Reliable Aviation Solutions contactor JQ-47FH

Product Overview

The YM Military Aviation Contactor JQ-47FH 125A represents the pinnacle of high-capacity three-phase power switching technology for demanding aerospace applications. Engineered as a hermetically sealed three-phase contactor capable of handling 125A loads, this component is specifically designed for drone systems, aircraft engine controls, and critical aviation power distribution networks. As part of YM's specialized range of High Power Aviation Contactors and complementary to our Military Aviation Connectors, the JQ-47FH 125A is built to operate reliably alongside other critical systems such as Hydraulic Circuit Breakers and Aviation Magnetic Valves in the most challenging environmental conditions.

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Technical Specifications

Precision-engineered for high-current three-phase aerospace applications:

• Rated Current Capacity: 125A three-phase power switching capability
• Coil Power Consumption: 0.3W to 0.43W efficient operational range
• Contact Load & Electrical Life:
  • Resistive Load: 1A at 28V DC for 1×10⁶ operations
  • Low-Level Load: (10-50)μA at (10-50)mV for 1×10⁶ operations
• Contact Resistance: Initial ≤50mΩ; post-lifetime ≤200mΩ
• Switching Performance: Action time ≤4ms, release time ≤4ms (typical ≤3ms); requires (10-50)ms incentive pulse width
• Dielectric Strength: 500V RMS @ 50Hz (normal pressure); 250V RMS @ 50Hz (low pressure)
• Insulation Resistance: >500MΩ initially; >50MΩ after endurance testing
• Weight: Under 3 grams despite 125A capacity
• Sealing Performance: Leakage rate ≤1.0×10⁻³ Pa·cm³/s (hermetic metal seal)
• Operating Temperature: Rated for standard 25°C conditions
• Phase Configuration: Three-phase design for balanced high-current distribution

Product Features & Advantages

1. High-Capacity Three-Phase Design: Engineered for 125A three-phase power distribution, ideal for main power switching in aerospace systems.
2. Advanced Hermetic Metal Sealing: Incorporates proprietary Metal Sealing technology used in our Military Metal Relays, ensuring complete environmental protection.
3. Balanced High-Current Performance: Designed to maintain consistent contact performance across all three phases under 125A loads.
4. Enhanced Thermal Management: Optimized design minimizes heat generation at high currents, compatible with systems using Aviation Cold Air Solenoid Valves.
5. Compact High-Power Solution: Delivers 125A capacity in an ultra-lightweight package under 3 grams.

Installation & Integration Procedure

For optimal high-current three-phase system integration:

1. System Compatibility Verification: Confirm three-phase voltage and 125A current requirements match contactor specifications.
2. Phase Identification: Clearly identify and label L1, L2, L3 phases for proper connection sequence.
3. Secure High-Current Mounting: Install using robust mounting points with adequate clearance for heat dissipation.
4. Three-Phase High-Current Wiring: Connect each phase to corresponding terminals using appropriate gauge wiring.
5. Control Circuit Connection: Connect control signals to coil terminals, observing voltage specifications.
6. Comprehensive High-Current Testing: Perform phase balance, continuity, and load testing up to 125A capacity.

Application Scenarios

• Aircraft Main Power Distribution: Three-phase power switching in commercial and military Aircraft Electrical Systems.
• High-Power UAV & Drone Systems: Power management for large-scale drone propulsion and heavy payload systems.
• Aircraft Engine Starting Systems: High-current switching for jet engine and turboprop starting circuits.
• Aviation Ground Support Equipment: Power control in mobile ground power units and maintenance equipment.
• Military Field Power Systems: Three-phase power distribution in mobile command centers and field operations.
• Aviation Test & Simulation: High-power switching in aircraft test benches and training simulators.

Value for Procurement Teams: The JQ-47FH 125A provides reliable three-phase power control at 125A capacity in a compact, sealed package, reducing system complexity, improving power distribution efficiency, and enhancing overall system reliability for high-current aerospace applications while maintaining weight optimization.

Certifications & Compliance

Manufactured under aerospace-grade quality systems specifically designed for high-power applications. While specific certifications depend on application requirements, our production processes ensure performance consistency and reliability for three-phase power switching at 125A capacity. This commitment to quality is demonstrated across our product range including Military Pressure Sensors and Aviation Encoding Switches.

Customization Options

Available customization for specific high-current three-phase applications:

• Specific coil voltage configurations for different control system requirements
• Custom terminal arrangements for unique three-phase system integrations
• Specialized mounting configurations for existing aviation panel installations
• Application-specific current handling optimizations
• Custom identification and phase marking for maintenance clarity

Production & Quality Assurance

1. High-Current Component Selection: Specialized materials selected for 125A three-phase operation and durability.
2. Precision Three-Phase Assembly: Automated assembly ensuring balanced phase characteristics and consistent performance.
3. Hermetic Sealing Process: Advanced sealing techniques for high-power environmental protection in aerospace conditions.
4. Comprehensive Electrical Testing: 100% testing including phase balance verification, contact resistance measurement, and high-current performance validation.
5. Environmental Validation: Rigorous testing for vibration resistance, thermal performance under 125A load, and seal integrity verification.

This stringent quality approach, consistent with our production of Solid State Relays and Industrial Power Relays, ensures every JQ-47FH 125A delivers reliable three-phase performance in the most demanding aerospace power applications.