P77 Series

The P77 series pressure controls may be used for control functions or limit functions, depending on model number. All models are provided with alarm contacts. 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 conforming to PED 2014/68/EU Cat. IV (HP models) have the fail-safe function with double bellows. Their IP54 classification means that these pressure controls are suitable for almost all applications. Special models are available with ATEX certification for applications using A3 refrigerants.

• Generous wiring space
• Splash-proof enclosure (IP54)
• SPDT contacts
• Trip-free manual reset on manual reset models
• High refrigerant pressure models available up to 42 bar setpoint range
• Standard models suited to be used with A2L refrigerants
• ATEX models suited to be used with A3 refrigerants