

2. WHAT ARE THE MAIN SPECIFICATIONS OF THIS PRODUCT?

This is a 3P 63A model with a rated voltage of 400V~, electrical life of 1500 times, mechanical life of 8500 times, and operating temperature range of -35°C to 70°C. It supports 1P/2P/3P/4P optional pole numbers.

3. WHAT INSTALLATION METHOD DOES IT ADOPT?

It supports DIN35mm standard guide rail mounting  with a snap-in buckle design. Installation is quick, tool-free, and compatible with all standard distribution cabinets and electrical equipment.

4. DOES IT HAVE LEAKAGE AND LIGHTNING PROTECTION FUNCTIONS?

Yes, it is equipped with built-in leakage protection  and lightning protection  functions, effectively safeguarding circuits from leakage hazards and surge damage caused by lightning.

5. WHAT MATERIAL IS THE SHELL MADE OF, AND WHAT ARE ITS ADVANTAGES?

The shell is made of PC flame-retardant thermosetting plastic , featuring heat resistance, impact resistance, flame retardancy, and self-extinguishing properties. It is also anti-aging and corrosion-resistant, ensuring long-term safe use in harsh environments.

6. WHAT CERTIFICATIONS DOES THIS PRODUCT HAVE?

Our HL30-125 switch disconnector complies with IEC60947-3  and GB14048.3  international standards, ensuring quality, safety, and reliability in global markets.