Military Aviation Metal Relay JRC-7M 27V

Military Metal Relay JRC-7M RG4.553.130.1 | Direct CII SR Series Replacement

Product Overview

The JRC-7M (Part Number: RG4.553.130.1) is a precision-engineered Military Metal Sealing Relay designed as an exact replacement for the CII brand SR series. With its standardized military part number and 27VDC coil, this Aviation DC Relay provides a reliable, drop-in solution for maintaining and upgrading critical drone and aircraft engine control systems where the original CII SR relay is specified.

Technical Specifications

• Model / Part No.: JRC-7M (RG4.553.130.1)
• Compatibility: Direct replacement for CII SR Series
• Coil Voltage: 27VDC Standard
• Contact Configuration: DPDT (2 Form C)
• Contact Rating: 1A @ 28VDC (Resistive)
• Coil Power: 0.3W - 0.43W
• Electrical Life: ≥100,000 operations
• Switching Time: ≤4ms Operate & Release
• Weight: <3g

Key Features & Advantages

• Exact CII SR Series Replacement: Guaranteed form, fit, and function compatibility, enabling seamless system maintenance without engineering changes.
• Standard Military Part Number: The RG4.553.130.1 designation facilitates easy identification, sourcing, and integration into existing military logistics and documentation systems.
• Hermetically Sealed Metal Construction: Provides superior environmental protection against moisture, dust, and vibration compared to standard PCB Signal Relays, ensuring long-term reliability.
• Optimized for High-Density PCBs: Compact design and reliable performance make it ideal for space-constrained PCB Board Relay applications in avionics and UAVs.
• Proven Military Electromagnetic Relay Design: Built for a minimum of 100,000 operations, offering dependable performance in mission-critical circuits.
• Metal Sealed Military Relay JRC-7M RG4.553.130.1 27V
• Military Metal Relay JRC-7M RG4 553 130 1 Replace of  CII Brand SR Series
• Aviation Relay with Military Grade Metal Design JRC-7M RG4.553.130.1 27V
• JRC-7M  Military Aviation Relay for Drone,Aircraft Engine PCB Board
• 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

Installation Guide

1. Verify Application: Confirm your system uses a CII SR series relay with part number RG4.553.130.1 or equivalent.
2. System Safety: Power down the equipment completely before beginning the replacement procedure.
3. Careful Removal: Desolder or unplug the existing SR series relay from the PCB Board Relay footprint.
4. Precise Installation: Align the JRC-7M pins correctly with the PCB holes, ensuring identical orientation to the original part.
5. Secure & Test: Solder the relay in place, then conduct thorough functional testing of the circuit.

Application Scenarios

This relay delivers critical value by providing a reliable, directly interchangeable component for systems dependent on the CII SR series. Primary applications include: Drone flight control and propulsion system boards, Aircraft engine FADEC (Full Authority Digital Engine Control) units, Military ground support equipment, Avionics instrumentation, and other high-reliability control systems. It serves as a robust, hermetically sealed alternative in circuits where a standard DPDT 8Pin 27V Relay in a commercial package would not meet the environmental or form-factor requirements.

Quality & Compliance

Manufactured in our ISO 9001 certified facility under a stringent quality management system. The JRC-7M is produced with processes designed to meet the performance and reliability standards consistent with military specifications, aligning with the quality upheld across our Military Metal Relay portfolio.

Customization Services

We offer OEM/ODM support for specialized projects. While the JRC-7M is a standard replacement, modifications such as custom marking, specific lot traceability, or additional screening tests can be arranged for volume orders, similar to services for our Polarized Relay JH-2S.

FAQ

Q: Is the JRC-7M (RG4.553.130.1) identical to the CII SR part it replaces?
A: Yes, it is designed as a direct form, fit, and functional equivalent, ensuring compatibility in all key aspects: electrical, mechanical, and performance.

Q: What is the significance of the RG4.553.130.1 part number?
A: This is a standardized military/national stock number (NSN)-style designation that aids in precise identification and procurement within defense and aerospace supply chains.

Q: Can this relay be used in new designs, or only as a replacement?
A: Absolutely. Its proven reliability, standard footprint, and military-grade construction make it an excellent choice for new high-reliability PCB Board Relay designs in aviation, military, and demanding Industrial Power Relay applications.

Q: Are samples available for verification testing?
A: Yes, we provide samples to qualified B2B customers for evaluation, compatibility confirmation, and qualification in their specific systems.