At Wermke Spring, we manufacture springs to meet the high-performance demands of the electrical industry. From power distribution systems to circuit boards and control panels, our precision-engineered springs help ensure conductivity, continuity, and reliability across a wide range of electrical applications.
Since 1953, Wermke Spring has been a trusted spring manufacturer for companies in industrial power equipment. Whether you need custom spring contacts or wire forms for switchgear, we deliver electrical spring solutions that meet your exact performance and material specifications. Contact us to submit your drawing or request a quote for spring manufacturing to learn more about how we can serve you.
Engineered Spring Solutions for Industrial Power Equipment
Wermke Spring manufactures custom compression springs, torsion springs, and precision wire forms for high-current electrical systems, switchgear assemblies, circuit breakers, motor brush holders, and renewable energy infrastructure. Wire diameter ranges from 0.009” to 0.625” depending on component type and material specification.
We support OEM manufacturers and switchgear rebuilders that require consistent contact pressure, mechanical reliability, and long-term durability in demanding electrical environments.
When electrical equipment fails, the root cause is rarely a major component. More often, failure results from loss of contact force, fatigue, thermal cycling, or mechanical wear inside the switching assembly. Our role is straightforward: manufacture engineered spring components that maintain force, stability, and safety inside your electrical systems.
We build to your drawings. We manufacture to your specifications. We deliver repeatable performance.
Applications in High-Current & Grid Infrastructure Systems
Our custom electrical springs are used in:
- Circuit breakers and contactors
- Contact pressure springs used to maintain reliable electrical contact and minimize resistance during high-current operation
- Medium- and high-voltage switchgear
- Mechanical spring components supporting load balancing, actuation, and equipment reliability in power distribution systems
- Disconnect switches and over-center actuation mechanisms
- Brush assemblies in motors and generators
- Renewable energy disconnects and combiner systems
- Grounding clips and retention wire forms
- Industrial control panels and power distribution assemblies
Electrical engineers rely on spring components to maintain consistent preload, ensure low contact resistance, and reduce arcing under load. Proper force retention directly impacts thermal performance, current transfer efficiency, and long-term equipment safety.
Wermke Spring manufactures:
- Compression springs for contact force retention
- Torsion springs for snap-action switching mechanisms
- Constant-force brush springs for motor and generator assemblies
- Custom wire forms for latch systems, grounding retention, and clamping applications
Every component is manufactured to meet specified load rates, spring constants, dimensional tolerances, and fatigue cycle requirements.
Wermke Spring manufactures a full range of electrical spring types, including:
Contact Springs
Contact springs ensure reliable conductivity between electrical terminals, circuit boards, or connectors. These springs are commonly used in switches, relays, battery terminals, and printed circuit board (PCB) assemblies.
Battery Springs
Battery contact springs maintain consistent electrical flow and positioning in battery compartments. We manufacture both compression and torsion-style battery springs to fit a wide variety of consumer and industrial devices.
Compression Springs
Used in electrical relays, circuit breakers, and contact mechanisms, compression springs help provide force, spacing, or insulation within electrical assemblies.
Custom Wire Forms
We can manufacture custom wire forms used in fuse holders, switch terminals, and grounding clips, ensuring optimal shape, conductivity, and performance.
Built for Demanding Electrical Environments
Industrial electrical systems operate under vibration, heat, moisture, and mechanical cycling. Springs used in these environments must resist set, maintain force under thermal expansion, and withstand thousands of operational cycles without failure.
We manufacture components using:
- Phosphor Bronze
- Beryllium Copper
- Brass
- Stainless Steel (for non-conductive applications)
- High-carbon Steel
Material selection is guided by your requirements for conductivity, corrosion resistance, fatigue life, and environmental exposure. Our team works with you to determine the best spring material based on your needs for conductivity, fatigue life, corrosion resistance, and size constraints.
Stress Relief & Heat Treatment Capabilities
Spring forming introduces stress into the metal during the coiling and forming process. Wermke performs controlled stress-relief baking after forming to ensure dimensional stability, consistent spring performance, and long service life in electrical equipment. Our ovens also allow us to temper materials when required. For specialized heat-treatment processes beyond our internal capability, we work with qualified heat-treatment partners to meet your exact engineering specifications.
Finishing & Protective Coatings
Electrical components often require corrosion protection or conductive surface treatments depending on the application environment.
While Wermke does not perform plating in-house, we maintain a network of qualified finishing partners capable of supporting a wide range of coatings, including:
• Zinc plating
• Cadmium plating
• Black oxide
• Powder coating
• E-coating
• Application-specific corrosion protection finishes
All finishing services are coordinated as part of the production workflow to ensure parts arrive ready for assembly.
Our ISO 9001:2015 certified quality management system ensures repeatability, traceability, and consistent performance across both prototype and production runs.
