SKU: 868232069

Simarine Battery Shunt 300A 2x Voltage, 2x Resistance, 1x Temperature

Sale price$162.82 Regular price$180.91
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Description

Simarine Battery Shunt 300A 2x Voltage, 2x Resistance, 1x TemperatureSimarine SC303 Active Combo Shunt: Comprehensive Battery and Tank Monitoring The Simarine SC303 Active Combo Shunt represents a significant upgrade for marine, caravan, and off grid power systems. Designed specifically for seamless integration with the PICO battery monitor, this advanced module combines precise high current sensing with versatile tank level and temperature monitoring. By consolidating multiple sensor inputs into a single unit, the

Simarine SC303 Active Combo Shunt: Comprehensive Battery and Tank Monitoring

The Simarine SC303 Active Combo Shunt represents a significant upgrade for marine, caravan, and off-grid power systems. Designed specifically for seamless integration with the PICO battery monitor, this advanced module combines precise high-current sensing with versatile tank level and temperature monitoring. By consolidating multiple sensor inputs into a single unit, the SC303 streamlines your wiring and provides a complete overview of your critical system data in one location.

High-Capacity Current Sensing for Heavy Loads

Engineered to handle substantial power demands, the SC303 provides continuous current monitoring up to 300A, making it highly effective for tracking heavy consumers like large inverters, bow and stern thrusters, and anchor winches. It is equally capable of monitoring high-output current generators such as shore power chargers, alternators, and solar panel arrays. With a peak current rating of 400A for under one minute and up to 700A for less than five minutes, this active shunt easily accommodates the starting surges of heavy-duty equipment without compromising accuracy.

Versatile Inputs for Complete System Visibility

Beyond standard battery tracking, the SC303 functions as a multi-purpose central monitoring hub. It features two dedicated voltage inputs compatible with systems up to 75V, making it highly adaptable for standard 12V, 24V, and 48V setups. Additionally, the unit incorporates two resistance inputs specifically designed for tracking fluid levels in fuel, fresh water, or grey water tanks. A dedicated socket for an NTC 10k temperature sensor allows you to keep a close eye on battery banks or ambient cabin temperatures, ensuring your critical equipment operates safely within acceptable thermal limits.

Robust Construction and Easy Integration

Built for the demanding conditions typically encountered in marine and mobile off-grid environments, the SC303 features heavy-duty M10 bolt terminals that ensure a secure, low-resistance connection for your main battery cables. Communication with your PICO display is handled effortlessly via dual SiCOM RJ9 data ports, allowing for simple data daisy-chaining with other Simarine expansion modules. A fully integrated 6-way screw terminal block further simplifies the connection of your secondary voltage and resistance sensors.

Key Features

  • Continuous 300A current monitoring with peak capacities up to 700A for heavy motor startups
  • Broad voltage compatibility up to 75V, perfectly suited for 12V, 24V, and 48V power applications
  • Two independent voltage inputs for monitoring secondary starting or auxiliary battery banks
  • Two resistance inputs for accurate, real-time fluid tank level tracking
  • Dedicated NTC 10k temperature sensor port for essential battery thermal monitoring
  • Heavy-duty M10 bolt terminals providing secure, high-current electrical connections
  • Dual SiCOM RJ9 ports for streamlined data communication and network expansion

Streamline Your Off-Grid Power Management

Whether you are upgrading an existing marine electrical system or outfitting a new off-grid caravan, precise system data is critical for reliable energy management. The SC303 eliminates the need for separate standalone tank monitors and voltage sensors, combining them into one highly accurate, easy-to-install package. Upgrade your power setup with the Simarine SC303 Active Combo Shunt today and gain total visibility over your battery capacity, power consumption, and essential fluid levels.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 868232069

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ashlynnk
Omaha, US
★★★★★ 4
Cute, comfortable waterproof boots (a little snug to put on)
Size: 7, Color: Velvet Tan/Gum 2
These are really cute Chelsea-style boots and feel very comfortable once they’re on. The waterproof material is great for wet weather and the sole feels sturdy with good traction. They look stylish enough to wear casually but still feel practical for rainy days. The only downside is they can be a little difficult to put on at first because the opening is somewhat snug, but once they’re on they fit well and feel supportive. Overall they’re a great waterproof boot and I’ve enjoyed wearing them.
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Reviewed in the United States on March 17, 2026
A
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Abby B
Dallas, US
★★★★★ 5
Surprisingly great for my wide feet and high instep!
Size: 10.5, Color: Velvet Tan/Gum 2
So thrilled I took a chance on these. Finding boots is impossible for me. I have wide feet, a super high instep, a bunion on one foot, and I wear a hard to find size (10.5). I ordered the 10.5 and 11 in these expecting I might need to size up for width (if I could even get them on). It was a struggle getting the 10.5s on the first time, and once I did they were somewhat uncomfortable on the top of my left foot. But I read that they would relax so decided to give it a go because I need waterproof boots for an upcoming trip and the 11s felt too long. After two days of light wear, they are already breaking in and I have no more discomfort. Getting them on is already easier and they are plenty wide enough and very comfortable to walk in. These are true to size. Super happy and worth a day of mild discomfort to break them in!
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Reviewed in the United States on March 7, 2026
E
Verified Purchase
EE
Chelsea, US
★★★★★ 5
Comfortable, sturdy, waterproof
Size: 9.5, Color: Black/Black
Loce, love, love these boots. Have walked ten miles with no foot pain around NYC. They go with everything and and are so comfortable. As they are waterproof/resistant, they get a little warm in high temps, but perfect three-season boots.
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Reviewed in the United States on May 17, 2026
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Kate
Cuba, US
★★★★★ 5
Super cute, comfortable, practical, love that they are slip on
Size: 10.5, Color: Tobacco/Black
I have worn these 2-3 times already. The first day was a school/work day so I was on my feet 9 hours and the only issue I had was with the side of the boot rubbing against my ankle. I just make sure I wear socks high enough to cover my ankles or jeans that go into the boots now for long wear days. Absolutely love them! They keep my feet dry in this snow( we live in Michigan). I had been looking for a pair like this for awhile now and was getting super frustrated that I couldn't find my size in any that I liked. I saw that they had these available in a 10.5 and I wear 11. I looked at the Sorel website reviews (since the amazon ones weren't super helpful on sizing) and they said that the boots ran big so I took a chance on the 10.5 fitting me. They fit perfect. I have long narrow feet but I could see where they would be tight or uncomfortable on someone with wider feet. I've been trying to find a pair for my mom now since she has boot envy.
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Reviewed in the United States on January 27, 2026
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Nicholle King
Whiting, US
★★★★★ 5
Worth it.
Size: 8.5, Color: Crushed Clay/Gum 2
Love all my Sorels. These were really cute, good color, comfortable, warm, fit well, good quality and sturdy. I would order again.
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Reviewed in the United States on March 26, 2026

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