300 Series Wire-Connected Door Switch for Commercial Vehicles

Overview

The 300 Series Wire-Connected Door Switch is a robust rotary-actuated switch engineered for door-control systems on buses, coaches, vans and other commercial vehicles. Based on the proven G2 rotary architecture, it delivers consistent electrical performance across rated voltages and currents, low contact resistance, and strong insulation properties — all packaged in a rugged assembly that supports wired harness integration for onboard vehicle systems. 

Key Features

• Stable electrical performance — Designed to operate reliably within specified voltage/current ranges; low contact resistance reduces heating and power loss while high dielectric strength and insulation resistance improve safety and noise immunity. 

• Positive rotary operation & excellent user feedback — The switch is actuated by a rotational motion that provides a clear tactile detent, making it intuitive for drivers or service technicians and suitable for frequent manual operations. Precise indexing enables accurate gear/position selection for multi-function door controls. 

• Tailored load ratings — Offered in multiple rated voltage/current configurations so OEMs can choose variants that match lighting, motor control, interlock, or alarm circuit requirements. 

• Vehicle-ready wiring — Supplied with wire-connected terminations or harness-ready leads to simplify assembly, reduce installation time, and improve vibration resistance in mobile environments. 

• Rugged quality & testing — Manufactured under strict quality control and subjected to electrical and mechanical endurance tests to ensure consistent operation over long service life in commercial duty cycles. 

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Typical Specifications 

• Actuation type: Rotary cam / detented rotary control.

• Contact resistance: Low (manufacturer-specified milliohm range). 

• Insulation & dielectric: High dielectric strength and rated insulation resistance — suitable for vehicle electrical environments. 

• Rated voltages/currents: Multiple options to cover low-voltage control circuits up to higher load contacts (refer to model datasheet). 

• Mounting / termination: Wire-connected leads / harness connectors; panel or bracket mountable. 

• Ingress / environmental: Many rotary micro switches are available with protection coatings or IP-class housings for vehicle exposure (model dependent). 

  
  

Application Scenarios in Commercial Vehicles

• Sliding and swing doors: Controls for door open/close detection, interlock engagement, or manual override.

• Driver console selectors: Mode selection for door operation modes (auto, manual, lock).

• Alarm/interlock circuits: Reliable switching for warning lamps, chimes or safety interlocks tied to door status.

• Auxiliary equipment control: Small motor circuits or lighting associated with doors and steps. 

  
  

Why Choose the 300 Series for Vehicle Door Systems?

• Consistent contact integrity minimizes false signals and heating under load.

• Rotary indexing gives clear operator feedback, ideal for frequent use.

• Harness-friendly wiring reduces assembly complexity and improves vibration robustness.

• Proven quality control and endurance testing lower in-service failure risk and maintenance costs.

  
  

Quality Assurance & Compliance

The 300 Series is produced under documented quality systems and is tested for mechanical life and electrical endurance similar to leading automotive and industrial rotary switch products. OEMs can request test reports and conformity documentation to meet fleet or regulatory requirements. 

Ordering & Customization

Available as standard wire-connected assemblies or configurable with different contact ratings, detent counts, and connector lengths. Contact sales for sample evaluation, dimensional drawings, and performance datasheets to confirm the exact variant for your vehicle program.