In today’s high-stakes applications—whether you're powering an electric vehicle drivetrain, a surgical imaging system, or mission-critical aerospace controls—failure is not an option. That’s why Class 3 wiring harnesses, built to the highest IPC Class 3 standards, should no longer be a specialty option—they should be your default for safety-critical wiring and high-reliability electronics wiring.

What is a Class 3 Wiring Harness?

Class 3 wiring harnesses meet the strictest wiring harness standards under IPC/WHMA-A-620 Class 3. They are intended for critical systems wiring where performance on demand is essential and downtime is unacceptable. Common applications include:

• Defense wiring systems

• Medical device wiring harnesses

• Aerospace wiring harnesses

• Automotive wiring harness Class 3 builds

At Celestix Industries, we manufacture every Class 3 wiring harness with:

1. Zero-defect philosophy (DPPM = 0)

2. 100% continuity and high-voltage testing

3. IPC Class 3 certified operators

4. Environmental and mechanical stress validation

We treat Class 3 as the baseline wiring standard for any application where reliability is non-negotiable.

Why Class 3 Should Be Your New Baseline

1. Precision Crimping = Fail-Safe Connections

• Tolerance: ±0.1mm crimp height

• Pull tests: Exceed 50N

• Inspections: Crimp cross-section analysis after every tool change

Use Cases:

• EV and electric mobility

• Aerospace and UAV systems

• Military and defense-grade assemblies

2. Built for Harsh Environments

Ideal for:

• Industrial wiring harnesses

• Medical equipment and life-support

• Aircraft, drones, and off-road vehicles

3. Premium Materials & Compliance

• Insulation: PTFE, XLPE, Silicone

• Conductors: Silver/nickel-plated copper

• Sheathing: LSZH, braided sleeving, heat shrink

Certifications:

4. Traceability & Quality Assurance

Every harness includes:

• Lot-level tracking

• QA test records

• COC (Certificate of Conformance)

• Client-specific documentation (PPAP, FAI)

5. Design Engineering & Customization

We provide:

• CAD modeling and 3D harness simulation

• DFMA and Poka-Yoke for assembly error prevention

• Support for custom harnesses in:

• EVs

• Medical equipment

• Aerospace systems

The True Cost of Failure

When Failure Isn't an Option

• Medical: Diagnostics errors, life support risks

• Aerospace: Mission shutdowns

• Automotive: Costly recalls and brand damage

Class 3 vs Class 2: Key Differences

Case Studies in Reliability

1. Medical Device Wiring Harness: EMI shielding increased uptime by 98%

2. Automotive Safety Wiring: Used in ADAS systems; return rates reduced by 40%

3. EV Harness: Optimized for heat reduction, enabling 20% faster charge times

4. Aircraft Wiring: Passed 500+ hour vibration/humidity test under AS9100

Why Celestix?

We support:

• OEMs and Tier 1 suppliers

• Industries requiring a wiring harness upgrade or transition

• Safety and performance-focused sectors

Our Offerings:

• Fully certified builds

• Prototyping in 1–2 weeks

• VMI programs

• Global delivery and inventory control

Built with Zero Compromise

For your next high-stakes wiring solution, partner with the best.

Contact Celestix:
Email: info@celestixindustries.com
Get a Quote: celestixindustries.com/GetaQuote
Website: www.celestixindustries.com

Trust Celestix for:

• Wiring harness certification process compliance
  
  

• Critical system reliability
  
  

• Wiring harness failure prevention
  
  

• Wiring harness compliance with global standards
  
  

• Precision and high-end wiring harness builds
  
  

Choose Class 3. Choose Celestix. Always reliable. Always certified.