4P Pole DIN Rail Switch Disconnector

Our 4P Pole DIN Rail Switch Disconnector is a high-performance circuit isolation and control device dedicated to 3-phase 4-wire 400V power systems. As a master switch in terminal combination gear, it provides reliable circuit isolation, on/off control, and leakage protection (note: no short-circuit protection function). Adopting precision engineering and high-quality materials, it features a widened D-type handle for comfortable operation, large interface terminals for secure wiring, and a thermosetting shell for maximum safety. It is widely used in distribution cabinets, industrial equipment control, railway electrical systems, and commercial power distribution, ensuring stable and safe circuit management.

NEW QUALITY UPGRADE & MORE DURABLE

Our HL30-125 disconnect switch has undergone comprehensive quality upgrades. Precision-engineered from the inside out, every component is strictly inspected from material selection to final assembly. It boasts 1500 times electrical life  and 8500 times mechanical life , tested to meet industry standards. The PC thermosetting shell offers excellent heat resistance, impact resistance, and self-extinguishing performance, while high-conductivity copper terminals ensure stable current transmission. Each product passes strict aging tests, insulation tests, and mechanical performance tests before delivery, enabling long-term stable operation in harsh industrial and railway environments.

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 4-wire 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.

SIX CORE SELLING POINTS

•  ISOLATION PROTECTION : Effective circuit isolation to prevent leakage and short-circuit risks.

•  LIGHTNING PROTECTION : Built-in lightning protection function, safeguarding circuits from surge damage.

•  FLAME RETARDANT HOUSING : High-strength PC material, heat-resistant and self-extinguishing, ensuring safety.

•  SAFE INSULATION : Excellent insulation performance, preventing electric shock hazards.

•  WIDENED HANDLE : Ergonomic design, comfortable and effortless operation.

•  FULL SPECIFICATIONS : 1P/2P/3P/4P optional models, 63A rated current, meeting diverse application needs.

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.

•  4P : Four pole, 4 positions, for 3 live wires + 1 neutral wire (this product, suitable for 3-phase 4-wire 400V systems).

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.

FAQ 

1. WHAT IS THE MAIN FUNCTION OF THIS 4P 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 4P 63A model with a rated voltage of 400V~, utilization category AC-22A, 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.