Macurco GBC-120-4 Gas Boiler Controller, 120V, 4-Relay

Ensure fast, reliable boiler shutdown to protect personnel, property, and operations with the Macurco GBC-120-4 gas boiler controller. As a detector accessory designed for commercial gas detection systems, the GBC-120-4 provides centralized relay control to isolate boilers automatically when hazardous gas is detected, reducing risk and costly downtime. The controller ships with four 10A SPDT relays on a 120VAC supply and can be expanded via optional relay boards to individually control up to eight boilers—ideal for scalable facilities. A built-in 24VDC driver supports horn and strobe devices and the on-board audible buzzer delivers immediate local notification. Housed in an opaque polycarbonate NEMA 4X (IP66) enclosure, the GBC-120-4 stands up to demanding industrial and boiler room conditions for long-term reliability. Integrate this Macurco gas boiler controller with gas detectors, building monitoring, and security/surveillance systems to centralize alarm response and simplify maintenance. Add the GBC-120-4 to your safety and monitoring solution or contact us to configure it for your site.

• Automatic, reliable boiler shutdown to protect personnel and equipment and minimize downtime
• Scalable relay control: 4 on-board SPDT relays (120VAC) with optional expansion to individually shut down up to 8 boilers
• Built-in 24VDC horn/strobe driver and audible buzzer for integrated local alarm notification
• Rugged opaque polycarbonate NEMA 4X (IP66) enclosure for harsh industrial and boiler room environments
• Easy integration with gas detectors, building monitoring and security systems to centralize surveillance and response