Common Uses for Electrical Springs
Our electrical springs are designed to serve a wide range of electrical applications, including:
- Power distribution and switchgear – springs in relays, circuit breakers, and disconnect switches.
- Automotive electrical systems – battery terminals, fuses, sensors, and control modules.
- Telecommunications equipment – grounding springs, RF shielding, and electrical contacts.
- Medical devices – precise spring mechanisms for handheld diagnostic tools and electronics.
- Industrial automation – springs for connectors, sensor assemblies, and control panels.
Each electrical application requires different tolerances, materials, and force characteristics. Wermke Spring works directly with engineers and procurement teams to ensure every component meets the project’s unique requirements.
For OEM Manufacturers
If you design and manufacture new electrical equipment, you need a spring supplier that:
- Manufactures precisely to engineering drawings
- Maintains tight tolerances
- Supports mid-volume production runs
- Ships on schedule
- Understands the mechanical role of contact force in electrical safety
We integrate directly into your supply chain and produce custom spring components that support safe load balancing, reliable switching, and reduced failure rates in high-current systems.
Flexible Production Quantities
Electrical manufacturers often require a mix of prototype, service replacement, and production quantities. Wermke supports a wide range of order sizes depending on the application. Typical production releases for electrical OEM customers range between 1,000–3,000 pieces per release, with multiple releases scheduled throughout the year.
We also support small-quantity rebuild and service projects, where orders may consist of only a handful of specialized components.
There are no rigid minimum order quantities. Production schedules align with customer demand and inventory strategy.
For Switchgear Rebuilders & Refurbishers
Legacy equipment often requires replacement springs to restore original performance characteristics.
Wermke Spring can manufacture replacement compression springs, torsion springs, and wire forms built to your specifications. Whether restoring circuit breakers, contact assemblies, or motor components, maintaining original force curves and dimensional accuracy is critical to safe operation.
Wermke regularly manufactures components directly from customer drawings and engineering specifications, supporting OEM design teams that require precision manufacturing without design reinterpretation. We focus on manufacturing to print, helping reduce variability and ensuring the rebuilt equipment performs as intended.
American Manufacturing Since 1953
Wermke Spring is a U.S.-based custom spring manufacturer serving industrial customers for more than 70 years. We specialize in engineered spring solutions for demanding applications where safety, durability, and performance matter.
From small production runs to thousands of parts, we provide consistent quality, dependable lead times, and responsive support.
If you are an electrical engineer, equipment manufacturer, or procurement manager seeking a reliable custom spring partner for switchgear, grid components, industrial motors, or renewable energy systems, we invite you to submit your drawing or request a quote.
Wermke Spring delivers the precision mechanical components that keep your electrical systems operating safely and reliably.
Have a drawing ready? Submit it below for and our team will review the specification and provide a quote for your project.
Why Choose Wermke Spring for Electrical Springs?
- Trusted Since 1953 – Decades of experience in custom spring manufacturing.
- Precision Engineering – Tolerances that meet the demanding needs of electrical applications.
- Custom Design Support – Work with our engineers to develop a spring that performs precisely within your component.
- Material Expertise – Guidance in selecting the right material for conductivity, spring force, and environmental resistance.
- Scalable Production – From prototype and small batch runs to full-scale production, we can meet your volume needs without sacrificing quality.
Frequently Asked Questions About Electrical Springs
What materials are best for electrical conductivity?
Phosphor bronze, beryllium copper, and brass are excellent choices for conductivity and are often used in contact springs and terminals. Our team can help you choose the right alloy based on electrical requirements, operating environment, and budget.
Do you offer custom shapes for wire contacts?
Yes. Many electrical applications require custom-shaped wire forms or spring contacts to fit compact or uniquely shaped housings. Wermke Spring offers complete customization, including tooling and design support.
Can you manufacture springs for miniature electrical components?
Absolutely. We specialize in precision springs for small-scale electronics and micro-components. Our tight tolerances and experience with fine wire sizes make us an ideal partner for your next project.
What if I need a spring replaced from an older or discontinued electrical product?
We regularly help clients reverse-engineer springs from existing or outdated products. Whether you have a drawing, sample, or just measurements, we can help recreate the part.
Partner with Wermke Spring for Reliable Electrical Spring Solutions
From high-precision contact springs to custom wire forms and battery terminals, Wermke Spring has the knowledge and manufacturing capabilities to support your electrical project. Our focus is on helping you get the exact part you need, engineered for performance, manufactured for consistency, and delivered on time.
We serve companies of all sizes, from small startups building their first prototype to nationwide manufacturers seeking a dependable long-term supplier.
If you’re looking for a reliable source for electrical springs, Wermke Spring is ready to help. Call us at (636) 677-5500 or contact us online to discuss your project, request a quote, or learn more about our custom spring capabilities. Our team is here to provide the right spring solution for your electrical application.
