Barksdale T2H-H251-A-RD-R5 Temperature Switch

The Barksdale T2H-H251-A-RD-R5 Gold Line Temperature Switch is a dual remote-mount temperature switch in Barksdale’s T2H family, designed for precise monitoring and control of temperature-critical equipment. It provides two independent SPDT outputs for dual setpoint or monitoring configurations, with the RD option offering disconnection with manual reset for safety interlock on high-circuit operations. The rugged housing is die-cast aluminum, anodized, and rated IP65 with NEMA 4/13 compatibility, terminating through a 3/4" NPT entry with an internal screw terminal and a 6–12 mm cable gland for straightforward installation. The Gold Line variant (code 251) carries sensor temperature limits of -73°C to +149°C and, like the broader T2H line, supports a wide operating envelope, while offering remote sensing via a remote bulb/capillary option that can place the sensing element up to 25 feet from the switch. Rated for up to 10 A at 125/250 VAC (and 3 A at 480 VAC) in typical industrial use, this model is well suited to temperature monitoring and control in industrial equipment and process systems. The part number T2H-H251-A-RD-R5 is the manufacturer’s reference for this configuration, which can be specified with the RD‑Micro switch for manual‑reset disconnection in safety‑critical applications.