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Your Professional Indoor Disconnect Switch Supplier

Our goal is to become your true partner in the field of indoor disconnect switch China. Granso produces a broad, tailored, comprehensive range of metal parts. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

600 Amp 3 Phase Fused Disconnect
600 amp 3 phase fused disconnect ensure on-load connection and disconnection of circuits, providing reliable overcurrent and short-circuit protection.
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200 Amp Fused Disconnect
200 amp fused disconnect is suitable for AC 50/60Hz, rated working voltage 400V and below, and rated current up to 630A.
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High Voltage Isolator Switch
GN27-40.5(C)(D) type high voltage isolator switch, suitable for indoor installations with a rated voltage of 40.5kV and a three-phase AC frequency of 50Hz. Available current ratings are 400A,...
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Indoor Disconnect
Indoor AC disconnect switches are suitable for AC 50Hz power systems with a rated voltage of 12kV and below. They are equipped with a manual operating mechanism and are used for switching...
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Indoor Disconnect Switch
The GN30-12 series indoor rotary high-voltage disconnecting switch is a new type of rotary contact knife-type disconnecting switch. Its main structure consists of two sets of insulators and...
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Fuse Switch Disconnect
Fuse switch disconnect are suitable for AC 50Hz, rated voltage up to 660V, and DC voltage up to 440V. They are low-voltage power distribution components integrating isolation, switching, and...
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Load Break Isolator
The GRGL series load disconnect switches are suitable for AC 50Hz, rated voltage up to 660V, and DC rated voltage up to 440V, with a rated current range of 125A-1600A.
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High Voltage Disconnect Switch
This GN24-12D high-voltage disconnect switch is an indoor high-voltage disconnect switch with a grounding switch. It is an upgraded version of the GN19 series (with added grounding function).
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Load Disconnect
The most significant difference between this series of load disconnect switches and other disconnect switches is their transparent housing design.
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Load Break Disconnect
Four-pole load break disconnect is a key electrical component in low-voltage power distribution systems.
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Load Disconnect Switch
A load disconnect switch, which is suitable for AC 50Hz with a rated voltage up to AC690V and a rated thermal current up to 3150A, is a combination of a fuse and an isolating switch.
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60 Amp 3 Phase Fused Disconnect
60 amp 3 phase fused disconnect， designed for AC 50Hz operation, rated voltage up to AC690V, combine the functions of a fuse and a switch, disconnecting power in the event of an overload or short...
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Why Choose Us

Quality control:

We rigorously control every process, ensuring our products comply with relevant standards such as GB7251.1, GBT/23359, and JB/T9661.

Our team:

We have a professional team of over 200 employees, including over 25 professional technicians.

Our services:

In the pre-sales stage, our team of experts will recommend the most suitable products according to the needs of customers and provide detailed technical consultation. During the sales period, we ensure timely delivery and provide installation guidance. For after-sales, we provide long-term technical support, warranty services and spare parts to help customers maximize the use of products and get reliable maintenance during use.

Advantages of Indoor Disconnect Switch

Monitoring of higher loads: Disconnect switches are frequently employed in systems and operations that carry an exceptionally high load. Large-scale and heavy-duty equipment are prime examples of such systems. A disconnect has another advantageous features. They naturally consist of a high aic or “amps interrupting capacity.”

Safest option available: In an event of a flaw or a slight disturbance in the electrical system, the fused disconnect will immediately detect the issue. The fuse breaks the circuit if a fault in an appliance causes too much current to flow, opening the circuit and switching off the power supply to the system that is under its control.

Equipment protection: In addition to promoting user safety, disconnect switches can also protect your valuable electrical equipment from damage. Electrical equipment can suffer damage due to overloads, short circuits, or other faults in the system.

Facilitating maintenance and repair: If you need to repair, service, or upgrade components of an electrical system, a disconnect switch allows for an easy and safe way to shut off power. Isolating specific circuits or equipment makes working on the electrical system safer and more efficient.

