P78 Series

The P78 series pressure controls may be used for control functions or limit functions, depending on model number. All models are provided with alarm contacts (except P78ALA). All standard models have phosphor bronze bellows and brass pressure connections. Models for use with ammonia are provided with stainless steel bellows and connectors. Devices certified according to PED 2014/68/EU Cat. IV have a double bellows on the high pressure side(s). Their IP54 classification means that these pressure controls are suitable for almost all applications. A special model is available with ATEX certification for applications using A3 refrigerants.

• High refrigerant pressure models available up to 42 bar setpoint range on the high pressure side 
• Generous wiring space
• Splash-proof enclosure (IP54)
• Trip-free manual reset on manual reset models
• Patented separate alarm contacts for both low pressure and high pressure cut-out (except P78ALA)
• Standard models suited to be used with A2L refrigerants
• ATEX model suited to be used with A3 refrigerants