Item ID: 72641

SmartFuse 75-250A / 12V / 24V programable Fuse with Battery Protect

6 current values 75A-250A programable, as Battery main switch usable, 4 shutdown voltage programs

Item number SF250AMTP

Weight ,shipped as package ,shipped as bulky goods ,shipped by forwarding company, free curbside

* Incl. VAT excl. Shipping * Excl. VAT excl. Shipping
Legal information on the delivery date: 1 to 2 business days** Legal information on the delivery date: 2 to 3 business days** Legal information on the delivery date: 2 to 3 business days**

Smartfuse, programmable fuse with under voltage / over voltage protection

6 current values (75, 100, 125, 150, 200, 250A) and 4 under voltage programs selectable

for Boat, Yacht, Caravan, Motor home, RV ....


The SmartFuse is an Battery Guard/Protect + „Fuse“ which can detect under voltage, over voltage, over current (overload) and disconnect the circuit. The voltage- and current values are programmable.

The SmartFuse can be used with a (little) remote switch as a Battery(Main)Switch.

Instead of three different individual products, you have with one SmartFuse reducing in costs in purchasing and installation time.

After shutdown (SmartFuse) the consumers by under voltage from the battery, the SmartFuse let charge current through to the battery from the charger, while load is disconnected. For example, by a “combi” inverter (inverter/charger/AC transfer switch combination) so that the battery can be recharged. Only when the “on” voltage has reached from the SmartFuse, then is it possible to get again current/power from the battery.


  • Battery Guard/Protect which can detect under voltage, over voltage, over current (overload) and disconnect the circuit.
  • Programmable electronic fuse => Six current values 75-250A
  • To connect the equipment safely without any spark at the battery
  • Battery Main Switch=> Activate or de-activate the SmartFuse is possible with a (little) remote switch
  • After overload/over current shutdown=>Activation with a pushbutton
  • To prevent deep discharge of the battery => Four under voltage programs
  • Charging the battery is possible in case of under voltage shutdown (disconnecting user)
  • Reverse polarity protection of plus / minus battery
  • SmartFuse is fast with overload, normal fuse is slow. No sticking or burning in of contacts possible, likewise no sparks or oxidation of the contacts, as with large DC currents, by use a relay happens.
  • High overload capability (ideal for starting 'Serious' heavy load)
  • Over voltage shutdown (>16V@12V mode, >32V@24V mode)
  • Watertight IP67 housing

Delivery contains:

  • SmartFuse SF250A with mounting plate

Weitere hilfreiche Tipps finden Sie in unserer FAQ Fragen/Antworten Seite unter nachfolgendem Link: FAQ Seite

  • Input voltage: 12 / 24V auto detect
  • Output current nominal: 250A (acc. selected fuse value)
  • Output current max: 500A (5 sec.)
  • selectable Fuse current values (±20%): 75A, 100A, 125A, 150A, 200A, 250A
  • selectable under voltage programs: 4
  • Over voltage protection: >16,0V DC @ 12V mode, >32V DC @ 24V mode
  • Standby curent: 5mA (active), 1,5mA (switched off)
  • Alarm contact: max. 1A (12/24V DC)
  • Alarm-LED: under voltage, over voltage, polarity, On
  • Battery / Load Terminals: M8
  • Minus / Alarm / Reset Terminals: 6,3mm flate plate connectors (push-on)
  • Reverse polarity protection
  • Watertight: IP67
  • Dimensions (L x W x T): 117 x 100 x 50 mm incl. mounting plate
  • Weight: 0,5kg (ohne Verpackung)
Program Fuse value DC cable cross section (L <5m)
1 75A Ø 25mm²
2 100A Ø 35mm²
3 125A Ø 50mm²
4 150A Ø 50mm²
5 200A Ø 70mm²
6 250A Ø 95mm²
Program Under voltage threshold Under voltage reconnect
1 10,5 / 21,0V 12,8 / 25,6V
2 10,0 / 20,0V 12,8 / 25,6V
3 9,5 / 19,0V 12,8 / 25,6V
4 11,3 / 22,6V 12,8 / 25,6V
Do you still have questions about the order process or the article?

Simply contact a member of our customer service team.

You can reach us by telephone from Monday to Friday between 8:00 am and 6:00 pm.
Tel.: 06024 6341 560 or by fax under 06024 6341 569
Of course you can also contact us by e-mail:

Would you like to have a look at the goods beforehand or would you like a personal consultation on site?

No problem, you are welcome to view all products in our exhibition area.
Of course we are at your disposal for a personal consultation.
Monday to Friday between 8:00 am and 6:00 pm

What payment methods are available to you?

Cash payment / EC card payment when picking up at the store in Schöllkrippen
bank transfer / prepayment
Cash on delivery (you pay directly to the parcel deliverer upon receipt)
PayPal including buyer protection (for EU countries as well as Liechtenstein, Norway, Iceland)
Credit card (Visa / Master)

How long does it take to ship the goods?

The stock status is indicated online on the respective product page. Products in stock will be shipped immediately or after receipt of payment, depending on the payment method. The shipment of goods that can be shipped by parcel is carried out to all countries of delivery by DHL. The parcel delivery times in Germany are 1-2 working days. DHL also delivers on Saturdays in Germany. We ship shipping goods via the shipping company Emons, the transit times are 2-3 working days within Germany, abroad this can not be specified flat rate, please contact us.
 high quality goods
 huge warehouse
 best service
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