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Introducing HR18 Series Fuse‑Disconnector: Reliable Fused Isolation Solution for Low‑Voltage Distribution
Introducing HR18 Series Fuse‑Disconnector: Reliable Fused Isolation Solution for Low‑Voltage Distribution
Launched Multifunctional Switching Power Supply
Launched Multifunctional Switching Power Supply
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Master The Key To Power Supply Protection - Fuse
Mutual Inductor
Mutual Inductor
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Fuse Disconnect Switch
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Disconnecting Switch

Introducing HR18 Series Fuse‑Disconnector: Reliable Fused Isolation Solution for Low‑Voltage Distribution

2026-08-24

With the continuous development of the electric power industry, the isolation Switch is an indispensable part of the power distribution network, and its functions have become increasingly prominent.  Isolating switches are widely used in power distribution networks to isolate power supplies and switching circuits to ensure safe and reliable operation of the power system.  The importance of the isolation switch is self-evident, and its performance and characteristics are crucial to the stable operation of the power system.

3 - 副本21

For low‑voltage power distribution systems requiring safe isolation plus built‑in short‑circuit protection, our HR18 Series Fuse‑Disconnector delivers a compact, all‑in‑one solution for panel builders, system integrators and industrial end‑users。

Combining the functions of load switch, disconnector and fuse protection in one unit, HR18 is widely used as main incoming switch, emergency break switch and circuit protective device in distribution cabinets, motor control centres and industrial power networks with high short‑circuit current levels.

Core Product Highlights

  1. Integrated fuse‑isolation designNH/NT‑type Fuse Links are fitted inside the rotating handle cover. When opened, it provides sufficient clear isolation distance to meet IEC disconnector safety requirements for maintenance work. The transparent cover allows visual inspection of fuse status without full disassembly。
  2. Robust arc‑extinguishing & full flame‑retardant housing Base, cover and arc‑chamber adopt high‑performance arc‑resistant flame‑retardant plastic. Multi‑sheet arc‑quenching grids effectively suppress electric arcs during load switching, extending contact service life and improving operational safety。
  3. Wide rating coverage
  • Rated insulation voltage: 1000V
  • Rated operational voltage: AC up to 690V
  • Conventional thermal current: 160A‑630A
  • Frequency: 50Hz /60Hz optional
  • Poles: 2P, 3P, 4P available
  • Installation: Fixed‑type or draw‑out plug‑in mounting options
  • Optional auxiliary contacts for remote ON/OFF status signal feedback.
  1. International compliance Manufactured and tested to IEC 60947‑3 & GB/T 14048.3, with CE certification. Suitable for global export projects across Asia, Africa, Middle‑East and CIS markets。

Typical Application Scenarios

‑ LV distribution panels & main power incomer ‑ Factory motor distribution circuits ‑ Generator & backup power systems ‑ Commercial building power supply ‑ Mining & light‑industry cabinet projects

Note: HR18 is designed for infrequent manual switching. It shall not be used for direct frequent starting‑stopping of individual motors.

Ordering Tips

When placing RFQ for HR18, kindly specify:

  1. Rated thermal current (160A /250A /400A /630A)
  2. Number of poles (2P‑3P‑4P)
  3. Mounting type (fixed or plug‑in)
  4. Need auxiliary contacts Yes / No
  5. Matching NH fuse‑link current rating

If you require datasheets, dimension drawings or quotation for HR18 series, contact our sales team.

Email：dhecn-intl@dhecn.com