RS PRO Power Relay 115V AC Coil 6A 4PDT Plug-In Type 121-7800

The RS PRO Power Relay 121-7800 is a robust, industrial-grade relay designed for reliable switching of electrical loads in demanding control panel and equipment automation applications. With a 4PDT (four pole double throw) contact configuration, this relay enables controlled switching of multiple circuits simultaneously, making it ideal for complex industrial and commercial installations.

This model features an 115V AC coil, which matches standard industrial supply voltages, and supports a maximum switching current of 6A. Its plug-in terminal design makes installation and replacement straightforward, reducing downtime during maintenance. The relay is housed in a compact enclosure measuring 28 mm x 21.5 mm x 36 mm (LxWxH), which allows for high-density stacking in control cabinets.

RS PRO 121-7800 offers a host of operational features, including gold-plated silver alloy contacts that provide excellent conductivity and extended service life. The LED indicator allows operators to visually verify operational status at a glance, while the lockable test button and inspection window facilitate on-site testing and inspection without the need for removal or de-energizing the system. Its wide operating temperature range from -55°C to 70°C ensures consistent performance even in harsh industrial conditions.

Factory automation, process control, industrial machinery, and HVAC control are some key applications for this relay, benefiting from its versatile contact arrangement, reliability, and safety features. The relay is based on the RKF series platform and has been designed for compatibility with DIN rail-mounted sockets (available separately) common in control panels.

This relay complies with CE and RoHS standards for quality and environmental safety. Its silver alloy contacts provide low contact resistance (maximum 50 mΩ), and it offers excellent operation at both short and sustained loads. The coil power is rated at 180 W, and the device handles switching voltages up to 30V AC and 30V DC. Comprehensive details such as gold-plated contacts, plug-in terminal style, and visual indicators improve usability in both installation and troubleshooting workflows.

Whether in industrial automation, electrical control cabinets, HVAC units, or machine-building applications, RS PRO's 121-7800 Power Relay provides a reliable, easy-to-use component engineered for performance and longevity. For more relay options or other industrial control solutions, browse additional products in the RS PRO or Power Relay category at EnvMart.