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AIMS Power EMS18A Energy Management Switch 18A 120VAC Single Circuit Load Manager

Manufacturer

AIMS Power

<h3>About AIMS Power</h3><p>Founded in 2001 in a Reno, Nevada garage, AIMS Power has grown from a one-person passion project into one of the most recognized names in off-grid and backup power technology. <strong>Bruce de Jong</strong>, the company&apos;s founder and president, devoted countless hours to developing unique inverter designs that addressed real gaps in the renewable energy market — and that customer-first philosophy remains at the heart of everything AIMS Power does today.</p><h3>A Complete Off-Grid Power Ecosystem</h3><p>What sets AIMS Power apart from many competitors is the breadth of its product ecosystem. While the brand built its reputation on its extensive line of <a href="/16836-aims-power-power-inverter-14297">power inverters</a> — covering everything from compact 75-watt modified sine units to massive 12,000-watt pure sine models — it has since expanded into solar panels, deep-cycle AGM and LiFePO4 lithium batteries, MPPT solar charge controllers, portable solar generators, cables, and complete custom solar kits. This means customers can source an entire off-grid or backup power system from a single, trusted manufacturer.</p><p>The inverter lineup itself is remarkably diverse. AIMS Power offers both pure sine wave and modified sine wave inverters across 12V, 24V, and 48V DC inputs, with inverter-charger combos that include built-in transfer switches for seamless switching between battery and grid power. Several models carry ETL certification conforming to UL 458 and UL 1741 standards, making them suitable for RV manufacturers, work truck fleets, bus operators, and commercial OEM upfitters who require listed products.</p><h3>Built for Real-World Applications</h3><p>AIMS Power serves an unusually wide range of use cases. RV owners and overlanders rely on AIMS inverters and solar kits to stay powered far from the grid. Marine enthusiasts use their battery isolators and inverter-chargers to keep vessels running reliably. Emergency preparedness professionals count on AIMS systems for clean, dependable backup power when utility grids fail. The brand has also made significant inroads with industrial and commercial customers, supplying inverters to some of the most innovative organizations across the U.S. and internationally.</p><p>The company&apos;s lithium LiFePO4 battery line deserves special mention. Using only A-grade cells, AIMS Power batteries are engineered for up to 4,000 charge-discharge cycles — roughly twice what B-grade alternatives deliver. Combined with a sophisticated internal battery management system, these batteries maintain consistent output voltage right up until they&apos;re discharged, making them especially well-suited to sensitive electronics and critical backup applications.</p><h3>US-Based Support and Continuous Innovation</h3><p>One of AIMS Power&apos;s most appreciated differentiators is its commitment to U.S.-based technical support. The company operates a dedicated engineering and tech support facility in Reno and offers lifetime free technical assistance to customers, available by phone or email. This accessibility — combined with a willingness to work directly with customers and factories to solve design challenges — allows AIMS Power to iterate on its products faster than many larger competitors. For those who need tailored solutions, the brand also offers custom solar kits and works with OEMs and upfitters on application-specific builds.</p>

Part Number

EMS18A
06/21/2036 12:39 AM
Sale Price

$119.74

In Stock (8)

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Product Details

The AIMS Power EMS18A Energy Management Switch is a cost-effective power management solution designed for applications where two loads share a single 20A branch circuit powered by an inverter, shore power, or generator. By intelligently monitoring and managing current draw, the EMS prevents nuisance circuit breaker trips without requiring costly electrical upgrades.

The EMS features one input and two outputs. The primary (priority) load is wired to Circuit A and remains powered at all times. The secondary load is wired to Circuit B and is automatically shed when total current demand approaches the circuit limit. Once consumption drops back below the preset threshold of approximately 5A, power to the secondary load is automatically restored — no manual intervention required.

Key Features:

  • Automatically manages two loads on a single 20A branch circuit
  • Cuts power to secondary load when total current exceeds ~18A AC, preventing breaker trips
  • Automatically restores secondary load when current drops below ~5A
  • User-defined primary and secondary load assignments via wiring
  • Dip switch to control restore delay timing
  • 120 VAC input/output at 50/60 Hz
  • Maximum input/output current: 18A
  • Recommended wire gauge: 12 AWG minimum, 8 AWG maximum
  • Mounting holes center-to-center: 3.5 inches
  • Compact and lightweight at 2 lbs.
  • 1-year manufacturer warranty

Ideal for RVs, boats, off-grid cabins, work trucks, vans, and any setting where mid- to large-sized appliances share a single circuit and risk tripping a breaker if they cycle on simultaneously. Installation should be performed by a qualified technician; all wiring must comply with local, national, and regional electrical codes. Use copper conductors only.

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