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Samlex MSK-20A 20 Amp PWM Solar Charge Controller 12V/24V

Manufacturer

Samlex

<h3>About Samlex America</h3><p>Founded in 1991 and headquartered in Burnaby, British Columbia, <strong>Samlex America</strong> has grown into one of the most respected names in power conversion technology. With a commercial footprint spanning more than 90 countries, Samlex serves a remarkably wide range of industries — from communications and mobile fleet management to marine, RV, off-road, and fixed off-grid installations. Whether you need to power sensitive electronics in a remote cabin or keep a commercial work truck running smoothly in the field, Samlex engineers a solution built to last.</p><h3>A Complete Power Conversion Lineup</h3><p>What sets Samlex apart from one-trick-pony manufacturers is the sheer breadth and integration of their product ecosystem. Their catalog spans AC-DC power supplies, DC-DC voltage converters, solar panels and kits, battery accessories, transfer switches, and solar charge controllers. At the heart of the lineup, however, are two product families that have earned Samlex its stellar industry reputation: <a href="/7541-samlex-power-inverter-14297">power inverters</a> and <a href="/7541-samlex-battery-charger-14307">battery chargers</a>.</p><p><a href="/7541-samlex-power-inverter-14297">Samlex power inverters</a> are available in both pure sine wave and modified sine wave configurations, covering an enormous range of wattage requirements. Pure sine wave models — like the flagship NTX and EVO&trade; Series — deliver power that is virtually identical in quality to utility grid power, making them ideal for sensitive electronics, medical devices, and modern appliances. For users who need dependable DC-to-AC conversion in RVs, boats, or work vehicles, Samlex inverters are a go-to choice trusted by engineers and hobbyists alike.</p><p>On the charging side, <a href="/7541-samlex-battery-charger-14307">Samlex battery chargers</a> employ switched-mode technology to deliver efficient, quiet, and intelligent charging across 12V and 24V platforms. Their chargers are compatible with a wide variety of battery chemistries — including flooded lead-acid, AGM, GEL, and lithium-ion — making them a versatile fit for everything from marine deep-cycle banks to off-grid energy storage systems.</p><h3>Industries Served</h3><p>Samlex&apos;s versatility is one of its most compelling traits. Their products are deployed across an impressive range of real-world applications:</p><ul style="list-style:disc"><li><strong>RV &amp; Camping:</strong> Stay powered on the road or at the campsite without relying on shore power or noisy generators.</li><li><strong>Marine:</strong> Reliable power conversion for onboard electronics, navigation systems, and creature comforts on the water.</li><li><strong>Mobile Fleet &amp; Work Trucks:</strong> Keep tools, lighting, and communication equipment running efficiently from your vehicle&apos;s battery system.</li><li><strong>Fixed Off-Grid:</strong> Pair Samlex inverters and chargers with solar panels for a complete, self-sufficient energy system.</li><li><strong>Communications:</strong> Mission-critical backup power for radio base stations, repeaters, and 24/7 communication infrastructure.</li><li><strong>OEM &amp; Commercial:</strong> Custom power solutions built to specification for industrial and commercial integration projects.</li></ul><h3>Built on a Foundation of Reliability</h3><p>Samlex&apos;s commitment to engineering quality is evident in the protection features baked into their products. Many units include multiple layers of fault monitoring — scanning for adverse conditions thousands of times per second — along with thermal management systems that activate cooling only when necessary to reduce noise and energy draw. It&apos;s this level of attention to detail that has made Samlex a trusted partner for demanding commercial and industrial markets worldwide for over three decades.</p>

Part Number

MSK-20A
09/12/2036 6:01 AM
Sale Price

$85.30

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Product Details

The Samlex MSK-20A is a 3-stage intelligent PWM solar charge controller designed for reliable battery charging in 12V or 24V systems. This microcontroller-based unit provides digital accuracy and fully automatic operation, making it ideal for off-grid solar installations, RVs, marine applications, and portable power systems.

Key Features:

  • 3-stage intelligent PWM charging technology for optimal battery health and longevity
  • Automatic battery voltage detection (12V or 24V)
  • 20 amp charging capacity with full output from -35°C to +50°C (-31°F to 122°F)
  • Comprehensive electronic protections: overheating, overcharging, over-discharge, overload, and short circuit
  • Reverse polarity protection for any combination of solar panel and battery connections
  • Compatible with optional MSK-TS external temperature sensor for temperature-compensated charging
  • Compact design: 6.28" x 3.2" x 1.89" and weighs just 0.66 lbs

Ideal Applications:

  • Recreational vehicles and service vehicles
  • Off-grid solar power systems
  • Portable solar charging kits
  • Boats and marine crafts
  • Field work stations and mobile offices
  • Telecommunications equipment

The MSK-20A's series-type PWM controller design ensures efficient charging while protecting your batteries from damage. The automatic voltage detection and wide operating temperature range make it a versatile solution for diverse solar charging applications.

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