Military Aviation Smart Metal Relay KJZC-4M

Military Metal Sealed Relay KJZC-4M | 4KPa 2A 28VDC | Smart HFW CII Replacement

Product Overview

The KJZC-4M is an advanced Military Metal Sealing Relay engineered as a direct, intelligent replacement for the HFW CII series. Designed for extreme low-pressure (4KPa) environments, this Aviation DC Relay combines robust metal hermetic sealing with reliable 2A switching capacity at 28VDC. It provides a smart, drop-in upgrade solution for legacy aerospace and defense systems where reliability is non-negotiable.

Technical Specifications

• Model: KJZC-4M (DPDT 8Pin Metal Sealed)
• Contact Rating: 2A @ 28VDC (Resistive Load)
• Coil Voltage: 27VDC Standard
• Coil Power: 0.3W - 0.43W
• Electrical Life: ≥100,000 operations
• Switching Time: ≤4ms Operate & Release
• Environmental Seal: 4KPa (Low Pressure Operation)
• Insulation: >500MΩ at normal atmosphere
• Weight: <3 grams

Key Features & Advantages

• Direct HFW CII Replacement: Exact form-fit-function compatibility enables seamless system maintenance and upgrades without redesign.
• Enhanced 2A Switching Capacity: Higher current rating compared to standard 1A relays, offering greater design flexibility as an Intermediate Power Relay.
• 4KPa Hermetic Sealing: Metal enclosure ensures reliable operation in high-altitude and low-pressure environments where standard PCB Board Relays would fail.
• High-Speed Performance: ≤4ms switching time meets the demands of rapid-response aviation and drone control systems.
• Long Operational Life: Engineered for 100,000+ cycles, reducing total cost of ownership through extended service intervals.

Integration Process

1. Verify existing relay model is HFW CII series and system voltage matches 27VDC.
2. Power down equipment completely and access the relay compartment.
3. Remove old HFW CII relay from its PCB Signal Relay footprint or socket.
4. Install KJZC-4M ensuring correct pin orientation and secure mounting.
5. Conduct comprehensive system functionality tests before returning to service.
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Application Scenarios

This relay delivers critical value by ensuring system continuity in demanding environments: Aircraft and UAV flight control systems, Military communications equipment, Satellite instrumentation power switching, High-altitude research vehicle electronics, and Railway signaling systems. Its reliability makes it a preferred alternative to complex Solid State Relay solutions in many military and aviation contexts.

Quality Assurance & Compliance

Manufactured under ISO 9001 quality management system in our SGS-audited facility. The KJZC-4M is produced following rigorous protocols that reference military and aerospace standards, ensuring batch-to-batch consistency. This disciplined approach is applied across our entire Military Metal Relay portfolio.

Customization Capabilities

We offer comprehensive OEM/ODM services. Custom coil voltages, pin configurations, marking, and performance validation can be tailored to specific project requirements, similar to our customization services for Polarized Relay JH-2S and other specialized components.

FAQ

Q: What does "4KPa" rating specifically mean for my application?
A: It certifies the relay maintains performance at low atmospheric pressure equivalent to high-altitude operation, crucial for aviation and aerospace systems.

Q: How does the 2A rating benefit me compared to 1A relays?
A: The higher current capacity allows control of slightly larger loads or provides additional design margin for increased system reliability and longevity.

Q: Is this a mechanical or solid-state relay?
A: The KJZC-4M is a Military Electromagnetic Relay (mechanical) with metal hermetic sealing, chosen for its proven reliability, isolation, and surge resistance in harsh environments.

Q: Can I get samples for qualification testing?
A: Yes, we provide samples to qualified B2B clients for evaluation and compatibility verification.