24kV 630A Outdoor High Voltage Isolator Switch | Durable Load Break & Safe Power Disconnection Solution

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24kV 630A Outdoor High Voltage Isolator Switch | Durable Load Break & Safe Power Disconnection Solution

An isolating switch (commonly referred to as a disconnector) is a specialized device in electrical engineering designed to safely separate circuits, creating a de-energized environment during equipment maintenance or system servicing. Its core function lies in providing a visible physical breakpoint to confirm circuit separation, ensuring personnel safety by eliminating residual current risks. Widely used in power transmission systems, industrial control terminals, and energy facilities, it is particularly critical for scenarios requiring power disconnection during mechanical adjustments or component replacements. Typical designs feature a rotary operating lever, insulation protection components, and visual open/close indicators, with advanced models incorporating grounding interlock functionality to enhance safety by connecting isolated sections to a grounding network. Notably, these devices lack arc suppression capabilities and must only operate after circuit breakers have de-energized the load, classifying them as passive safety components. Compliant with IEC, ANSI, and other international standards, they are essential for isolating high-voltage substation equipment (e.g., circuit breakers, transformers) during maintenance, serving as a foundational safeguard for secure power system operations.

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Product Description

Outdoor High-voltage Switch Disconnector

Product Description

The 24kV 630A Outdoor High Voltage Isolator Switch is engineered for reliable power disconnection and switching control in medium-voltage distribution systems. With its durable insulated structure, corrosion-resistant steel components, and high mechanical endurance, this outdoor high voltage isolator switch ensures safe and stable operation under harsh environmental conditions including rain, salt fog, dust, and extreme temperatures. Designed for power substations, overhead lines, industrial distribution networks, and utility infrastructure, this 24kV 630A isolator switch provides clear visible isolation to protect workers and equipment during maintenance or emergency isolation operations.

Product Benefits

• Efficient Mechanical Operation

Ensures smooth switching with low operating torque.

• High Dielectric Strength

Provides stable insulation performance under 24kV working voltage.

• Weatherproof Outdoor Construction

Resistant to UV, corrosion, rain, and environmental stress.

• Visible Break Guarantee

Provides clear isolation indication for safety compliance.

• Long Service Life

Expected operational lifespan of 25–30 years.

Environment of use

1.The altitude above sea level:2000m

2.The ambient air temperature:-40~40'℃ wind speed does not exceed 32m/s.

3.The earthquake intensity does not exceed 8 degrees.

4.The working situation is without frequent violent vibration.

5.The installation site of ordinary type isolator should be kept away from gas,smoke chemical deposition,salt-spray fog, dust and other explosive and corrosive maters that affect seriously insulation and conduction capability of the isolator.

6.Pollution-proof type isolator is applies to severe filthy conduction area, however,it shouldn't be any explosive matters and matters causing fire.

Technical Specification：

No.	Item		Unit	Data
1	Rated voltage		kV	12,36
2	Rated current		A	630
3	Rated power frequency		Hz	50/60
4	Rated peak withstand current		kA	60,63
5	Rated short-time withstand current		kA	20,25
6	Rated short-time withstand current duration		S	4
7	Main loop resistance		μ Ω	12kV≤90	36kV≤100
8	1min.PF withstand voltage(dry)	Phase to phase/ earth across open contacts	kV	42/48 30 75/85	95/115 85 185/215
9	1min.PF withstand voltage(wet)
10	Lightning impulse withstand voltage
11	Mechanical life		Times	200

Quality Assurance

Every 24kV 630A Outdoor High Voltage Isolator Switch undergoes strict production inspection, including dielectric testing, mechanical endurance testing, weather resistance evaluation, and load simulation testing. The product meets IEC, GB, and ANSI applicable standards and includes full traceability manufacturing records with optional third-party test reports.