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Arm-120-Acep - Triplex And Quadraplexor Controller-120 Vac, 3 Load, Soso Output Logic, Omit/Lead Select, Panel Mount - Atc Diversified

Brand: Atc Diversified
Part #: Arm-120-Acep
$384.33

List Price: $416.75
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Description / Arm-120-Acep - Triplex And Quadraplexor Controller-120 Vac, 3 Load, Soso Output Logic, Omit/Lead Select, Panel Mount - Atc Diversified

Triplex And Quadraplexor Controller-120 Vac, 3 Load, Soso Output Logic, Omit/Lead Select, Panel Mount
ATC Diversified • Industrial Electrical Controls • Sensert Connected
Arm-120-AcepAlternating Relay

ATC Diversified Arm-120-Acep replacement part, triplex and quadraplexor controller-120 vac, 3 load, soso output logic, omit/lead select, panel mount, ATC alternating relay industrial control

ATC Diversified alternating relay (Duplexor, Triplexor, or Quadraplexor) for load sequencing in multi-pump and multi-motor systems. An alternating relay automatically rotates which load runs first on each start command equalizing run time across 2 (Duplexor), 3 (Triplexor), or 4 (Quadraplexor) loads to prevent wear concentration on any single unit.

🔍 Application & Benefits

✖ Problems It Solves

  • ✖ One pump wearing out faster than others unequal run time distribution
  • ✖ Single pump running all the time while backup pumps sit idle
  • ✖ Manual lead/lag pump switching causing missed changeovers
  • ✖ No automatic pump alternation in duplex or triplex pump stations

✓ Key Benefits

  • ✓ Automatically alternates the lead load on every start cycle
  • ✓ Equalizes run time across all connected loads for even wear
  • ✓ Reduces maintenance frequency by distributing operating hours evenly
  • ✓ Plug-in or surface-mount models available for panel flexibility
  • ✓ Expandable models (ARA series) allow system capacity increases

🔧 Installation Overview

  1. Mount alternating relay on DIN rail or in plug-in socket per model type
  2. Wire load output contacts to each motor starter or contactor
  3. Connect control input to the demand signal (float switch, pressure switch, or controller)
  4. Apply power verify relay alternates lead contact on successive start commands
  5. Test all load outputs are cycling correctly before commissioning

📋 Specifications

DetailValue
Part NumberArm-120-Acep
BrandATC Diversified Electronics
Product TypeAlternating Relay
CategoryIndustrial Electrical Controls

❓ Common Questions

Q: What does Duplexor, Triplexor, and Quadraplexor mean?

A: These terms refer to the number of loads the alternating relay manages: a Duplexor alternates between 2 loads (e.g., two pumps in a duplex pump station), a Triplexor alternates among 3 loads, and a Quadraplexor among 4 loads. Each start command rotates which load runs first, ensuring equal operating hours across all units.

Q: What is a plug-in vs. surface-mount alternating relay?

A: Plug-in alternating relays install in a compatible ATC relay socket (DIN rail or surface mount) for easy replacement without rewiring. Surface-mount models have screw terminals built into the relay body and mount directly to a panel or DIN rail. Choose based on your panel design and whether quick-swap replacement is important.

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