Specification of Indoor Disconnect Switch

Code	GRGL-160/4
Conventional thermal current (A)	160
Rated operating current (A)	160
Rated operating voltage (V)	400
Rated insulation voltage (V)	750
Rated impulse withstand voltage (kV)	6
Rated making capacity (A)	160
Rated breaking capacity (A)	160
Mechanical life (times)	10000
Electrical life (times)	1000
Short-time withstand current (kA/1s)	10
Operating force (N)	≤400
Pollution degree	3
Enclosure protection grade	IP00

Features of Indoor Disconnect Switch

The load-disconnector features a housing made of glass-fiber-reinforced unsaturated polyester resin. A spring-loaded acceleration mechanism enables rapid connection and disconnection.

The contact structure features two separate contact surfaces with parallel double-break points, with contact pressure maintained by leaf springs. The disconnector automatically controls the open and close limits and features clear on/off markings to indicate the open and close positions.

Application of Indoor Disconnect Switch

Industrial machinery & motor control centers: Factories and industrial plants rely on heavy machinery, and disconnect switches are crucial for safe operation and maintenance. These switches are placed near machines so workers can quickly cut power before servicing equipment.

Electrical panels: In office buildings and homes, disconnect switches provide an easy way to isolate circuits for maintenance. This ensures electricians can work safely without the risk of accidental shocks.

Hvac systems: Heating, ventilation, and air conditioning (hvac) units often include a disconnect switch. This allows technicians to safely turn off power before servicing compressors, fans, or cooling systems.

Solar panels & battery backup systems: Disconnect switches are critical in solar installations to isolate panels from the grid, preventing backfeeding during maintenance. In battery storage systems, they help control power flow and prevent overcharging or discharging.

Rvs, boats & emergency power systems: Battery disconnect switches ensure stored power isn’t wasted or drained when the system isn’t in use. They’re commonly found in rvs, boats, and backup generators.

Components of Indoor Disconnect Switch

Switch handle: Lets you operate it by hand to turn the switch on and off.

Contacts: Conductive pieces that are aimed, either, at connecting or disconnecting the circuits.

Blades: Elements that switch a circuit on and off by altering their position within a machinery.

Insulators: Insulating materials that ensure that undesirable current does not circulate.

Housing/enclosure: Protects you and guards internal parts from any impact by the environment

Fuses: When they are used in the fused types, they offer protection against overcurrent.

Terminals: The positions where cables are joined.

Operating mechanism: It allows the contacts to be shifted within the system to a certain extent.

Packing and Shipping of Indoor Disconnect Switch

Packing	Wooden box
Shipping	Shipped by road, sea, rail

FAQ

Q: Can a disconnect switch be used for daily on/off operations?

A: Not really. While disconnect switches can turn power on and off, they’re not designed for frequent switching like standard circuit breakers or switches. They are primarily meant for emergency shutdowns and maintenance isolation, not as an everyday operational switch.

Q: How does a safety switch differ from a circuit breaker?

A: A safety switch (disconnect switch) simply isolates power, while a circuit breaker is designed to trip automatically when it detects an overload or short circuit. A disconnect switch does not provide automatic protection—it’s purely for manual control.

Q: What happens if a disconnect switch is underrated for my system?

A: An underrated switch can overheat, fail, or even catch fire under excessive electrical load. Always choose a switch with a voltage and current rating that meets or exceeds your system’s requirements to ensure safe operation.

Q: Do all disconnect switches need to be enclosed?

A: Not necessarily. Indoor switches in controlled environments might not need enclosures, but outdoor or high-voltage applications require enclosures to protect against dust, moisture, and accidental contact.

Q: Are there wireless or remotely operated disconnect switches?

A: Yes! Modern smart disconnect switches can be controlled remotely via IoT (Internet of Things) systems. These are becoming popular in industrial automation and smart grids, allowing operators to shut off power remotely for safety or efficiency.

We're professional indoor disconnect switch manufacturers and suppliers in China, specialized in providing high quality custom service. We warmly welcome you to buy indoor disconnect switch at competitive price from our factory.