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Indoor Vacuum Circuit Breaker

SanGao high quality Indoor Vacuum Circuit Breaker is particularly useful in unstable situations where the circuit breaker trips frequently and needs to be reset quickly. VCBs can be restored quickly, often saving time and money. They also work well in situations with high voltage and low current. Vacuum circuit breakers work best in the voltage range of 11 to 33 kV.


Indoor Vacuum Circuit Breaker has many applications and a variety of industries can use them, including power plants, commercial and manufacturing buildings, and industrial plants. They work well in both medium and high voltage systems and are generally considered the most reliable choice. When dealing with sensitive and expensive equipment, it is necessary to have a device that can continuously extinguish the arc quickly. Equipment and even life may be threatened.


Indoor Vacuum Circuit Breaker is optimized for high mechanical and electrical stresses. It can be flexibly applied and can be fixed or removable. SanGao uses standardized designs, flexible applications and short delivery times. It can be replaced or retrofitted to existing panels to extend the life of equipment. Today's vacuum circuit breakers are very durable, making them ideal for clearing faults in many applications. Designed and optimized by experienced manufacturers, they are lighter, more cost-effective, require less maintenance, and last longer than ever before.

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Vacuum Load Break Switch and Fuse Combination Apparatus

Vacuum Load Break Switch and Fuse Combination Apparatus

SanGao, a China manufacturer of medium-voltage distribution equipment, offers premium quality Vacuum Load Break Switch and Fuse Combination Apparatus. The apparatus serves two distinct roles. As a load break switch, it makes and breaks load current, closed‑loop current, no‑load transformer current, and cable charging current. When configured as a switch‑fuse combination, it employs striker‑pin actuation to open all three phases and interrupt any current up to the rated short‑circuit value upon fault detection. This dual capability eliminates the need for a separate circuit breaker in many feeder and transformer protection applications, endowing the load switch with rapid, economical and effective short-circuit protection functions

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Indoor AC High Voltage Vacuum Load Breaker with Earthing Switch

Indoor AC High Voltage Vacuum Load Breaker with Earthing Switch

Indoor AC High Voltage Vacuum Load Breaker with Earthing Switch from China supplier and manufacturer SanGao Electric a technically sound and cost‑effective distribution solution. Rated at 12 kV and 630 A, with a 20 kA short‑time withstand capability, this unit is used to securely connect and disconnect the circuit for three‑phase AC 50Hz systems, suitable for urban ring‑main units, industrial feeder cabinets, transformer incomers, and rural distribution sectionalising points.

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630A 3 Phase Vacuum Circuit Breaker

630A 3 Phase Vacuum Circuit Breaker

High quality 630A 3 phase Vacuum Circuit Breaker, as a type of vacuum circuit breaker with a rated current of 630A, is widely used in places that require frequent operation. As a side fixed type, SanGao's 630A three-phase vacuum circuit breaker is designed with dimensions suitable for load circuit breakers and vacuum circuit breaker combination switchgear. In recent years, our company has developed rapidly and our business scale has been expanding day by day. Adhere to technological innovation as the driving force, deeply implement the innovation driven strategy, and improve the mechanism for transforming scientific research achievements.

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HV Indoor Vacuum Circuit Breaker

HV Indoor Vacuum Circuit Breaker

SanGao's HV Indoor Vacuum Circuit Breaker is a key protection and control device in the power system, mainly installed in indoor environments. Under dispatch instructions, it safely closes (connects) or opens (disconnects) high-voltage circuits to operate equipment.

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Handcart Type Vacuum Circuit Breaker

Handcart Type Vacuum Circuit Breaker

Advanced Handcart Type Vacuum Circuit Breaker is an indoor high-voltage switchgear with a rated voltage of 24kV and three phase AC 50Hz, suitable for control or protection switches in power plants, substations, and industrial and mining enterprises. It is particularly suitable for cutting off important loads and frequent operations in high-altitude areas. SanGao adheres to the business philosophy of "quality, efficiency, and high standards" and has close cooperation and communication with technology enterprises such as Xi'an Senwu'an.

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12kv 630A Circuit Breaker

12kv 630A Circuit Breaker

SanGao is a professional manufacturer of 12kv 630A Circuit Breakers and vacuum arc extinguishing chambers. The vacuum circuit breaker adopts a modular spring operating mechanism, with a simple structure and stable performance.Our company is located in Wenzhou High tech Development Zone, with convenient transportation and superior production environment.

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Indoor Handcart Vacuum Circuit Breaker

Indoor Handcart Vacuum Circuit Breaker

Advanced Indoor Handcart Vacuum Circuit Breaker has a rated voltage of 12kV and a three-phase AC frequency of 50Hz. It is a flexible device that can protect line equipment from short circuits or frequent operations. SanGao's quality policy is to continuously improve its quality management system, providing high performance air insulated switchgear, gas insulated ring main unit, vacuum circuit breaker vacuum bottles, and continuously meeting customers' requirements and expectations for product quality.

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12kv Indoor Vacuum Circuit Breaker

12kv Indoor Vacuum Circuit Breaker

SanGao durable 12kv Indoor Vacuum Circuit Breaker , Named after its high vacuum insulation medium for both the arc extinguishing medium and the contact gap after arc extinguishing; It has the advantages of small size, light weight, and is suitable for frequent operation and arc extinguishing without maintenance, and is widely used in distribution networks.

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SanGao welcomes you to purchase Indoor Vacuum Circuit Breaker directly from the place of origin. As a professional factory and supplier in China, we have an independent team to produce high-quality products.
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