Lumberg was founded in Germany, a family-owned enterprise with a history of more than 90 years, focusing on the research and manufacturing of connectors, contact systems, and electromechanical components. It provides extensive services to fields such as household appliances, building technology, automation, mobile communication, and its product portfolio is rich and designed meticulously, making it one of the technical leaders in the connector industry. Its products cover the RAST series, M12/M16 circular connectors, high-energy connections, and sensor/actuator connection solutions, emphasizing quality and reliability.

One, strategies for selecting materials for domestic connectors and cost control experienceWith the increasing calls for localization and requirements for supply chain resilience in the market, domestic connector manufacturers have accumulated a wealth of experience in material selection and cost control. The following practices can be referred to:
Material Selection: High Cost-Performance Material Replacement and Optimization Design
Engineering plastics (such as PBT) are widely used: Lumberg's M12 connector housing and inserts are mostly made of PBT (polybutylene terephthalate), which combines heat resistance, mechanical strength, and cost advantages, making it the preferred material for domestic substitution.
●Rational material configuration of metal contacts: Copper alloy (CuZn) or stainless steel is used as contact material, and some models even use gold-plated/silver-plated to enhance contact performance. However, there are also cost-optimized versions that consider more economical nickel-plated or uncoated methods to balance performance and cost.
High protection grade shell design: The domestic solution can refer to IP65/IP67 level design, choose appropriate O-shaped ring materials (such as FKM) and structural sealing technology to balance cost and requirements of using environment.
Cost control experience
● Scale procurement and localization of production: Reduce the unit price of material procurement through bulk orders, while utilizing domestic production resources to reduce logistics and tariff costs.
Adopt modularization and generalization: Carry forward the concept of structural modularization, reduce redundant specifications and non-standard parts, simplify inventory management, and reduce capital occupation.
● Standard parts replacing customized parts: Give priority to the use of general standard connector models, reduce the impact of non-standard customization, while ensuring delivery time and supply stability.
Balancing technology in terms of performance and economy
●Rational reduction design: Adjust the material thickness, contact plating thickness, etc. appropriately within the allowable temperature and current load requirements, to reduce production costs.
●Simplify structure without compromising quality: Optimize structural design, avoid complex redundant designs, reduce processing difficulty and time, and improve production efficiency.

Overall Experience Comprehensive SummaryDomestic connectors achieve a positive balance between material costs, production efficiency, and product performance through strategies such as reasonable material selection (such as PBT plastic, economical metal contacts), bulk procurement, local production, modular design, and derating optimization. Drawing on the high-quality benchmark experience of brands like Lumberg, it helps domestic enterprises quickly improve product quality and market competitiveness, while providing customers with cost-effective and sustainable connector solutions.

Domestic connectors have gained a significant competitive advantage in material selection and cost management: through high-quality engineering plastics, economic alloy contacts, local mass production, and modular design strategies, they have achieved performance comparable to imported products and better cost control. In the future, the substitution of domestic products is not only a cost-driven choice, but also a reflection of improved local service response and upgraded industrial collaboration capabilities.
If you are interested in the domestic alternative products of Lumberg brand connectors, or have purchasing needs, or own the production or sales channels of such products, and wish to cooperate or communicate in-depth, please contact us in the following way:
Manager Zhang (18665383950, WeChat number the same)We look forward to joining hands with more industry partners.