Johnson Controls - A70HA-1C - Two Circuit Temp Control
A70, A72 Series Temperature Controlsfor Refrigeration and Heating Application The A70 single-pole and A72 two-pole controls are supplied in a wide selection of ranges to meet most application needs. See “Temperature Ranges.” Models may be supplied to open a circuit on temperature increase or close a circuit on temperature increase as required. An A70 single-pole control may optionally include a separate reverse-acting auxiliary contact. Models are available with a SPDT enclosed Penn switch. All Series A70, A72 controls aredesigned for use only asoperating controls. Where anoperating control failure wouldresult in personal injury and/orloss of property, it is theresponsibility of the installer toadd devices (safety, limitcontrols) or systems (alarm,supervisory systems) thatprotect against, or warn of,control failure. Features·
Long life contact structure with high contact force right up to break - no bounce on make.
Make reset models are “trip-free”.
Ranges available to cover most applications.
Auxiliary contact can be used to actuate an alarm circuit when the main contact opens.
Two-pole construction provides a number of application advantages (see “General Description”).
Heavy gauge “low profile” stainless steel element cup to protect against mechanical damage.