Military Aviation Switch AN24-2H DPST

Product Overview

The AN24-2H DPST Military Aviation Switch is a rugged, double-pole single-throw (DPST) rocker switch designed for demanding aerospace, drone, and railway environments. This aviation switch with Military Grade provides simultaneous on/off control for two independent circuits, making it ideal for redundant power switching, dual motor control, and fail-safe systems in aircraft engines, drones, and trains. Rated for 28V DC / 10A per pole (20A total) and capable of switching low-level signals down to 10μA/10mV, the AN24-2H delivers low contact resistance (≤50mΩ), high insulation (>500MΩ), and excellent dielectric strength (500Vrms). Its sealed construction (IP67 front panel) protects against moisture, dust, and vibration, while the positive detent rocker provides clear tactile feedback. As a core product in YM’s aviation switch portfolio – which includes Aircraft Rocker Switches, Military Rocker Aviation Switch, Aircraft Swing Arm Switch, Micro switch, and certified aircraft rocker switches – the AN24-2H delivers uncompromised reliability for cockpit panels, engine control boxes, and ground support equipment.

Technical Specifications

Electrical Ratings (DPST – 2 independent circuits)

• Contact configuration: DPST (2 Form A) – 4 terminals (two independent normally-open pairs)
• Maximum voltage: 28V DC / 115V AC 400Hz
• Current rating per pole (resistive): 10A at 28V DC; 5A at 115V AC 400Hz
• Total current (both poles): 20A maximum
• Low level switching capability: 10μA – 50μA, 10mV – 50mV (gold-plated contacts available)
• Initial contact resistance: ≤50mΩ
• Insulation resistance (normal atmosphere): >500MΩ at 500V DC; after life test >50MΩ
• Dielectric strength (normal atmosphere): 500Vrms, 50Hz between poles and case; under low pressure: 250Vrms

Mechanical & Environmental

• Mechanical life: 50,000 cycles minimum
• Electrical life (rated load): 25,000 cycles minimum
• Actuator force: 5 – 8 N (rocker travel 25°)
• Sealing (tightness): IP67 front panel – leakage rate ≤10⁻³ Pa·cm³/s (silicone gasket)
• Operating temperature: -55°C to +85°C (aviation grade)
• Vibration resistance: 10g RMS, 10-2000Hz per MIL-STD-810
• Shock: 50g, 11ms half-sine
• Altitude: 50,000 feet (15,240m)
• Weight: <3g – ultra-light for airborne use
• Terminal style: 0.250” quick-connect or solder lug (4 terminals)
• Actuator options: Non-illuminated (standard), LED illuminated (red, green, amber), or NVIS compatible

Materials & Finishes

• Housing: Glass-filled nylon (UL94 V-0) – flame retardant
• Actuator: Polycarbonate with hard coat (black, white, or custom colors)
• Contacts: Silver-cadmium oxide (standard) or gold-plated (low-level signal)
• Terminals: Brass with tin or gold plating
• Panel seal: Silicone rubber gasket included

All parameters are validated at 25°C ambient. The AN24-2H meets MIL-PRF-8805 and RTCA/DO-160G requirements for airborne equipment.

Product Images & Visuals

Above: AN24-2H series DPST rocker switch (4-terminal, IP67 sealed). Contact YM for dimensional drawings, actuator color options, and environmental qualification reports.

Key Features & Advantages for Drone, Aircraft & Train Systems

• DPST configuration (two independent circuits): Simultaneously switches two loads (e.g., left and right engine igniters, dual battery banks, or redundant avionics buses) with a single actuator – reduces panel space and wiring complexity.
• Military-grade durability: Designed to MIL-PRF-8805, the AN24-2H withstands high vibration (10g RMS), shock (50g), and temperature extremes (-55°C to +85°C) – reliable for drone swarms, aircraft engine compartments, and railway rolling stock.
• Positive tactile feedback: Rocker mechanism provides distinct actuation feel and audible click, reducing pilot error during high-stress missions.
• Sealed construction (IP67, leakage ≤10⁻³ Pa·cm³/s): Front panel seal and gasket prevent ingress of moisture, dust, and fuel vapors – critical for unpressurized drone bays and outdoor train control panels.
• Low contact resistance & high isolation: ≤50mΩ initial resistance and >500MΩ insulation ensure reliable switching of engine sensors, actuators, and lighting circuits.
• Ultra-lightweight (<3g): Minimal impact on drone payload capacity – ideal for small UAVs and hand-launched systems.

YM’s engineering advantage: The AN24-2H shares proven sealing and contact technology with our Aviation Rocker Switch with military grade and military rocker switches families. For complete control systems, YM also offers military grade rotary switches, aviation encoding switch with military grade, gx Aviation Connector, and static encoder aviation – a one-stop solution for drone ground control stations, aircraft cockpits, and train driver cabins.

How to Install & Use the AN24-2H DPST Aviation Switch – Step by Step

1. Select the correct configuration: Verify that DPST (two independent normally-open circuits) meets your requirement. Each pole operates simultaneously when the rocker is pressed.
2. Panel cutout preparation: Standard cutout size: 21mm x 31mm (single rocker). Use a panel punch or CNC router for precise hole. Deburr edges.
3. Mounting: Insert the switch from the front of the panel. Secure using the snap-in clips (standard) – no additional hardware needed.
4. Wiring: Connect wires to the four 0.250” quick-connect terminals (poles 1 and 2). For DPST, each pole has an input and output terminal. Connect power sources to the input terminals and loads to the output terminals. Use MIL-spec wire (18-20 AWG).
5. Sealing (optional): If using a silicone boot seal, stretch it over the actuator before panel insertion. Ensure the boot flange seats flush against the panel.
6. Functional test: Apply power and rock the switch to ON position. Verify continuity across both poles using a multimeter (should be <50mΩ). For illuminated versions, check LED brightness.
7. Maintenance: Periodically inspect for cracked housing or loose terminals. Clean with a soft brush and isopropyl alcohol – do not immerse.

