Honeywell – T675A1003/B T675A/B and T678A Temperature Controllers

T675A/B and T678A temperature controllers regulate the temperature of air or liquids in ducts, pipes, tanks, and boilers. Typical uses include control of dampers and valves in heating, cooling, or heating-cooling systems. Features & Benefits:

T675A has one single-pole, double-throw (SPDT) switch that breaks R-B and makes R-W at the setpoint on temperature rise

T675B manual reset low limit has one single-pole, single-throw (SPST) switch that breaks at the setpoint on a temperature fall, and requires manual setting

T678A has two single-pole, double-throw (SPDT) switches that operate in sequence

T675A models available with adjustable differential

T675A and T678A have setpoint adjustment knob on front of case

Capillary tubing allows remote mounting of sensing element; models available with various lengths

T675A and T678A models available with a fast-response sensing element

Controller can be mounted in any position

Mounting accessories available for all applications

Ambient temperature compensated

Honeywell Honeywell BMS NA T675A1003/B — T675A/B and T678A temperature controllers regulate the temperature of air or liquids in ducts, pipes, tanks, and boilers. Typical uses include control of dampers and valves in heating, cooling, or heating-cooling systems. Discontinued by Honeywell — no longer in the current range. PartnerPLC sources new, surplus and discontinued Honeywell parts — request a quote for price, condition and lead time.

Specifications