Electromagnetic relay, 4PDT 48VAC, 7A/250VAC, model EB1417999327

Electromagnetic relay EB1417999327 is a 4-pole double-throw (4PDT) switching device with a 48 VAC coil rating and contacts rated for 7 A at 250 VAC. It is designed for electrical control and signal switching in industrial equipment, control panels and automation systems. The relay allows isolated switching of multiple circuits in a compact package, enabling organized wiring and simultaneous control of several loads or signal paths.

Advantages

This 4PDT relay combines multiple changeover contacts in a single component, reducing the need for several separate relays and saving panel space. The 48 VAC coil provides compatibility with common control voltages in industrial and HVAC installations, while the 7 A/250 VAC contact rating suits many general-purpose switching tasks. The physical arrangement of four poles with double-throw contacts simplifies wiring layouts for multi-circuit control and minimizes cross-talk between circuits due to contact isolation.

Suitable for

• Switching and routing signals in control panels and PLC interfaces
• Controlling motors, fans and valves in HVAC systems (within contact ratings)
• Multiplexing power or signal lines in industrial automation
• Isolated switching of sensors, indicators and auxiliary circuits

Key specifications

• Contact configuration: 4 poles, double-throw (4PDT)
• Coil voltage: 48 VAC
• Contact rating: 7 A at 250 VAC
• Contact type: changeover (form C)
• Typical mounting: panel or socket mounting (check socket compatibility)

How to use

Install the relay into a compatible socket or mounting position following the manufacturer’s mechanical and electrical installation instructions. Connect coil supply lines to the coil terminals with 48 VAC control voltage, observing correct polarity if required by the socket. Wire the common, normally open and normally closed contacts to the circuits you intend to switch, ensuring load currents do not exceed the 7 A/250 VAC contact rating. Verify terminal tightness and insulation clearances, and incorporate appropriate fuses, circuit breakers or protective devices in the controlled circuits as required by regulations and application specifics.

Usage recommendations

Use the relay within its specified coil voltage and contact current limits. For inductive loads such as motors or solenoids, add suppression components or use contacts with adequate protection to reduce arcing and extend contact life. Perform routine inspections of contact condition and terminal connections in high-cycle applications to ensure reliable operation.