ARP120A2R – Macromatic | Duplex Alternating Relay, 10 Amp, 120VAC, DPDT, 11 pin, selector switch

Description

The Macromatic ARP120A2R Alternating Relay is an essential component for any duplex pumping system, designed to extend the lifespan of your pumps by ensuring even wear. This intelligent relay automatically alternates between two loads (e.g., pumps) with each activation of the control switch. When the control switch closes, it energizes the designated “LOAD 1.” Upon the control switch opening, “LOAD 1” de-energizes, and the relay switches to “LOAD 2.” The next time the control switch closes, “LOAD 2” is energized. This systematic alternation prevents one pump from continuously bearing the workload, thereby reducing maintenance, optimizing efficiency, and providing a reliable solution for water and wastewater management, HVAC, and industrial control applications. Its clear LED indicators and robust design ensure dependable and straightforward operation.

Key Features

• Automatic Load Alternation: Systematically switches between two loads (e.g., pumps) with each control switch activation, ensuring equal operational time.
• Duplexing Capability: Manages lead and lag pump operation efficiently, ideal for two-pump systems.
• Visual Status Indicators: Features dedicated LEDs for “LOAD 1” and “LOAD 2” to clearly show which load is active.
• Selectable Operation: Includes a selector switch for “ALTERNATE,” “LOAD 1,” and “LOAD 2” modes, offering flexible control.
• High Current Output: Capable of switching up to 10A at 240V AC/24V DC, suitable for various motor loads.
• Long Operational Life: Designed for millions of mechanical operations and hundreds of thousands of full-load operations.
• Standard Socket Compatibility: Utilizes a standard 8-pin octal socket (Macromatic 70170-D recommended) for easy installation and replacement.

Specifications