XI'AN YUMU ELECTRONICS TECHNOLOGY CO.,LTD
Model No.: KJRC-220M
Brand: YM
Output: Dc
Relay Type: Telecom
Ambient Temperature: -65℃~125℃
Sinusoidalvibration: 20g,(10～2000)Hz
Random Vibration: 0.4g²/Hz,239.1m/s²
Cyclone: 4.39kPa
Coil Powerconsumption: ≤0.5W
Dielectric Withstandvoltage: Normal atmospheric pressure:500/350Vr.m.s., 50HzUn d e r lo w pr e s s u r e : 30 0 Vr . m . s. , 5 0 Hz
Contact Load Andlife: Resistance, 1A,28 Vd.c., 1×10⁵ timesLow level, (10-50) μA, (10-50) mV,1×10⁵ times
Insulation Resistance: ≥ 1 0 0 0 0 MQ
Contact Resistance: Initial value ≤50mΩ Life test after ≤100mΩ
Tightness: Leakage rate ≤10³ Pa · cm³/s
YM presents the KJRC-220M, a premium Military Metal Sealing Relay engineered for the most demanding applications. This Aviation DC Relay is designed as a high-performance, drop-in replacement for legacy Babcock BR44 Series and French Thomson YA19 relays. Built to stringent military and aviation standards, it ensures unmatched reliability in critical control systems.
As a robust Military Electromagnetic Relay, the KJRC-220M features a hermetically sealed metal enclosure, offering superior protection against harsh environmental factors including extreme pressure, vibration, and temperature fluctuations. It is the trusted choice for upgrading and maintaining systems where failure is not an option.
The KJRC-220M is a DPDT 8Pin 27V Relay with a Double-Pole Double-Throw (DPDT) configuration, providing versatile switching capabilities. Its core design principle centers on absolute reliability and longevity in military, aviation, and high-end industrial environments. The relay's primary function is to provide a robust, electrically isolated switching solution for low-level signal and intermediate power circuits within critical systems.
Core Advantages:
Direct replacement for Babcock Relay BR44 Series
High-quality alternative to French brand Thomson YA19
DPDT metal construction for compatibility with French brand systems
Coil Parameters: Standard coil voltage at 27V DC. Coil power consumption ranges from 0.3W to 0.43W.
Contact Configuration: DPDT (Double-Pole Double-Throw).
Contact Rating & Life:
Contact Resistance: Initial value ≤50mΩ; After lifespan test ≤200mΩ.
Timing Parameters: Action time ≤4ms; Release time ≤4ms; Excitation pulse width (10-50)ms.
Dielectric Strength: 500Vr.m.s., 50Hz at normal atmospheric pressure; 250Vr.m.s., 50Hz at low pressure.
Insulation Resistance: >500MΩ at normal atmospheric pressure; >50MΩ after high-level life test.
Sealing (Tightness): Leakage rate ≤1.0 x 10^-1 Pa·cm³/s.
Weight: <3 grams.
1. Hermetically Sealed Metal Enclosure: Unlike standard PCB Signal Relays or plastic-cased relays, the metal seal provides an impermeable barrier against moisture, dust, and corrosive gases, ensuring long-term stability. This makes it suitable as a Sealed Magnetic Latching Relay alternative in harsh environments.
2. Military & Aviation Grade Components: Every material and component is selected to meet or exceed the rigorous demands of military (MIL-SPEC) and aviation standards, guaranteeing performance where it matters most.
3. High Reliability & Long Life: Engineered for a minimum of 100,000 reliable operations under rated load, this relay minimizes maintenance cycles and system downtime, offering superior value compared to standard Industrial Power Relays.
4. Fast & Precise Switching: With action and release times under 4ms, it provides swift and accurate control response for sensitive Aviation Electronics and drone flight control systems.
5. Low Power Consumption: The efficient coil design consumes only 0.3-0.43W, making it suitable for energy-conscious applications, similar to advanced New Energy Relay designs.
6. YM Manufacturing Excellence: Produced in our certified facility with over 18 years of expertise in precision relay manufacturing, ensuring consistent quality and performance batch after batch.
The KJRC-220M is indispensable in scenarios demanding absolute reliability. Its value proposition lies in reducing system failure risk, extending maintenance intervals, and ensuring compliance with strict industry standards.
YM is committed to international standards. Our production processes for relays like the KJRC-220M adhere to rigorous quality management systems. While specific military qualifications (e.g., MIL-R-6106) are available upon request for large contracts, our standard manufacturing follows the principles of:
We can provide compliant documentation and support customer audit processes.
As a specialist manufacturer, YM offers extensive customization to meet exact application needs, similar to our capabilities for Polarized Relay JH-2S and Aviation Latching Relay products.
Available Customization Options:
We welcome OEM and ODM inquiries for large-volume projects.
Our manufacturing ensures every KJRC-220M meets its promised specifications. The process integrates YM's expertise across various relay types, from Solid State Relays to精密磁保持继电器。
Q1: Is the KJRC-220M a direct mechanical and electrical replacement for the Babcock BR44?
A1: Yes. The KJRC-220M is designed to be a form-fit-function replacement, matching the pinout, dimensions, and key electrical characteristics of the Babcock BR44 series and Thomson YA19.
Q2: What is the key difference between this metal-sealed relay and a standard plastic PCB relay?
A2: The metal hermetic seal provides superior environmental protection against humidity, altitude (low pressure), and corrosive atmospheres, which is critical for aviation/military use. Plastic relays may allow moisture ingress over time.
Q3: Can this relay be used for both low-level signal switching and power switching?
A3: Its design is optimized for reliable low-level signal switching (μA level) as specified. While it can handle 1A/28V DC resistive loads, for higher power applications, we recommend consulting our range of dedicated Industrial Power Relays.
Q4: What is the operating temperature range?
A4: While the core data specifies parameters at 25°C, the military-grade construction typically supports an extended range (e.g., -55°C to +125°C). Please contact us for the detailed environmental specification sheet.
Q5: Do you provide samples for testing and qualification?
A5: Yes, we provide a limited number of evaluation samples for qualified B2B clients. Please contact our sales team with your company details and application requirements to arrange a sample request.
Q6: What is the typical lead time for production orders?
A6: For standard KJRC-220M units, lead time is typically 4-6 weeks. For customized versions, lead time will be determined based on the specific requirements.
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