Your professional power fittings supplier
Our goal is to become your true partner in the field of aluminum alloy power fittings in China. Guangdong Jinkai Power Fittings Co., Ltd., established in 2013 and headquartered in Tangxia Town, Dongguan City, Guangdong Province, is a comprehensive enterprise integrating power fitting manufacturing, plastic product production, mold research and development, and metal processing.
-
![Mnp Rectangular Bar Clamp For Flat Busbar]()
Mnp Rectangular Bar Clamp For Flat BusbarMnp Rectangular Bar Clamp for Flat BusbarOperating Temperature: Continuous operation from −25°C to +70°C; short-term resistance up to 90°C, meeting standard indoor operating conditions.Materials: Top -
![MNP Aluminum Indoor Supports For Bar]()
MNP Aluminum Indoor Supports For BarMNP Aluminum Indoor Supports For BarScope of Application: 10–35 kV indoor switchgear, substations, generator rooms, and switch cabinets; suitable for the fixation and insulation isolation of -
![Indoor Supports For Busbar Substation Fitting]()
Indoor Supports For Busbar Substation FittingIndoor Supports for Busbar Substation FittingSuitable Busbars: Copper/aluminum rectangular busbars (TMY/LMY), width 63–125 mm, thickness 6.3–12.5 mm; supports stacking of single, double, or triple -
![MNP Inside Rectangular Bus Bar Fixed Fixtures]()
MNP Inside Rectangular Bus Bar Fixed FixturesMNP Inside Rectangular Bus Bar Fixed Fixtures are a key component in substations and power distribution equipment used to fix and support rectangular busbars. It consists of the fixing hardware body,
Why Choose Us
Lorem ipsum dolor sit, amet consectetur adipisicing elit.
Our Company
Established in 2013, Guangdong Jinkaite Power Fittings Co., Ltd. specializes in the R&D and manufacturing of power distribution fittings and related components, and operates a 19,000 m² facility with in-house R&D, full-process mold development, and integrated manufacturing.
Our Services
We provide professional sales and after-sales services. Our professional service team responds swiftly to pre-sales, sales, and after-sales needs, providing one-stop full-process services from procurement to on-site production and delivery, truly bringing service to your doorstep. We also offer more service support for website buyers.
Our Certificates
Certified to ISO 9001, ISO 14001, and OHSAS 18001, compliant with CE & RoHS, supported by multiple national patents, and recognized as a High-Tech and Specialized & Innovative Enterprise.
Our Market
Serving key domestic markets and 50+ countries worldwide, trusted by top utilities and global brands, and actively present at leading international power industry exhibitions.
Advantages of Anti-Vibration Hammers
The upper clamping plate is made of aluminum alloy (non-magnetic), forming a non-closed magnetic circuit with the steel base plate. This significantly reduces hysteresis losses and eddy current heating, thereby improving transmission efficiency and making it suitable for high-current busbars.
Frame-style design: the base plate is made of hot-dip galvanized steel (load-bearing / corrosion-resistant), while the cover plate is made of aluminum alloy (wear-resistant / electrically insulating); accommodates 1–3 flat rectangular busbars, covering mainstream copper busbar widths of 63–125 mm, and meets standard current requirements up to 4000 A.
Secured with countersunk bolts and insulators; upper and lower aluminum clamps ensure the busbar does not shift or wobble; built-in anti-slip structure prevents loosening caused by electrodynamic forces or thermal expansion and contraction; one fixing point per busbar section, located at the midpoint for greater stability.
Complies with GB standards; free of sharp edges or burrs; surface treated with hot-dip galvanizing and aluminum alloy for corrosion resistance; service life ≥15 years; compatible with M10/M16 post insulators for easy installation.
Product Specifications
Material: Base plate / Fasteners = Hot-dip galvanized steel; Cover plate = Aluminum alloy;
Rated voltage: ≤35 kV;
Rated current: ≤4000 A;
Operating temperature: -40°C to +80°C;
Breaking Load: ≥ 2.5 times the busbar’s rated load;
Clearance Requirements: 1–1.5 mm between the upper clamping plate and the busbar when installed horizontally; 1.5–2 mm when installed vertically (as per specifications);
Corrosion Resistance Rating: Suitable for both outdoor and indoor use; suitable for salt spray environments.
Packaging and Shipping
Packaging
1. Standard packaging: inner bag + cardboard box
2. Custom packaging is available upon request.
Shipping
You may specify alternative shipping methods, such as airmail, FedEx, or DHL. We will inform you of the shipping costs upon receipt of your order. It is recommended that you provide your own FedEx/DHL account number so that shipping charges can be charged directly to your account. We also offer sea or air freight; please specify your port of destination.
FAQ
Q: What is the difference between MNP, MWP, and MWL?
A: MNP: Indoor horizontal rectangular busbar mounting hardware (most commonly used);
MWP: Outdoor horizontal rectangular busbar mounting hardware (higher corrosion resistance);
MWL/MNL: Indoor/outdoor vertical rectangular busbar mounting hardware (suitable for vertically arranged busbars).
Q: Why are MNP covers made of aluminum alloy instead of steel?
A: Steel closed circuits in AC busbars generate eddy current and hysteresis losses, leading to increased heat generation and power loss. Aluminum alloy is non-magnetic, eliminating hysteresis losses while offering lightweight construction and corrosion resistance.
Q: How to select the MNP model?
A: 3-step selection process:
Check the layout: Choose MNP for horizontal installation, MWL/MNL for vertical installation;
Check the number of panels: 1 panel – 10 series, 2 panels – 20 series, 3 panels – 30 series;
Check width: 63 mm – select 101/201/301; 80 mm – select 102/202; 100 mm – select 103/203; 125 mm – select 104/204.
Q: What should be noted during installation?
A: Ensure bolts are tightened flush with the insulators without applying additional pressure to the busbar;
Leave a 1–1.5mm gap between the flat clamping plate and the busbar (to allow for thermal expansion and contraction);
Secure one fixed point per busbar section, located at the midpoint of the total length or between two expansion joints;
Ensure contact surfaces are free of burrs, and apply bolt torque according to specifications (approx. 25 N·m for M10, approx. 45 N·m for M16).
Q: Can the MNP be reused?
A: Reuse is not recommended. After disassembly, the steel base plate and aluminum alloy cover plate are prone to deformation, and bolt threads are prone to stripping. Reuse may result in loosening and poor contact, compromising safety.
As one of the most professional mnp busbar hardware manufacturers and suppliers in China, we're featured by quality products and good price. Welcome to buy high-grade mnp busbar hardware made in China here from our factory. If you have any enquiry about quotation, please feel free to email us.
