Round Copper Caps
In the geometric spectrum of fuse termination components, Round Copper Caps have become the preferred structure for high-voltage and high current applications due to their rotational symmetry. Compared with square or irregular end caps, circular cross-sections exhibit uniform circumferential stress distribution when subjected to internal arc pressure, without stress concentration corners, significantly reducing the risk of end cap rupture during the breaking process; At the same time, the combination of the circular outer contour with standard O-ring seals and metal gaskets has self centering characteristics, simplifying assembly positioning requirements.
- Fast Delievery
- Quality Assurance
- 24/7 Customer Service
Product Introduction

In fuse manufacturing and power protection system assembly, circular copper caps serve as the core conductive and structural components. The adaptability, material stability, dimensional accuracy, and assembly compatibility of their circular structure directly determine the fuse's melting characteristics, contact reliability, and long-term system operation safety. Unlike ordinary irregular end caps, Round Copper Caps, with its symmetrical structure design, high-purity copper substrate, and precision manufacturing process, perfectly adapts to various circular fuse tube bodies. From photovoltaic DC protection to vehicle high-voltage distribution, from energy storage systems to industrial control circuits, it comprehensively solves core engineering pain points such as fuse assembly jamming, poor contact, abnormal temperature rise, and poor batch consistency.
procurement information
MOQ
MOQ of Round Copper Caps 1,000 pcs/item, manufactured using stamping molds and MOQ can be negotiated.
01
delivery cycle
The delivery cycle for customized samples of Copper Cap High Pressure OEM is 5-10 days. The delivery time for the order is 20-30 days (for molds and products).
02
packaging and logistics
End Cap Copper use EPE internal and cardboard/tray external to prevent compression deformation during transportation.
03
Payment Items
30% deposit and balance before shipment by Bank T/T or L/C at sight.
04

Application scenarios
Photovoltaic (PV) new energy system
In harsh outdoor environments, PV fuses need to withstand high direct current for a long time. As an external contact surface, the Outer End Cap has high thermal conductivity and quickly transfers the heat of the melt to the external heat sink, preventing the melt from accidentally breaking due to overheating of the end cap.
Energy Storage System (ESS) and UPS
In large-scale energy storage systems, short-circuit currents are extremely high. Copper End Caps Round must have sufficient mechanical strength to withstand the electric shock during short circuits and prevent end caps from bursting and arcing.
Industrial protection (NH/BS/fast fuses)
Widely used in frequency converters and soft starters. The concentricity and roundness of Copper End Cap Solder Fitting are directly related to the uniformity of the conductive cross-section. Our product ensures absolute balance of current distribution and avoids local overheating.

Our Workshop
The production capacity of our Round Copper Caps is 50,000,000 pieces per month, and the production workshop has visual production capabilities and standardized operations in all functional areas. The mold workshop is equipped with slow wire cutting machines and precision grinding machines for high-precision mold support; The automated production line adopts robot welding arms and high-speed stamping machines for efficient operation and stable output; The testing laboratory uses coordinate measuring machines for micrometer level quality testing; The storage area adopts finished product partition storage (with RoHS/REACH labels) and automatic forklift access for orderly management.

contact us
Our company can provide professional product solutions and support direct technical communication with engineering teams to ensure the reliability of products in practical applications. Welcome to contact us.
Hot Tags: round copper caps, China, manufacturers, suppliers, factory












