Product Overview
The JZC-1M RG4.553.029G Military Metal Relay (also designated GJZC-1M 2C DPDT 27V) is a high‑reliability, hermetically sealed electromagnetic relay engineered for extreme aviation, drone, and military ground applications. Designed as a direct drop‑in replacement for Russian‑origin relays, it delivers consistent switching performance under severe vibration, temperature swings, and moisture exposure. Its Metal Sealed Military Relay construction ensures operational integrity in engine control units, UAV flight systems, and aircraft PCB boards, making it the preferred choice for defense upgrade programs and new‑generation unmanned platforms.
Technical Specifications
- Model Designation: JZC‑1M RG4.553.029G / GJZC‑1M 2C DPDT
- Coil Voltage (DC): 27V (compatible with 12V/24V variants upon request)
- Coil Power Consumption: (0.3–0.43)W – ultra‑low power for sensitive avionics
- Contact Form: DPDT (Double Pole Double Throw) / 2C, fully configurable for redundant circuits
- Contact Load Capacity: Resistive 1A at 28V DC; low‑level capability (10–50)μA at (10–50)mV
- Contact Resistance: Initial ≤50mΩ; after endurance ≤200mΩ
- Operate / Release Time: ≤4ms each, with incentive pulse width (10–50)ms
- Dielectric Strength: 500V RMS (normal pressure) / 250V RMS (low pressure)
- Insulation Resistance: >500MΩ initial; >50MΩ after high‑level life test
- Hermetic Sealing: Leakage rate ≤10⁻³ Pa·cm³/s – true Metal Sealing Relay integrity
- Weight: <3g – ideal for weight‑sensitive UAV and portable systems
- Temperature Range: -55°C to +125°C (operational)
The coil resistance is optimized for 27V DC systems, ensuring stable actuation in aircraft and drone power buses. As a true Military Aviation Relay, it meets the rigorous demands of engine start‑up sequencing, flight control redundancy, and power distribution.
Key Features & Competitive Advantages
- Hermetic Metal Case: Provides absolute protection against moisture, sand, fuel vapors, and altitude pressure changes – outperforming commercial PCB Board Relay and Automotive Relay designs.
- DPDT Versatility: The 2C configuration allows simultaneous switching of two independent loads, reducing component count in missile launchers, radar interfaces, and engine control units.
- Direct Replacement for Russian Relays: Form, fit, and function compatible with legacy designs – ideal for fleet modernization without rewiring.
- Low Coil Power & Fast Switching: 0.3–0.43W coil consumption minimizes thermal load on densely populated PCBs, while ≤4ms response supports time‑critical applications like Aviation Mixed Delay Relay circuits.
- Superior Contact Reliability: Precious metal contacts ensure stable low‑level signal switching (<50μA) – essential for sensitive telemetry and sensor systems.
- Built for Harsh Environments: Withstands MIL‑level vibration, shock, and temperature cycling, making it suitable for Relay for Aerospace and Military Systems as well as high‑vibration drone engines.
Compared to standard industrial relays, the JZC‑1M series incorporates enhanced magnetic circuit design and rigorous post‑sealing leak testing, delivering the longevity required for mission‑critical deployments.
Application Scenarios
- Unmanned Aerial Vehicles (UAV) & Drones: Engine control modules, payload switching, and flight termination systems – a trusted Aviation Relay for Drone, Aircraft Engine solution.
- Military Aircraft & Helicopters: Avionics power management, landing gear control, and communication relay panels.
- Ground Defense Systems: Missile launch containers, radar power sequencing, and mobile command post switching.
- Railway & High‑Reliability Transport: Signal interlocking, traction control, and safety‑critical switching – ideal as a High quality Aviation Engine relay for aircraft and Plane also adaptable to rail.
- Industrial & Energy Infrastructure: Backup power transfer, generator control, and grid protection where Industrial Power Relay reliability is mandatory.
By using this relay, system integrators achieve reverse polarity protection when combined with external diodes, and the hermetically sealed case eliminates contact contamination in dusty or chemically harsh environments.
Installation & Integration Guidelines
- Pre‑Installation Check: Verify model number RG4.553.029G and inspect for any shipping damage.
- PCB Layout & Pin Mapping: Confirm the DPDT pin assignment matches the circuit diagram; the 2C configuration supports two isolated changeover contacts.
- Soldering / Mounting: Use controlled‑temperature soldering (max 260°C for 5 seconds) to preserve the hermetic seal integrity.
- Coil Drive Consideration: For optimal lifetime, provide a clean DC supply with transient suppression – the relay works seamlessly with Built in coil transient suppression relay or external clamping diodes.
- Functional Test: After assembly, perform low‑level signal continuity and insulation resistance checks to validate installation.
For new designs, the JZC‑1M can be paired with Polarized Relay or Latching DPDT relay topologies to further reduce standby power in battery‑operated military equipment.
Certifications & Compliance
- Manufactured under ISO 9001:2015 quality management system
- Hermetic seal test per MIL‑PRF‑39016 / GOST requirements
- Dielectric strength and insulation resistance validated per military standards
- RoHS compliant upon request for global procurement
- Compatible with Military Aviation DC Relay and Military DC Relay specification guidelines
Each unit is batch‑tested for contact resistance, timing, and leak integrity, ensuring consistent performance in mission‑critical assemblies.
Customization Options
YUMU Electronics offers flexible adaptations to meet specific program needs:
- Coil Voltage Variants: 12V, 24V, and 48V DC versions available for different aircraft bus architectures.
- Contact Material Options: Gold‑plated or silver‑cadmium oxide for specialized load conditions.
- Special Marking: Customer part numbers, date codes, or NATO stock numbers printed on the metal housing.
- Enhanced Screening: Additional burn‑in, temperature cycling, or vibration testing per your quality plan.
Our engineering team leverages extensive experience with Polarized DPDT Relay, Latching 4DPDT relay, and Solid State Relay designs to support complex system upgrades.
Production & Quality Assurance Process
Each JZC‑1M RG4.553.029G relay undergoes a tightly controlled manufacturing flow:
- Material Selection: High‑grade metal enclosures and precision contact alloys sourced from qualified suppliers.
- Coil Winding & Assembly: Automated winding with real‑time resistance monitoring.
- Hermetic Sealing: Welded metal case in inert atmosphere, followed by helium leak testing.
- Environmental Stress Screening: Temperature cycling, random vibration, and mechanical shock per MIL‑STD‑810.
- Final Electrical Test: 100% inspection of operate/release time, contact resistance, and dielectric strength.
This process ensures the relay meets the demanding requirements of New Energy Relay reliability standards and surpasses typical PCB Signal Relay longevity in field use.
Why Choose the JZC‑1M Military Metal Relay
- Reduced Logistics Complexity: Direct replacement for Russian relay types, simplifying spares inventory.
- Enhanced Mission Readiness: Hermetic seal eliminates contamination‑related failures.
- Design Flexibility: DPDT contacts allow both signal and low‑power load switching in one compact package.
- Proven in Aviation & Drone Platforms: Deployed in engine control, payload management, and redundancy switching.
- Backed by YUMU’s Expertise: Years of experience with Military Electromagnetic Relays, Flash Relay , and Intermediate Power Relay technologies.
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