Allen-Bradley 836T-T253JX21X15 Pressure Control Switch

Allen-Bradley 836T-T253JX21X15 is a traditional machine-tool style pressure control switch (T‑Style) from Rockwell Automation designed to monitor pneumatic or hydraulic pressure and switch auxiliary circuits accordingly. It is rated for up to 600 V AC maximum and up to 5 A, making it suitable for driving relays or other control devices in industrial equipment. The unit typically ships with a 2‑circuit SPDT contact block and is available with LED pilot indicators in configurations such as X15 (Red LED, 24 V DC) and X21 (Red LED with a 5‑pin mini receptacle), enabling clear status signaling in control panels. The enclosure supports Industrial Type 1, 4 and 13 environments, aligning with common machine-tool and harsh factory settings. Within the 836T family, multiple pressure ranges exist by configuration—for example, 10–70 psi or 12–70 psi in some variants, as well as higher ranges like 12–150 psi or 40–375 psi—so the exact range depends on the specific model within the 836T lineup. Official literature notes occasional surge pressures up to 15,000 psi, illustrating the switch’s ability to endure brief, high-pressure spikes typical in demanding hydraulic systems. This combination of robust voltage/current ratings, configurable pressure ranges, and LED/status options makes the 836T-T253JX21X15 a precise choice for precise pressure‑trigger control in industrial machines.