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Top rated products
12V/240Ah AGM Deep Cycle Batt. (M8)
د.إ1,970.00The AGM range has very low internal resistance making them particularly suitable for high current discharge applications such as for inverters, thrusters and winches. VRLA AGM: design life 7-10 years
12V/165Ah AGM Deep Cycle Batt.
د.إ1,570.00The AGM range has very low internal resistance making them particularly suitable for high current discharge applications such as for inverters, thrusters and winches. VRLA AGM: design life 7-10 years
12V/110Ah AGM Deep Cycle Batt.
د.إ1,050.00The AGM range has very low internal resistance making them particularly suitable for high current discharge applications such as for inverters, thrusters and winches. VRLA AGM: design life 7-10 years
12V/90Ah AGM Deep Cycle Batt.
د.إ830.00The AGM range has very low internal resistance making them particularly suitable for high current discharge applications such as for inverters, thrusters and winches. VRLA AGM: design life 7-10 years
12V60Ah AGM Deep Cycle Batt.
د.إ570.00The AGM range has very low internal resistance making them particularly suitable for high current discharge applications such as for inverters, thrusters and winches. VRLA AGM: design life 7-10 years
12V38Ah AGM Deep Cycle Batt.
د.إ500.00The AGM range has very low internal resistance making them particularly suitable for high current discharge applications such as for inverters, thrusters and winches. VRLA AGM: design life 7-10 years.
12V22Ah AGM Deep Cycle Batt.
د.إ210.00The AGM range has very low internal resistance making them particularly suitable for high current discharge applications such as for inverters, thrusters and winches. VRLA AGM: design life 7-10 years
12V/14Ah AGM Deep Cycle Batt.
د.إ150.00The AGM range has very low internal resistance making them particularly suitable for high current discharge applications such as for inverters, thrusters and winches. VRLA AGM: design life 7-10 years
12V/8Ah AGM Deep Cycle Batt.
د.إ90.00The AGM range has very low internal resistance making them particularly suitable for high current discharge applications such as for inverters, thrusters and winches. VRLA AGM: design life 7-10 years
Galvanic Isolator VDI-64 A
د.إ1,100.00The galvanic isolator prevents electrolytic corrosion. It blocks low voltage DC currents that enter your boat via the shore power earth wire. These currents can cause corrosion to the boat’s underwater metals, like the hull, propeller, shaft and so on.
The galvanic isolator consists internally of two diodes which are connected in anti-parallel fashion. When they are connected in this way, the diodes allow current in both directions but only above a certain threshold voltage. The voltage at which diodes conduct is about 1.4 Vdc.
The isolator is installed directly behind your boat’s 230V connection. The forward voltage from the galvanic isolator is higher than the potential difference between metals. As a result, this voltage will not allow conduction and as such, the galvanic isolator will prevent any electrolytic current. However, if there is a (higher) error voltage in the AC circuit, the diodes will allow current through and the residual-current device will break the circuit.
Galvanic Isolator Waterproof (potted)
Maximum current 32 A
Peak current (20 ms) 3200 A
Connection M6
Heat sink
Material Anodized aluminium
Protection category IP 67
Galvanic Isolator VDI-32 A
د.إ890.00The galvanic isolator prevents electrolytic corrosion. It blocks low voltage DC currents that enter your boat via the shore power earth wire. These currents can cause corrosion to the boat’s underwater metals, like the hull, propeller, shaft and so on.
The galvanic isolator consists internally of two diodes which are connected in anti-parallel fashion. When they are connected in this way, the diodes allow current in both directions but only above a certain threshold voltage. The voltage at which diodes conduct is about 1.4 Vdc.
The isolator is installed directly behind your boat’s 230V connection. The forward voltage from the galvanic isolator is higher than the potential difference between metals. As a result, this voltage will not allow conduction and as such, the galvanic isolator will prevent any electrolytic current. However, if there is a (higher) error voltage in the AC circuit, the diodes will allow current through and the residual-current device will break the circuit.
Galvanic Isolator Waterproof (potted)
Maximum current 32 A
Peak current (20 ms) 3200 A
Connection M6
Heat sink
Material Anodized aluminium
Protection category IP 67
Isolation Trans.7000W 230V
د.إ3,420.00“Safety and prevention of galvanic corrosion
The Isolation Transformer eliminates any electrical continuity between AC shore power and the boat. It is essential for safety and eliminates the need for galvanic isolators and polarity alarms.
Safety is taken for granted in case of a normal on-shore installation. A fuse will blow or a GFCI (Ground Fault Current Interrupter) will trip in case of a short circuit or current leakage to ground. Connecting the ground wire of
the shore-side supply to the metal parts of the boat will result in galvanic corrosion (see below). Bringing only the
live and neutral wire on board results in an unsafe situation because GFCIs will not work nor will a fuse blow in
case of a short circuit to a metal part on the boat.
Galvanic corrosion occurs when two dissimilar metals in electrical contact are simultaneously exposed to an
electrically conducting fluid. Seawater and, to a lesser extent, fresh water are such fluids. In general, the more
active alloy of the couple corrodes preferentially while the less active (more noble) material is cathodically
protected. The rate of galvanic corrosion is a function of several variables including area ratios, conductivity of the
fluid, temperature, nature of the materials, etc.
It is a misunderstanding that galvanic corrosion occurs only in metal and aluminium hulls. In fact it can occur on
any boat as soon as a metallic part (the shaft and propeller) is in contact with water. Galvanic corrosion will
quickly dissolve your sacrificial anodes, and attack the shaft, propeller and other metal parts in contact with water
as soon as the boat is connected to the shore-side supply.
It might therefore be tempting not to connect the ground conductor: this is however extremely dangerous
because GFCIs will not work nor will a fuse blow in case of a short circuit to a metal part on the boat.”