High-Reliability Power Control for Demanding Aerospace Applications
YM's JCQ-3H500F Military Aviation Contactor represents the pinnacle of reliability and performance in aerospace power switching. Engineered for critical applications in drones, aircraft engines, and various aviation subsystems, this hermetically sealed, high-power contactor is built to meet the stringent demands of military and commercial aviation. It ensures secure and efficient power management for engines, train systems, and auxiliary plane equipment, guaranteeing operational integrity under extreme conditions.
As a leader in precision components, YM also manufactures a comprehensive range including Military Metal Relay, Aviation Connector, and PCB Board Relay solutions, ensuring a complete portfolio for your aerospace electrical systems.
Features & Core Advantages
Designed for Ultimate Reliability and Performance
- Ultra-Low Power Coil: Exceptional efficiency with coil power consumption between 0.3W and 0.43W, reducing overall system energy load.
- High Reliability & Long Life: Proven contact lifespan of 1x10⁶ operations under rated load (1A, 28V DC resistive), ensuring durability for critical cycles.
- Superior Electrical Performance: Extremely low contact resistance (initial ≤50mΩ, post-life ≤200mΩ) and fast switching (action/release time ≤4ms) for precise power control.
- Military-Grade Sealing: Hermetic seal with a leakage rate ≤10⁻³ Pa·cm³/s, protecting internal components from moisture, dust, and corrosive atmospheres.
- Robust Insulation & Dielectric Strength: High insulation resistance (>500MΩ) and withstands 500Vr.m.s. at 50Hz (250Vr.m.s. at low pressure), ensuring safety and stability.
- Lightweight Aerospace Design: Weighing under 3 grams, it is optimized for weight-sensitive aviation and drone applications without compromising strength.
This contactor shares the same uncompromising quality standards applied to our Polarized Relay and Solid State Relay lines, ensuring seamless integration into complex vehicle systems.
Technical Specifications
Electrical Parameters
- Coil Power Consumption: (0.3 ~ 0.43) W
- Contact Load & Life: Resistive, 1A, 28V DC, 1 x 10⁶ operations. Low-level load: (10~50)μA, (10~50)mV, 1 x 10⁶ operations.
- Contact Resistance: Initial value ≤50mΩ. After life test ≤200mΩ.
- Time Parameters: Action time: ≤4ms. Release time: ≤4ms. Incentive pulse width: (10～50) ms.
Environmental & Mechanical Parameters
- Dielectric Withstand Voltage: 500Vr.m.s., 50Hz at normal atmospheric pressure; 250Vr.m.s., 50Hz at low pressure.
- Insulation Resistance: >500 MΩ at normal atmospheric pressure; >50 MΩ after high-level life test.
- Weight: < 3g
- Tightness (Sealing): Leakage rate ≤10⁻³ Pa·cm³/s.
- Coil Voltage (Vdc) at 25°C: Standard ratings available; refer to datasheet for specific model.
How to Integrate the JCQ-3H500F Contactor
- System Assessment: Verify that your application's voltage, current, and switching frequency match the contactor's specifications.
- Circuit Design: Integrate the contactor into the control circuit, ensuring proper coil drive circuitry (considering pulse width of 10-50ms) and protection for inductive loads if necessary.
- Mechanical Installation: Mount the contactor securely using appropriate hardware, avoiding stress on the terminals or casing.
- Electrical Connection: Solder or connect wires to the terminals as per the technical diagram, ensuring clean, secure joints. This process is similar to installing a high-grade Automotive Relay or Industrial Power Relay.
- Sealing Check (if applicable): For applications requiring environmental sealing, verify the integrity of the surrounding assembly to complement the contactor's own hermetic seal.
- Functional Testing: Perform low-power and full-load operational tests to verify switching performance, timing, and absence of overheating.
Application Scenarios
Critical Power Management Across Aerospace & Defense
- Drone Propulsion & Payload Systems: Reliable switching for motor controllers, gimbal power, and communication modules.
- Aircraft Engine Control Units (ECU): Managing power to sensors, actuators, and ignition systems within the engine bay.
- Auxiliary Power Units (APU) & Environmental Control Systems: Controlling fans, pumps, and valve actuators.
- Military Vehicle Electronics: Used in armored vehicles and naval systems for robust power distribution, often alongside Military Pressure Sensor and Hydraulic Circuit Breaker components.
- Ground Support Equipment: Power control in aircraft testing, charging, and maintenance platforms.
Its value extends to New Energy Relay applications in specialized transport, where high reliability is non-negotiable.
Value for International Buyers
- Enhanced System Reliability: Minimizes in-flight failures and maintenance downtime, directly lowering total cost of ownership.
- Weight & Space Optimization: The sub-3g weight contributes to fuel efficiency and allows for more compact avionics design.
- Reduced Operational Risk: Compliance with high dielectric and insulation standards mitigates risks of short circuits and electrical fires.
- Long-Term Supply Assurance: Backed by YM's vertically integrated manufacturing expertise in Aviation Microswitch and Aviation Rocker Switch production, ensuring consistent quality and supply chain stability.
Production & Quality Process
The JCQ-3H500F is manufactured under a rigorous quality management system. The process begins with precision machining of military-grade metal casings, followed by automated assembly of contacts and coils. Each unit undergoes 100% electrical testing for contact resistance, operate/release time, and dielectric strength. A final hermetic sealing test guarantees the specified leakage rate. This stringent process mirrors the quality applied to our PCB Signal Relay and Latching Relay families.
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