DNH11 Fuse Switch Disconnector 160A 400A Isolator Switch Supplier

Rated Working Voltage (Ue):

AC 415 V

Rated Current (Ie):

160 A / 400 A

Rated Insulation Voltage (Ui):

AC 1000 V

Fuse Size:

NH00 / NH1 / NH2

Rated Impulse Withstand Voltage (Uimp):

12 kV

Rated Short-Time Withstand Current:

10 kA for 1 second

Rated Frequency:

50 / 60 Hz

Poles:

1P / 2P / 3P / 4P

Usage Category (with fuse):

AC-22B

Wiring Size:

16–95 mm² / 95–185 mm²

External Dimensions:

315 × 92 × 192.5 mm / 205 × 65 × 133.5 mm

Protection Grade:

IP23

Certification Download PDF Contact Us

Description

Description
Technical Parameter

Description

The GRL DNH11 Fuse Switch Disconnector is a robust and reliable switching solution for low-voltage power distribution systems. The switch combines the functions of isolation and fuse protection in a single compact unit. Its NH-type fuse link compatibility ensures fast fault clearing, safeguarding both equipment and personnel from the effects of overcurrent and short-circuit conditions.

The DNH11 series features a high-strength insulated housing and an arc-extinguishing design, allowing it to handle demanding industrial applications with confidence. It supports multi-pole configurations, enabling flexible integration into various power systems. When installed outdoors, it can be safely operated with an insulated rod, making it ideal for utility networks and remote installations.

Engineered to meet global electrical standards, this fuse switch disconnector delivers stable performance in harsh conditions and provides long-term reliability in critical infrastructure and industrial environments.

Technical Parameter

Specifications	DNH11-160	DNH11-400
Rated working voltage (Ue)	AC 415 V	AC 415 V
Rated current (Ie)	160 A	400 A
Rated insulation voltage (Ui)	AC 1000 V	AC 1000 V
Fuse Size	NH00	NH1 / NH2
Rated impulse withstand voltage (Uimp)	12 kV	12 kV
Rated short-time withstand current	10 kA / 1s	10 kA / 1s
Rated frequency	50/60 Hz	50/60 Hz
Poles	1P / 2P / 3P / 4P	1P / 2P / 3P / 4P
Usage category (with fuse)	AC-22B	AC-22B
Wiring size	16–95 mm²	95–185 mm²
External dimensions (mm)	315 × 92 × 192.5	205 × 65 × 133.5
Protection grade	IP23	IP23

DNH11 Fuse Switch Disconnector Features

Reliable Outdoor Performance – IP23 protection ensures safe operation in outdoor and semi-outdoor environments, resisting dust and water spray.

Flexible Pole Configurations – Available in single, double, triple, or four-pole arrangements to suit different distribution system designs.

Mechanical Fuse Monitoring Option – Allows quick visual inspection of fuse status, reducing maintenance time and improving operational efficiency.

Arc-Extinguishing Safety Design – Minimizes arcing during load switching, extending service life, and ensuring operator safety.

Industrial-Grade Durability – Maintains consistent performance in a wide temperature range and at altitudes up to 3000 meters.

Compatible with Multiple Fuse Sizes – Supports NH00, NH1, and NH2 fuses, enabling easy adaptation to different load requirements.

DNH11 Fuse Switch Disconnector Application Scenarios

The DNH11 Fuse Switch Disconnector is suitable for a variety of industrial and utility installations, including:

Power Distribution Networks – Protection and isolation in feeder lines, substations, and distribution boards.
Manufacturing Plants – Reliable load isolation for machinery and process equipment in sectors such as chemical, metallurgical, and heavy manufacturing.
Utility and Infrastructure Projects – Used in transport systems, water treatment plants, and public facilities where safe switching is essential.
Renewable Energy Installations – Provides AC-side protection for solar farms, wind turbines, and energy storage systems.
Remote and Agricultural Systems – Outdoor operation with an insulated rod makes it ideal for rural or remote installations.