Aviation Polarized Relay JH-2S RX4.520.328

Polarized Relay JH-2S RX4.520.328 |JH-2S RX4.520.328A

Military Aviation Engine Maintenance Relay

Product Overview

The JH-2S (Military Part Number: RX4.520.328) is a specialized Polarized Relay JH-2S designed for critical aviation engine and military system applications. Unlike standard relays, this polarized design responds to the direction of current flow, making it ideal for sensitive detection and control circuits where discerning polarity is essential for safety and functionality in engine monitoring and maintenance systems.

Technical Specifications

• Model / Part No.: JH-2S (RX4.520.328 / RX4.520.328A)
• Type: Polarized, Metal Sealed DPDT
• Contact Rating: 1A @ 28VDC
• Coil Sensitivity: Responds to current polarity (typically μA-level sensitivity for detection)
• Coil Power: 0.3W - 0.43W
• Electrical Life: ≥100,000 operations
• Operate Time: ≤4ms
• Weight: <3g

Key Features & Advantages

• Polarity-Sensitive Operation: The core function that distinguishes it from all standard Military Electromagnetic Relays. It can detect the direction of current, enabling applications like ground fault detection, phase sequence monitoring, and directional current sensing in aviation engines.
• Military Part Number Compliance: RX4.520.328 designation ensures traceability and easy integration into military logistics and maintenance manuals for engine systems.
• High Sensitivity & Fast Response: Capable of responding to very low-level signals (μA/mV range) with a swift ≤4ms operate time, crucial for protective circuits.
• Hermetically Sealed Metal Housing: As a Military Metal Sealing Relay, it provides full environmental protection for the sensitive polarized mechanism against moisture, vibration, and contaminants.
• Proven in Harsh Environments: Designed specifically for the demanding conditions of Aviation engine maintainence and military field operations.
• Metal Sealed  Polarized Relay JH-2S RX4.520.328
• Military Polarized Relay for Drone,Aircraft Engine
• High quality Aviation Relay for Engine,Train,Plane.
• JH-2S RX4.520.328A Polarized Relay for Aviation engine maintain
• JH-2S RX4.520.328A Polarized Relay for Aviation engine maintain
• Metal Relay Designed for Aviation and Military Applications
• Aviation Relay with Military Grade Metal Design
• Military Aviation Relay for Drone,Aircraft Engine PCB Board 
• High quality Aviation relay for Engine,Train,Plane maintain

How It Works & Integration

1. Understand the Application: Identify if your circuit requires detection of current direction or polarity (e.g., monitoring generator output polarity, ground fault circuits).
2. Circuit Design: Integrate the JH-2S into the control loop where the coil current's direction will determine the contact state (NO/NC).
3. Precision Installation: Due to its sensitivity, ensure clean power and proper shielding during installation on the PCB Board Relay footprint to avoid false triggering.
4. Polarity Verification: During testing, verify that the relay switches correctly with the applied current polarity. Incorrect wiring will not activate the relay.
5. System Calibration: Calibrate the associated sensing circuitry to work with the relay's specific sensitivity thresholds.

Application Scenarios

This relay delivers unique value in specialized monitoring and safety circuits. Its ability to discern polarity is critical in: Aviation engine generator and starter system monitoring, Ground fault/interlock detection in aircraft power systems, Phase sequence protection in ground support equipment, Polarized signal routing in military communications, and sensitive measurement equipment. It fills a niche that standard DPDT 8Pin 27V Relays, Solid State Relays, or even Aviation Latching Relays cannot address.

Quality & Compliance

Manufactured under strict ISO 9001 quality protocols in our specialized facility. The production of the JH-2S involves precise calibration of the polarized mechanism and 100% functional testing to ensure accurate response to current direction, meeting the exacting standards required for aviation safety systems.

Customization Services

As a specialist component, we offer focused OEM/ODM support. Custom sensitivity levels, specific contact arrangements, or tailored military part number marking can be discussed for project-based volume requirements.

FAQ

Q: What is a polarized relay, and how is it different?
A: A polarized relay contains a permanent magnet. Its armature movement (and thus contact state) depends on the direction of the current through its coil, not just its presence. A standard relay only responds to the current's magnitude (on/off).

Q: Can I use this as a direct replacement for a standard DPDT relay?
A>No. Its operating principle is fundamentally different. It is designed for specific polarity-sensitive circuits, not general-purpose switching. Replacing a standard relay with a polarized one (or vice versa) will cause circuit malfunction.

Q: What does the 'A' suffix in RX4.520.328A indicate?
A: It typically denotes a minor revision or a specific manufacturer's variant within the same performance specification. The JH-2S core functionality remains the same.

Q: Is this relay suitable for New Energy applications like battery management?
A: Yes, its polarity detection capability can be highly valuable in New Energy Relay applications such as battery charge/discharge direction control or DC system fault detection.