ODM HGL 3/4P Load Isolation Switch Factories, Company

The HGL  Load Isolation Switch provides reliable circuit isolation for  systems, supporting 63A-3150A loads with 750-1000V insulation and 6-12kV impulse withstand. Designed for industrial applications, this isolation switch operates at AC400-660V/50Hz across AC-21/22/23 utilization categories, featuring 10Ie making capacity and short-time withstand currents up to 50kA. With 5000-cycle mechanical endurance and compact 3P/4P designs (0.32-49kg), the HGL  switch ensures safe maintenance and load control. Its robust construction includes 3000-3500V dielectric strength and low operating torque (3.5-60N·m), making it ideal for renewable energy and power distribution systems.

Product Description

Type Designation

Type Designation 1 Type Designation 2
1Rear operation (omit if not required).
2Rear wiring (omit for front wiring).
3Auxiliary contact function code (see table), omit if not required.
4Direct viewing of contact window (omit if not required).
5External operation (omit for internal operation).
6Number of poles: 3-pole, 4-pole (3-pole+ switchable neutral pole).
7Rated current
8C Side Operation - Disconnector, Z Transfer - Disconnector
9Disconnector designation
111NO+1NC
222NO+2NC

Selection example: Disconnector with switchable neutral pole, rated current 630A, externally operated (Model: HGLZ-630A/4J)

Technical Parameters

Thermal Current Ith (A) 63A100A160A250A400A630A1000A1250A1600A2000A2500A3150A
Rated Insulation Voltage (Ui) 750V800V1000V
Dielectric Strength 3000V3500V
Rated Impulse Withstand Voltage (Uimp) 6kV8kV12kV
Rated Operational Voltage (Ue) AC400 / 660V
Utilization Category AC-21, AC-22, AC-23
Rated Operational Current Ie(A) 400V AC-21 6363160250400630100012501600200025003150
AC-22 63100160250400630100012501600200025003150
AC-23 508016025040063080010001250125020002500
Mechanical Endurance 500050005000300020001000

Product Display

Product 1 Product 2 Product 3 Product 4

Outline and Installation Dimensions

HGL-63~100A Series Dimensions

Dimensions 63-100A

HGL-125~630A Series Dimensions

Dimensions 125-630A
SpecificationLMZWQ
HGL-125A555.585190218
HGL-160A555.585190218
HGL-250A555.585190218
HGL-400A606.5130240270
HGL-630A606.5130240270

HGL-1000~3150A Series Dimensions

Dimensions 1000-3150A

Terminal Blocks Technical Reference

Terminal Blocks
Frequently Asked Questions (FAQ)
What is the primary function of the HGL Load Isolation Switch?
The HGL series is designed for safely isolating electrical circuits and switching loads in power distribution systems, ensuring a visible gap for maintenance safety.
Can I get both 3-pole and 4-pole versions of these switches?
Yes, the HGL series is available in 3-pole and 4-pole configurations. The 4-pole version includes a switchable neutral pole.
What are the operation options for these disconnectors?
We offer multiple operation modes including internal operation, external operation (through the cabinet door), and rear operation options to suit various installation requirements.
What is the maximum rated current for the HGL series?
The HGL series covers a wide range of current ratings, starting from 63A up to 3150A for heavy-duty industrial applications.
Are auxiliary contacts available?
Yes, you can specify auxiliary contact configurations such as 1NO+1NC or 2NO+2NC according to your system's monitoring needs.
What is the rated insulation voltage (Ui)?
Depending on the model size, the rated insulation voltage ranges from 750V for smaller units up to 1000V for larger high-capacity units.

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