SSRD-240DE40

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Solid State Relays

Solid state switches, such as SSR-240DE40, are remarkably reliable electronic devices. They are designed to switch an electrical signal on and off (open and close circuits) with no physical contact between the moving parts of the switch. As a result, they offer many advantages over traditional mechanical switches. They are extremely reliable, and their lifespan often eclipses other types of switches, even those designed to maintain long-term reliability with extensive maintenance.

SSRD-240DE40 application field and working principle

The SSRD-240DE40 is a zero-crossing, single-phase, AC output, solid-state relay. It is equipped with a zero-voltage detection circuit, which uses a combination of an opto-isolated AC signal, a trigger IC, and a precise control circuit to detect AC voltage output from a connected power source. The trigger IC then sends a signal to a driver circuit, which switches on the AC load via an output transistor. The SSRD-240DE40 is suitable for resistive loads, motors, control lighting, control heating, and contactors.

The SSRD-240DE40 offers several design features that make it well-suited for many applications, including:

• Turn-on and turn-off times of 5 to 10 ms, respectively.
• A screw-terminal connection block for attaching external test leads.
• High surge suppression capacity, allowing it to resist surges from external sources.
• A maximum through-current of 240A.

The SSRD-240DE40 is designed to work in high-temperature environments and has a wide operating temperature range, from 40°C to 75°C. It has a maximum contact resistance of 200mΩ, and a maximum dielectric strength of 2kV. It is also rated for a maximum ambient temperature of 60°C, with a maximum vibration of 0.6G. Additionally, the SSRD-240DE40 is RoHS and UL approved.

Overall, the SSRD-240DE40 can be an ideal solution for a variety of applications, due to its fast response time, high surge protection capacity, wide operating temperature range, and easy installation. Furthermore, its RoHS and UL approved ratings ensure it is safe to use and meets industry standards.

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