Trust SSR technology with JCT1240Z – power without sparks or noise

JCT1240Z is a solid-state relay (SSR), a contactless optical relay designed for safe and reliable switching of AC (alternating current) circuits. Thanks to the use of a thyristor as the switching element, the relay offers high durability, resistance to wear, and complete elimination of arcing and noise commonly found in traditional mechanical relays. The integrated optical isolation between the control input and the output ensures full galvanic separation, minimizing the risk of electromagnetic interference and enhancing system safety. JCT1240Z is ideal for applications that require frequent AC load switching, such as heating systems, single-phase motors, industrial lighting, and HVAC automation.

Key features:

• Contactless design – no mechanical moving parts
• Designed for AC load switching
• Rated current: up to 40 A
• Operating voltage: up to 1200 V (Vdrm)
• Low trigger current: Igt = 35 mA
• Fast response time, no arcing during switching
• High resistance to vibration and long service life
• Compact housing, easy installation

Applications:

• Industrial automation – control of heaters, single-phase AC motors
• HVAC systems – switching loads such as heaters, fans, compressors
• Industrial lighting – especially AC loads (LEDs, halogen lamps)
• Household appliances – e.g., control of heating elements and motors
• Control systems – as an actuator in AC-powered circuits
• Applications requiring silent and fast switching with high switching cycles

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