Standard solutions for screws used in low-voltage electrical cabinets

Standard solutions for screws used in low-voltage electrical cabinets

The material of distribution cabinet circuit electrode bolts should be selected from stainless steel, copper, or alloy with good mechanical properties and corrosion resistance. Stainless steel should comply with the ASTM A240 standard, copper should abide by the ASTM B370 standard, and alloy should abide by the corresponding ASTM standard.

Screws are commonly used in high and low-voltage cabinets, distribution boxes, outdoor mobile site boxes, GCK-type low-voltage withdrawable switchgear, power boxes, three-phase meter boxes, and so on. A low-voltage distribution panel is also called a low-voltage switch panel or distribution cabinet; it is the low-voltage circuit that requires switchgear, measuring instruments, protection devices, auxiliary equipment, etc., according to a particular wiring scheme installed in a metal cabinet constitutes a combination of electrical equipment for control, protection, measurement, distribution, and monitoring.

Screw material

Low-voltage distribution cabinet busbar screws should be made of high-quality carbon steel or stainless steel to ensure its strength, corrosion resistance, and service life. The explosion-proof box above the four screws is grounding screws, is in the electrical leakage or static electricity is too large or short circuit, the current into the earth to avoid damage to the insulation of the explosion-proof distribution box to make the box electrically charged to protect the protection of personal electrocution protection measures. Explosion-proof box subdivided into a lot of general explosion-proof distribution boxes, explosion-proof control boxes, explosion-proof distribution cabinets, etc. can be an explosion-proof box The MNS busbar system has a unique design, the use of bolts coated with ESLOK (a Loctite-type compound), conical spring washers, as well as the threaded plate, the use of torque wrenches to tighten the design has been certified as maintenance-free and is equally suitable for interconnections completed in the field. The MNS busbar system can be called an explosion-proof box. All busbar connections are made from the front of the switchgear.

Medium-Strength Grade 5 Steel Square-Neck Carriage Bolts: Made from Grade 5 steel, these bolts are suitable for fastening most machinery and equipment. A square neck keeps them from turning when tightening a nut. A smooth, rounded head provides a finished look. Grade 5 steel bolts are marked with three radial lines. The material meets SAE J429 specifications for quality. Dimensions meet ASME B18.5 specifications. Length is measured from under the head.

Black-oxide steel screws are mildly corrosion-resistant in dry environments. Zinc-plated steel screws resist corrosion in wet environments. Zinc-flake-coated steel screws are 40 times as corrosion-resistant as zinc-plated screws and comparable to Magni-coated screws.For high-quality Medium-Strength Grade 5 Steel Square-Neck Carriage Bolts fasteners and professional technical support, don't hesitate to contact us at adelajonly@gmail.com or visit our website at [Juxin Fasteners]: https://www.juxinfasteners.com.

Screw size

The size of the screws should be determined according to the specifications and thickness of the busbar to ensure that the screws can firmly fix the busbar and prevent it from loosening or falling off.

Screw length

The length of the screws should be determined according to the thickness of the mother row and the location of the screw holes to ensure that the screws can be wholly penetrated the screw holes and leave a certain margin for fastening.

The screw grain

The thread of the screws should be matched with the thread of the screw holes to ensure that the screws can be smoothly screwed into the screw holes and can firmly fix the mother row.

Screw fastening force: When installing the mother row of the low-voltage distribution cabinet, the screws should be fastened with appropriate tools and torque wrenches to ensure that the mother row is firmly fixed in the distribution cabinet. At the same time, care should be taken not to over-tighten the screws during the fastening process to avoid damaging the screws or the mother row.

The above is the standard of low-voltage distribution cabinet busbar screws; I hope it can help you.

The material characteristics of the screws

Screws are usually made of stainless steel, carbon steel, brass, aluminum alloy, and so on. Stainless steel has better oxidation resistance and is more durable for long-term use in humid environments for distribution cabinets. Carbon steel screws have a lower cost and better strength but are prone to rust. Brass screws have excellent electrical conductivity and are suitable for installation in some special situations. Aluminum alloy screws are lightweight and ideal for some applications that require lightweight.

Suggestions for purchasing screws on the distribution box

1. According to the size of the distribution box, choose the appropriate screw specifications, and select the proper length and diameter, to ensure that the installation is solid.

2, In the choice of material, according to the specific installation environment to consider, such as in the humid environment for long-term use of the distribution box, you can choose stainless steel screws. 3, when purchasing, you can choose some well-known brand screws with a guaranteed installation.

3. When purchasing, you can choose some well-known brands of screws with quality assurance quality assurance.

4. To ensure safety and prevent the electric box from loosening and other safety hazards, you can use locking screws, which can reduce the loosening caused by vibration through a unique design.

5. You can ask the supplier or manufacturer in advance to know more about the screws to better choose the suitable screws.

In short, the suitable screws are an indispensable part of the distribution box, and the choice needs to be made according to the specific situation when purchasing. When installing, you need to carefully check the firmness of each screw to ensure the safety of the distribution box.