ABB GSH204 4-Pole Fuse Switch Disconnector with 100 kA Breaking Capacity and Fuse Protection

GSH204 ABB Disconnector with fuse protection Integrated safety isolation short circuit protection

Product Overview

ABB GSH204 is a 4-pole Fuse Switch Disconnector in the ABB GS series, integrating electrical isolation and short-circuit protection functions. This product is specially designed for industrial control cabinets, power distribution systems and motor terminal circuits. It provides reliable overload and short-circuit protection through built-in NH/gG type fuses, and also features visible breakpoints to ensure the safety of maintenance personnel during operation. It is widely applied in fields such as construction, energy, manufacturing and infrastructure.

Key features

✅ dual function integration

It simultaneously achieves electrical isolation (in compliance with safety standards) and short-circuit protection (through fuses), saving space and costs.
✅ high security design

The knife switch contacts are fully exposed at the OFF position, providing a visible break point and meeting the mandatory requirements of IEC 60204-1 for "safety isolation".
The operation handle is equipped with a locking hole and supports a padlock (LOTO) to prevent accidental closing.
✅ high judgment ability

In combination with NH/gG fuses, the short-circuit breaking capacity can reach 100 kA (400 V AC), far exceeding that of ordinary circuit breakers.
✅ modularization & flexible installation

Standard DIN rail or panel mounting (optional base plate)
Supports front wiring or rear wiring (depending on the installation method)
Compatible with ABB standard NH fuses (such as 10× 38mm or 14× 51mm)
✅ global certification compliance

Compliant with IEC/EN 60947-3 (disconnectors) and IEC/EN 60269 (fuses)
Passed international certifications such as CE, CCC and TUV

Basic parameters
Model: GSH204
Series ABB GS fuse combined disconnector
Pole number 4P (three-phase + neutral line)
Rated working voltage (Ue) : 400 V AC (50/60 Hz)
Rated insulation voltage (Ui) : 690 V AC
Rated working current (Ie) : 16A, 20A, 25A, 32A, 40A, 50A, 63A (depending on the fuse used)
Applicable fuse types: NH/gG fuses (dimensions: 10× 38mm or 14× 51mm)
The rated short-circuit breaking capacity is up to 100 kA (depending on the fuse specification).
Protection grade IP20 (front, after installation)
Installation method: DIN rail (35mm) or screw fixed to the panel
Wiring method: Screw terminal. Supported wire cross-section: 2.5-25 mm² (copper wire)
Operation mode: Manual operation handle (with ON/OFF indicator)
The mechanical life is ≥ 1,000 operations
Operating temperature range: -25°C to +55°C
Dimensions (width × height × depth) ≈ 90mm × 105mm × 85mm (with slight variations depending on the current rating)
The weight is approximately 0.6 kg

Typical application scenarios
Industrial automation
It is used for the starting, stopping and protection of medium-voltage motors, such as water pumps, fans, compressors and other equipment.
Power transmission and distribution
Load switching and protection in scenarios such as medium-voltage switch cabinets and substations.
Energy and infrastructure
Auxiliary control of photovoltaic inverters, pumping stations of water treatment plants, and backup power switching systems.
OEM equipment integration
As a standard component embedded in the OEM control cabinet, it enhances the reliability of the entire machine.

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