P77AAA-9351 P77和P78系列单压力和双压力控制器

P77和P78系列压力控制器主要设计用于高压和低压切断控制，泵降控制，冷凝器风扇循环以及商业制冷和空调应用的容量控制。
这些控制在几个压力范围内可用，并与大多数常见的制冷剂兼容。它们也可用于其他非腐蚀性流体应用。控制也可在几种不同的电气额定值和单极，双掷(SPDT)开关配置。
用于高压或低压应用的P77系列控制器专为商业制冷和空调应用的单压力控制而设计。
用于双压力应用的P78系列控制器主要用于商业制冷和空调应用的组合高压和低压控制。
特点和优点
•防溅外壳-为内部组件提供持久，坚固的保护。
•Sight-Set校准压力调节-显示一个可见的压力刻度，完全可调，通过范围，而无需拆除盖。
•手动复位锁定选项-提供无跳闸锁定，在压力恢复到指定水平之前不能覆盖或复位。
•宽敞的布线空间-提供充足的空间，便于布线和维护。

P77AAA-9351

The P77 and P78 Series Pressure Controls are designed primarily for high and low pressure cut-out control, pump-down control, condenser fan cycling, and capacity control on commercial refrigeration and air-conditioning applications.
These controls are available in several pressure ranges and are compatible with most common refrigerants. They may also be used on other noncorrosive fluid applications. Controls also are available in several different electrical ratings and Single-Pole, Double-Throw (SPDT) switch configurations.
The P77 Series Controls for high or low pressure applications are designed for single pressure control of commercial refrigeration and air-conditioning applications.
The P78 Series Controls for dual pressure applications are designed primarily for use as combination high and low pressure controls on commercial refrigeration and air-conditioning applications.
Features and Benefits
• Splash-Proof Enclosure—Built to provide long lasting, rugged protection for internal components.
• Sight-Set Calibrated Pressure Adjustment—Displays a visible pressure scale, fully adjustable through the range without removing the cover.
• Manual Reset Lockout Option—Provides trip-free lockout that cannot be overridden or reset until pressure returns to a specified level.
• Generous Wiring Space—Provides ample space for easy wiring and maintenance.