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G3PF
G3PF Series – Solid State Contactors for Three-Phase Resistive Loads
The G3PF series represents a specialized category of solid state contactors (SSC) designed primarily for three-phase resistive loads such as industrial heating elements, ovens, and furnaces. These devices integrate a zero-crossing switching function to minimize electrical noise ...
G3PF Series – Solid State Contactors for Three-Phase Resistive Loads
The G3PF series represents a specialized category of solid state contactors (SSC) designed primarily for three-phase resistive loads such as industrial heating elements, ovens, and furnaces. These devices integrate a zero-crossing switching function to minimize electrical noise and inrush current, ensuring smooth operation and extended load life. Key technical parameters include rated operational voltages typically from 200 to 480 V AC, rated currents ranging from 25 A to 90 A per phase, and a built-in heat sink for efficient thermal management. The G3PF units are available in 3-pole configurations (3P) and feature an integrated overvoltage protection circuit. They are controlled via a DC input signal (commonly 12 to 24 V DC) and provide an alarm output for load burnout detection. In some markets, these are referred to as "solid state relays for three-phase loads" or "thyristor power controllers," though the G3PF specifically targets resistive applications without phase-angle control.
These solid state contactors are predominantly installed in industrial control panels, distribution boards, and automation cabinets where precise temperature regulation is critical. Common sectors include plastics processing (injection molding and extrusion), packaging machinery, food processing (ovens and dryers), and semiconductor manufacturing (diffusion furnaces). They are also widely used in HVAC systems for electric duct heaters and in chemical plants for reactor heating. The G3PF’s ability to handle high switching frequencies without mechanical wear makes it ideal for processes requiring frequent on/off cycles, such as in laboratory test chambers and environmental simulation equipment.
The G3PF series is organized into subcategories based on rated current and control voltage. Key article codes include G3PF-235B (25 A, 200-240 V AC), G3PF-435B (45 A, 380-480 V AC), G3PF-535B (55 A, 380-480 V AC), G3PF-635B (65 A, 380-480 V AC), and G3PF-935B (90 A, 380-480 V AC). The code structure follows the pattern G3PF-[current rating][voltage range]B, where the first digit indicates the current (e.g., 2 for 25 A, 4 for 45 A) and the subsequent digits denote the voltage range (e.g., 35 for 380-480 V). Accessories such as mounting brackets and heat sink compounds are also available but are not part of the main article codes.
At Electric Automation Network, we offer the complete G3PF series with real-time pricing and stock availability. Our engineering team provides personalized technical support to help you select the correct model based on your load type, ambient temperature, and mounting configuration. We ensure express worldwide shipping, with most orders dispatched within 24 hours. Additionally, each product listing includes detailed technical documentation, wiring diagrams, and thermal derating curves to facilitate seamless integration into your control system.
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