Pro tip for system integrators: Use the DPST configuration to implement redundancy – connect two independent power sources to each pole and feed critical loads (e.g., flight controller + GPS) for fail-safe operation. YM can provide custom legend engraving (e.g., “ENGINE 1/2”, “BAT A/B”).

Application Scenarios & Key Buyer Benefits

Typical Military & Commercial Uses

• Drone flight control: Dual battery isolation, payload power switching (camera + LiDAR), and flight termination systems (FTS).
• Aircraft engine control: Dual ignition systems, fuel pump redundancy, and starter relay enable – DPST switches both circuits simultaneously.
• Train & railway systems: Dual lighting circuits (headlights + cabin lights), door actuator control, and auxiliary power switching.
• Ground support equipment (GSE): Dual generator output switching, hydraulic pump control, and battery charger isolation.
• Military vehicles & naval systems: Redundant communication power, weapon system arming, and turret control.

Direct Value to International Buyers (Defense OEMs, UAV Manufacturers, Railway Integrators)

• Enhanced safety & redundancy: DPST design allows independent load switching with a single action – reduces pilot workload and prevents single-point failure.
• Reduced lifecycle cost: Hermetic sealing and corrosion-resistant terminals eliminate switch failures caused by moisture and dust – lowers spare parts consumption.
• Easy retrofitting: Standard panel cutout and 4-terminal spacing allow direct replacement of legacy DPST switches (e.g., Honeywell, Eaton, Carling) – no panel rework.
• Supply chain consolidation: The AN24-2H complements YM’s full line of aircraft rocker switches, aviation swing arm switch, press switch, and protect switch – one qualified source for all cockpit and drone control needs.

For new aircraft, drone, or train programs, YM offers custom actuator colors, legend engraving, and wire harness assembly. Engineering samples available for qualification testing.

Certifications & Compliance

• MIL-PRF-8805 (switches, sensitive, snap-action, general specification).
• MIL-STD-810G (environmental – temperature, humidity, vibration, shock, salt fog, altitude).
• MIL-STD-202 (test methods for electronic and electrical component parts).
• RTCA/DO-160G (airborne equipment – Category A2, S, and R).
• AS9100D (aerospace quality management).
• RoHS & REACH compliant – full material declaration available.

Each AN24-2H switch is 100% tested for contact resistance, dielectric strength, insulation resistance, and mechanical operation. Lot traceability per AS9100 is maintained. First Article Inspection (FAI) reports per AS9102 are provided upon request.

Customization Options

YM supports tailored AN24-2H variants for volume OEM orders. Customizations include:

• Illumination: Non-illuminated (standard), LED (red, green, amber, white, blue), incandescent (5V, 14V, 28V), or NVIS compatible.
• Actuator color & marking: Black, white, gray, red, yellow; laser engraved text or symbols (e.g., “ON-OFF”, “ENG1/ENG2”, “BAT A/B”).
• Sealing level: IP67 front panel (standard), IP68 (with boot), or unsealed (for dry applications).
• Terminal style: 0.250” quick-connect (standard), solder lug, or wire leads (pre-stripped).
• Contact material: Silver-cadmium oxide (standard, 10A), gold-plated (low-level, 1A), or palladium (dry circuit).
• Housing material: Glass-filled nylon (standard) or machined aluminum (EMI shielding).

Our engineering team provides free feasibility analysis and 3D models for integration. Minimum order quantities for custom options apply – contact YM with your specification sheet.

Production Process & Quality Assurance (AS9100D Certified)

YM’s aviation switch production line follows a zero-defect, fully traceable process designed to meet the stringent demands of military, drone, and railway customers.

• Raw material control: 100% certification of plastic resins, metal stampings, contacts, and wire – traceable to mill test reports and batch certificates.
• Precision molding & stamping: Automated injection molding (UL94 V-0) and high-speed contact stamping with in-process vision inspection.
• Contact riveting & assembly: Precision riveting of silver alloy contacts; dynamic force testing to ensure ≤50mΩ resistance per pole.
• Seal application: Silicone rubber gasket installation and panel seal leak testing per IP67 (helium mass spectrometry, leakage rate ≤10⁻³ Pa·cm³/s).
• 100% functional test: Automated test system measures contact resistance (each pole), insulation resistance (500V DC), dielectric strength (500Vrms), and actuator force.
• Environmental sample testing: Each lot undergoes thermal cycling (-55°C to +85°C, 20 cycles), vibration (10g RMS), and life cycle test (25,000 cycles at rated load).
• Final documentation: Dimensional report, electrical test record, C of C, and FAI (if required) provided with each shipment.

With decades of experience in Military Grade Switch and aviation encoding switch manufacturing, YM has supplied over 500,000 switches to global defense, drone, and railway customers. The AN24-2H DPST is built to exceed the reliability expectations of modern aircraft, UAV swarms, and high-speed trains.