{"product_id":"victron-solidswitch-104","title":"Victron SolidSwitch 104","description":"\u003cul\u003e \u003cli\u003eOperating Input voltage range (Vbat): 8 – 70V DC\u003c\/li\u003e \u003cli\u003eMaximum load current: 4A\u003c\/li\u003e \u003cli\u003eMaximum capacitive load: Vbat up to 15V: 1000 µF 15V\u0026lt;Vbat\u0026lt;30V: 400 µF 30V\u0026lt;Vbat\u0026lt;70V: 50 µF\u003c\/li\u003e \u003cli\u003eMaximum inductive load: Up to 1A: 1000 mH 1A\u0026lt;I\u0026lt;2A: 100 mH More than 2A: 10 mH\u003c\/li\u003e \u003cli\u003eRemote input (Vin): Free floating or Vin\u0026lt; 3V: load off 3 3V \u0026lt; Vin \u0026lt; 70V: load on Min. input current to switch on: 30 µA\u003c\/li\u003e \u003cli\u003eOperating temperature: -20 to +50°C 0 - 120°F\u003c\/li\u003e \u003cli\u003eHumidity Max: 95% (non-condensing)\u003c\/li\u003e \u003cli\u003eProtection grade: IP20\u003c\/li\u003e \u003cli\u003eMaterial and colour: ABS matt black\u003c\/li\u003e \u003cli\u003eDimensions: 58 x 66 x 23 mm\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThe SolidSwitch 104 switches DC loads of up to 70V\/4A and can be controlled by a low power digital signal. It has three typical use cases:\u003c\/p\u003e \u003col\u003e \u003cli\u003eControl an external alternator regulator such as a Balmar or Mastervolt Alpha pro in a Victron lithium system.\u003c\/li\u003e \u003cli\u003eSwitch a DC load such as a light. A low power control circuit max current drawn will only be 100 μA can then control a load of up to 4 Amps.\u003c\/li\u003e \u003cli\u003eIncrease the number of chargers that can be wired to the ATC (allow-to-charge) output of a Victron BMS.\u003c\/li\u003e \u003c\/ol\u003e \u003ch3\u003eWhat is it that makes the SolidSwitch 104 unique?\u003c\/h3\u003e \u003cp\u003eThe feature making it such a usable switch is its low current draw. The SolidSwitch will draw 0.04 Ah a month while a small relay can easily take 10 Ah a month or typically even 22 Ah (*).\u003c\/p\u003e \u003cp\u003eThat reduction by a factor of 250 is crucial when using it in a lithium system to connect and control the alternator regulator: the control circuit will always be drawing its standby power. As well as when using it to increase the number of chargers that can be wired to a BMS ATC contact. By using a SolidSwitch rather than an ordinary relay the parasitic load is reduced to the order of magnitude of the battery bank self discharge.\u003c\/p\u003e \u003cp\u003eNote that even when the batteries are fully charged the ATC output of the BMS will still be enabled. And as such control circuits such as a relay or in this case the SolidSwitch will be enabled and drawing power. Even when the charger or alternator is not charging.\u003c\/p\u003e \u003cp\u003eFor this example that means that when using a relay the small relay draws 10Ah per month from the battery bank even when the engine isn’t running. While the SolidSwitch only draws 0 04Ah which is most likely far below the self-discharge of the batteries and thus neglectable.\u003c\/p\u003e \u003cp\u003e(*) If for example a 12V 1A relay with a 400 Ohm coil is used the current draw will be 30mA or 21.6 Ah per month.\u003c\/p\u003e \u003ch3\u003eCompatible Load types\u003c\/h3\u003e \u003cp\u003eThe DC load can be resistive capacitive or inductive (such as the coil of a high-power contactor). \u003c\/p\u003e","brand":"Victron","offers":[{"title":"Default","offer_id":59815684702542,"sku":"792-BMS800200104","price":38.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1043\/8914\/9006\/files\/792-bms800200104_1_e6eb07e3-b83d-4f4d-827b-b29ec9293917.jpg?v=1780700535","url":"https:\/\/southernyachtelectrics.store\/products\/victron-solidswitch-104","provider":"Southern Yacht Electrics","version":"1.0","type":"link"}