12kV insulation pull rod assembly for 50kA rated breaking current, which is used for the maximum breaking load in the trolley-type central cabinet in 12kV power system. Its function is to connect the transmission part of the mechanism and the primary conductive circuit, and it is an electrical component with high mechanical strength and insulation capacity.

Product Specifications

Specification Sheet

No.	Name	Unit	Data
1	Rated voltage	kV	12
6	Rated short-circuit breaking current	kA	50
7	Rated Power Frequency Withstand voltage	kV/1min	48
8	Decentralisation	pc	≤5
9	Tensile strength	kN	28kN
10	Torsion resistance	N．m	5

Product Advantages

12kV insulation pull rod assembly for 50kA rated breaking current has many advantages:

Good consistency:

pressed by high-pressure molds, with accurate external dimensions;

Wide range of use:

insulated tie rods are available in a variety of standard sizes, which can be adapted to a variety of occasions of 12kV and below.

Supporting special design:

our company can design the insulated tie rods according to the user's arc extinguishing chambers, according to the different breaking currents, to meet the user's requirements.

Stable performance:

pressed with DMC material, excellent insulating ability; through the special tooling, and professional measurement and inspection equipment to ensure product consistency, reliable performance.

Product Applications

12kV insulation pull rod assembly for 50kA rated breaking current is used for the maximum breaking load in the trolley-type central cabinet in 12kV power system.

Product Outline Drawing

12kV Insulation Pull Rod Assembly For 50kA Rated Breaking Current

A compression spring is installed inside the insulating pull rod to ensure sufficient holding force when the vacuum circuit breaker is closed. This holding force is also used to provide the initial energy for the switch to open, which is related to the rated short-circuit current of the switch.

Domestic arc extinguishing chambers are generally implemented according to the following table:

Rated short circuit breaking current	Preload (compression value of the spring after assembly)	Rated pressure (compression force of the spring after the circuit breaker is closed, domestically, it is based on 3mm overtravel)
50kA	3800±100N	5700±200N

Product profile

The 12kV insulated pull rod (also known as an insulated operating rod, link bar, or switch rod) is a core safety tool for live-line work in power systems. Specifically designed for 12kV voltage levels, its main functions are as follows:

Auxiliary maintenance work: Provides safety support during power outage and restoration operations on distribution lines (such as rural transformers and switches).

12kV Insulation Pull Rod supplier

Safe isolation of live equipment

Allows operators to maintain a safe distance from direct contact with high-voltage live parts, effectively preventing electric shock accidents.

Operating high-voltage equipment

Used to connect or disconnect high-voltage disconnect switches, drop-out fuses, and other equipment to control circuit continuity.

Installation and removal of grounding wires

Used to install or remove temporary grounding wires during power outage maintenance to ensure the safety of the work area.

Live-line detection and measurement

Can be used with voltage detectors, measuring instruments, and other tools to perform non-contact checks on whether lines are energized and the operating status of equipment.

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