Utility Pole Mounted Disconnect Switch for Overhead Distribution Line Operation and Electrical Network Control

Product Description

Product Description

The Outdoor High Voltage Disconnect Switch is a robust electrical isolation device designed for reliable power distribution system operation. Featuring high-quality ceramic insulation and durable construction, this disconnect switch provides safe and visible circuit isolation for medium voltage applications up to 12-15kV. Its outdoor-rated design ensures excellent performance in various environmental conditions, making it ideal for utility and industrial power systems where reliable disconnection and isolation are critical for maintenance and safety operations.

This product is used in three-phase line systems with single-pole configuration, featuring simple structure, cost-effective performance and convenient operation.
It is a single-break vertical opening single-pole disconnector. Mounted on base frames with post insulators, it mainly consists of base, post insulators, main conductive circuit and self-locking device. The blade closing structure enables circuit breaking & closing. Each phase contact blade is made of two conductive sheets with compression springs fitted on both sides. By adjusting spring preload, the required contact pressure for switch blades can be achieved. A self-locking mechanism is equipped for closing operation.

Key Features:

Applications:

Ceramic insulation providing excellent dielectric strength and weather resistance
Rated for 12-15kV applications with robust mechanical operation
Visible break configuration for clear isolation status confirmation
Outdoor-rated construction suitable for harsh environmental conditions

Power distribution line isolation in utility grid systems
Substation equipment isolation for maintenance safety
Industrial plant power system disconnection points
Renewable energy farm electrical isolation requirements

Specification

Item			Unit	Parameters
Rated Voltage			kV	10		15
Maximum Operating Voltage			kV	12		17.5
Rated Insulation Level	1min Power Frequency Withstand Voltage (r.m.s)	To Earth	kV	42		55
		Across Breaking Gap	kV	48		65
	Lightning Impulse Withstand Voltage (peak)	To Earth	kV	75		105
		Across Breaking Gap	kV	85		120
Rated Frequency			Hz	50
Rated Current			A	200	400	630	1250
4s Rated Short-time Withstand Current			kA	6.3	12.5	20	31.5
Rated Peak Withstand Current			kA	16	31.5	50	80
Creepage Distance			mm	300		380
Mechanical Endurance			times	2000		2000

OEM & ODM Custom Service:

We own independent insulator and metal stamping production lines to provide multi-dimensional customization for overseas clients:
1.Hardware customization: Adjust bracket length, contact size and base mounting holes to fit various poles
2.Insulator customization: Modify porcelain height and shed quantity, brown glaze or white glaze porcelain optional
3.Logo engraving: Print customer LOGO, model and certification marks on galvanized brackets
4.Export packaging: Moisture-proof cartons or fumigated wooden cases, neutral packaging or exclusive brand outer packages available 
Professional power engineers coordinate drawing confirmation, sample testing and mass delivery to support stable bulk overseas power equipment orders.

Vacuum Circuit Breaker:

Fuse Cutout:

Surge Arrester:

 Ensures safe interruption of medium and high voltage circuits.

Provides overcurrent protection for overhead distribution lines.

 Protects equipment from lightning and switching overvoltage.

Company Profile

About us

Baoding Sihedan Electric Technology Co., Ltd. is a professional manufacturer of power systems and transmission and distribution line materials, providing diverse solutions for the global energy sector.

Our product includes Power Systems, such as Reclosers, Air Break Switches, Load Break Switches, SF6 and Vacuum Circuit Breakers, and Current Transformers (CTs) and Voltage Transformers (VTs); Insulators & Surge Protection, including Insulators, Surge Arresters, and Drop-out Fuses; Electric Power Fittings, such as Overhead Line Fittings, Stay Materials, Steel Structures, and Earthing Materials; and Enclosures & Switchgears, including Enclosures and Switchgears, offering a complete range of solutions for transmission, distribution, and industrial power applications.

 

To support our product quality, we provide warranty letters and test reports for all products. Additionally, we offer virtual maintenance services, ensuring timely support and expert guidance for our clients, wherever they are.We have successfully contributed to major domestic and international power projects, earning long-term trust from the State Grid Corporation of China and China Southern Power Grid Company, among other leading organizations.

Main products

Packing & Delivery

FAQ

Q1: Are you a factory or a trading company?
A: We are a professional manufacturer with our own production workshop and complete testing equipment.

Q2:Can you provide samples? Are the samples free?
A: Samples are available, but not free of charge; the sample fee and freight cost shall be borne by the buyer.

Q3:How long is the warranty period of the products?
A: We provide a 1-5 year warranty against manufacturing defects, starting from the date of shipment.

Q4:EPC material design and bulk supply?

A:Yes, we have a strong design team and have been supplying LV and MV EPC materials in bulk for many years.

Q5:Complete documents for tender?

A:Yes, a complete set of documents is ready for submission.

Q6: Can you do OEM with our brand?
A: Yes, we accept OEM customization with your logo, brand, and packaging.

Q7:What kind of packaging do you use for the products?
A: Standard export pallets with waterproof and moisture-proof treatment, suitable for long-distance ocean transportation.

 

Q8: What payment methods do you accept?

A:  1. 30% T/T in advance, 70% T/T against copy of B/L(Bill of Lading)

      2. 30% T/T in advance, 70% by L/C                                                                             

 

Q9: What shipping options do you provide, and what are the typical lead times for delivery? 

A:Sea Freight, and the lead times is about 15-30 days.