STB55-1000-000 P.M.A STB 55 Temperature Limiter, 100 x 50mm Relay, 230 V ac Supply Voltage ON/OFF

PMA STB 55 Temperature Limiter_x000D_ The safety temperature limiter STB 55 is used wherever thermal processes need to be monitored, and the plant switched into a safe condition in case of a fault._x000D_ If the permissible temperature limit is reached or if a fault occurs in the monitoring equipment within the permissible temperature range (sensor break or short circuit, failure of a component within the device, fault in the software, failure or impermissible value of the supply voltage, etc.) the STB 55 switches off immediately. The alarm contact is activated, the “ALARM” LED in the front panel and the background lighting of the display light up, and the cause of the alarm appears in the display in plain text. In addition, a 24 VDC signal for external alarm signalling is available._x000D_ • Certified to EN 61508 SIL2 and EN 14597_x000D_ • Input from Pt 100 in 3-wire connection, or dual thermocouples type J, K, N and S_x000D_ • Programmable temperature limit and switching hysteresis_x000D_ • Basic error <0,5 %, ±2 digits_x000D_ • Response time 0,5s_x000D_ • 1 SPDT relay for alarm output_x000D_ • Memory function for error signalling_x000D_ • Operator lock (password protection)_x000D_ • Clips onto top-hat DIN rail_x000D_ • Convenient 4-key operation_x000D_ PMA Temperature Controllers