China Dual Power Manual Transfer Disconnector, Interlock Circuit Breaker, Solar Photovoltaic System Transfer Switch Manufacturer, Factories

The SR219G-125 disconnector (hereinafter referred to as the switch) is suitable for AC 50/60Hz, rated current 125A and below, and rated voltage up to 400V in distribution and control circuits. It is mainly used as the main switch in terminal combined electrical apparatus and can also be used for infrequent control of various low-power electrical appliances and lighting. It is widely used in industrial and mining enterprises, high-rise buildings, commercial and other fields Places such as families.

Product Description

Functional Features

Dual power supply switching: It can switch between two power supplies. When the common power supply fails or needs maintenance, the load can be quickly and safely switched to the backup power supply to ensure continuous power supply to electrical equipment and improve the reliability and continuity of power supply.

Isolation function: When the disconnector is in the open state, it can clearly isolate the power supply from the load, forming a visible break point, which is convenient for circuit inspection and maintenance and ensures the safety of the staff.

Product Features & Applications

In the industrial field: In factories, mines and other places, many important equipment require reliable power supply. The dual power supply dual transfer disconnector can be used to ensure that the equipment can quickly switch to the backup power supply when the main power supply fails, avoiding production interruption.

In the commercial sector: In commercial sectors such as shopping malls and hotels, to ensure uninterrupted power supply for systems like lighting, elevators, and fire protection, such disconnectors are often equipped.

Civil buildings: In some residential buildings, hospitals, data centers and other places with high requirements for power supply reliability, this disconnector can be used to ensure the power supply for key equipment.

Precautions for Use

Installation environment: It should be installed in a dry, well-ventilated environment free of corrosive gases and dust to prevent the service life and performance of the equipment from being affected by harsh conditions.

Correct wiring: Strictly follow the product manual for wiring to ensure it is secure and avoid safety hazards such as overheating and sparking caused by loose wiring.

Type Instruction & Wiring Method
Type Instruction
Wiring Method
Parameter Information
Product name Isolating switch Rated current 63A
Product model SR219G Rated voltage 230V/400V
Product pole number 2P Rated power 50/60Hz
Electrical appliance lifespan 1500 Contact method 1-0-2
Degree of protection IP20 Mechanical life 8500
Product Size
Product Size
Detailed Product Gallery
Dual Power Disconnector Detail 1
Dual Power Disconnector Detail 2
Dual Power Disconnector Detail 3
Dual Power Disconnector Detail 4
Dual Power Disconnector Detail 5
Dual Power Disconnector Detail 6
Dual Power Disconnector Detail 7
Dual Power Disconnector Detail 8
Dual Power Disconnector Detail 9
Frequently Asked Questions
What is the primary function of the SR219G dual power transfer disconnector?
The SR219G is designed to switch between two power supplies safely, ensuring continuous power to load equipment when the primary source fails or requires maintenance.
Is this isolating switch suitable for residential data centers?
Yes, it is ideal for places with high power reliability requirements, including data centers, hospitals, and civil buildings, to maintain power for critical systems.
What is the protection rating of this device?
The product features an IP20 protection degree, which protects against solid objects while being suitable for indoor installation in dry environments.
What are the mechanical and electrical lifespans of the switch?
The SR219G offers a mechanical life of 8,500 operations and an electrical appliance lifespan of 1,500 operations.
Does this switch provide safety during circuit maintenance?
Absolutely. The isolation function creates a visible break point when in the open state, clearly separating the power supply from the load for safe inspection.
What wiring method does the SR219G support?
It utilizes a 1-0-2 contact method, allowing for a neutral center position to ensure complete isolation before switching between power sources.

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