Inertia Switch Inc. is a full-service design, engineering, and manufacturing firm founded in 1950. Since the company’s inception, they have designed, qualified, and delivered thousands of types of products. Inertia Switch specializes in acceleration switches of all kinds, but they also manufacture limit switches, prostheses, incandescent digital displays, and many other standardized and unique products.

Their patented “Magnetically Restrained Seismic System” represents a significant advance in the state of the art of motion sensing and acceleration measurement. This system is utilized in the majority of our acceleration switches. These switches have established a unique record of accuracy and reliability in an array of programs throughout the world.

In addition to the existing standard products described throughout our website, Inertia Switch offers comprehensive design, engineering, and manufacturing resources for the development of new and/or custom products.

Engineering discipline:

• Aerospace
• Mechanical
• Electrical
• Manufacturing

State of the art manufacturing using latest technology in Robotics, Vision, & Metrology

World class on premises CNC machining cells including: 9 axis Swiss Style Turning, 7 axis Turret/Gang Style Turning, 5 axis Vertical Machining Centers

Complete model and tooling shop which includes rapid prototyping using 3D printers and a host of tool room machine tools.

Clean room assembly and laboratory.  Soldering, Electrical Testing, Acceleration, Shock, Vibration, Humidity, Sand & Dust, Seal, Temperature Shock, Altitude, EMI and many more.

Acceleration Switches

• General Purpose
• Aircraft Series
• Shock Indicators
• Miniature PCB
• Missile Fusing G Time
• Space Applications

Sealed Limit Switches

• Qualified to MIL-PRF-8805
• High reliability and accuracy
• Ideal for harsh environments
• Ice and FOD scraper
• Long or short travels
• Single or multiple poles
• High and low force models
• Gold or silver contacts available
• Watertight, resilient, or hermetically sealed
• Custom models readily available

Cockpit Displays

Inertia Switch Inc. is the legacy OEM for the Wagner Electric incandescent readout line, including the following part numbers:

Specialized machining processes for the product line include fine-tolerance machining of polycarbonate-epoxy composites, glass-filled epoxies, and filled-epoxy laminates. Strict formulas for dyes and filters yield excellent brightness, color, and sunlight-readability characteristics, verified with original lab equipment. All parts are manufactured based on original Wagner tooling and blueprints, in continuous production since 1999.

Contract Manufacturing

In addition to Inertia Switch Incorporated’s’ standard and custom products, they offer full-service manufacturing capabilities including design to prototype, build-to-print precision machining, product assembly and testing, and more.  These services are available at competitive rates.

Contract work • Machining of thermoplastics, thermosets, composites, and exotic metals • Clean room assembly • Laboratory testing services • Incandescent digital readouts, displays, and indicators • Prostheses of titanium and 7075 aluminum • Fine stainless steel and titanium surgical instruments