Solid State Relays – PCB Mount PCB SIP SSR 280VAC 4A, 3-32VDC, ZC

MP240D4 – 4A AC Solid State Relay (Zero Cross) – Crydom

Optimize your industrial control systems with the Crydom MP240D4 solid state relay, designed for efficient AC load switching. This through-hole SSR delivers reliable performance with zero-crossing technology to minimize electrical noise, making it ideal for precision applications. PCX ensures genuine Crydom components with fast shipping and dedicated technical support.

Key Features

• 4A Load Current handling capacity
• Zero-Cross AC Output for reduced EMI
• Wide Input Range: 3-32VDC control voltage
• High Load Voltage: 24-280V AC
• Industrial Temperature Range: -40°C to +80°C
• Safety Certifications: CE, cURus approved

Technical Details

The MP240D4 features a SPST-NO (1 Form A) circuit configuration in a compact 4-SIP package with PC pin terminations. Its zero-cross detection ensures switching occurs at voltage minima, protecting sensitive components from inrush currents. With a through-hole mounting design, this relay integrates seamlessly into industrial PCBs while maintaining stable operation across extreme temperatures. Base product number: MP240D.

Typical Applications

• Industrial automation control panels
• HVAC system actuators and valves
• Medical equipment power management
• Lighting control systems
• PLC output modules

About Crydom

Crydom, now part of Sensata Technologies, is a global pioneer in solid state relay innovation with over 50 years of expertise. The brand sets industry standards for reliability in high-demand switching applications, from factory automation to renewable energy systems.

Renowned for rigorous quality control, Crydom SSRs undergo extensive validation testing for thermal performance, surge tolerance, and longevity. Their components consistently exceed industrial lifecycle expectations, making them the preferred choice for mission-critical installations worldwide.

About Solid State Relays (SSR)

Solid state relays provide silent, spark-free switching using semiconductor technology instead of mechanical contacts. Unlike electromechanical relays, SSRs offer faster response times, vibration resistance, and unlimited operational cycles with no wear-out mechanism.

Zero-cross SSRs like the MP240D4 are essential for AC loads where precise timing and electrical noise suppression are critical. They eliminate arcing during switching, reduce electromagnetic interference (EMI), and extend the lifespan of connected equipment – making them indispensable in modern industrial electronics.

Packaging

This product ships in Bulk packaging for production line integration. Contact PCX for reeled or custom packaging options.

Frequently Asked Questions

Question: What is the advantage of zero-cross switching?
Answer: Zero-cross activation synchronizes switching with AC voltage zero points, preventing current surges and reducing electromagnetic interference (EMI).

Question: Can this SSR handle inductive loads like motors?
Answer: Yes, the MP240D4 is rated for 4A resistive or inductive loads when used with appropriate heatsinking and voltage derating.

Question: Is an external heatsink required?
Answer: At full 4A load current, heatsinking is mandatory. Refer to the Crydom datasheet for thermal management guidelines.

Question: What isolation voltage does this relay provide?
Answer: The MP series typically offers 4,000V RMS input-to-output isolation. Confirm specifics in the technical datasheet.

Question: How does this SSR compare to mechanical relays?
Answer: SSRs have no moving parts, enabling silent operation, higher cycle life (>50 million operations), and bounce-free switching – ideal for high-speed controls.

Question: Are PCX-supplied Crydom relays authentic?
Answer: PCX exclusively sources components directly from authorized manufacturers, guaranteeing genuine Crydom products with full traceability.

Note: Product images are representational. Refer to datasheet for exact dimensions and specifications.

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