Crydom HD Series Solid State Relay 50A, Panel Mount, 48 - 530V AC Load, 32V Control, HD4850

The Crydom HD Series HD4850 Solid State Relay is an advanced switching device designed for demanding industrial and automation control requirements. With its 50A maximum load capacity and a broad 48V to 530V AC load operating voltage, this relay is well suited for a variety of control and power distribution applications, particularly where high reliability and rapid solid-state switching are desired.

This model is equipped with a 32V DC control input, enabling efficient, fast switching without the drawbacks associated with mechanical contacts. Its panel mounting configuration and robust screw terminals streamline installation and ensure secure electrical connections in a range of panel assemblies or equipment enclosures.

Built with an aluminum baseplate, the HD4850 is both impact- and corrosion-resistant. Designed to operate safely in challenging industrial environments, it features a flame-retardant housing that extinguishes burning in less than 10 seconds, providing enhanced safety in case of electrical faults or fire risks. The relay exhibits minimal wear over time as it contains no moving parts, resulting in a long service life and high mean time between failure (MTBF).

With a compact footprint measuring 58.4mm in length, 22.6mm in width, and 23mm in height, this relay is ideal for dense control panels or retrofitting into systems with limited space. It achieves a protection level of IP20, safeguarding users and equipment against incidental contact and dust. The low I/O capacitance of 8 pF ensures high-fidelity output signals, crucial for applications demanding signal integrity and precise control.

The output type of this relay is SCR, guaranteeing silent and consistent operation. It also maintains reliable performance across a wide ambient temperature range, from -40°C to +80°C, proving suitable for harsh industrial sites and environments with significant temperature swings. The device complies with key safety and performance standards, including CSA and UR, along with RoHS environmental directives.

Common industrial applications for the Crydom HD4850 include switching of resistive, capacitive, and inductive loads in automation panels, process control installations, HVAC/R systems, packaging machinery, and high-cycle or high-speed switching environments. It is commonly used where failure resistance, shock and vibration immunity, and electrical isolation are priorities.

When panel mounting, the relay should be installed with a suitable heatsink to ensure thermal management and long-term operational stability. Proper mounting and adherence to ambient derating guidelines ensure maximum reliability and service life.

Explore more Crydom components and solid state switching solutions in the EnvMart Solid State Relay category for comprehensive selection and technical support.