{"product_id":"apl185694","title":"Hella Marine Mini ISO Relay, 12V, 5-Pin, SPDT, 20\/40A, Diode Coil Suppression, IP54","description":"\u003ch6\u003eOverview\u003c\/h6\u003e\u003cp\u003eThe Hella Marine 007794041 is a 12V mini ISO relay with a 5-pin SPDT (Form C) contact set, rated for 40A continuous on the normally-open contact and 20A on the normally-closed contact (at 85°C). It carries an IP54 rating and uses diode coil suppression to reduce electrical noise back into the control circuit.\u003c\/p\u003e\u003cp\u003eOn a boat, this relay is a clean way to switch higher-current loads using a lower-current helm switch, keypad output, or automation trigger, without running heavy cable up to the console. It is sized for typical relay blocks and sockets and is well suited to protected electrical spaces where vibration and occasional splash are part of normal life onboard.\u003c\/p\u003e\u003ch6\u003eKey features\u003c\/h6\u003e\u003cul\u003e\n\u003cli\u003e12V nominal coil with pull-in at = 8.0V and drop-out at = 1.0V\u003c\/li\u003e\n\u003cli\u003eSPDT \/ Form C changeover contacts (terminals 30, 87, 87A) with coil terminals 85 and 86\u003c\/li\u003e\n\u003cli\u003eRated continuous load at 85°C: 40A (N\/O) and 20A (N\/C)\u003c\/li\u003e\n\u003cli\u003eInrush capability noted for demanding starts: up to 150A (lamp) and 166A (motor)\u003c\/li\u003e\n\u003cli\u003eSuppression diode across the coil to tame switching spikes on the control side\u003c\/li\u003e\n\u003cli\u003eIP54 rating with dust cover for use in protected compartments\u003c\/li\u003e\n\u003cli\u003eISO 8092 6.3 x 0.8 mm blade terminals with tin-plated contacts and AgSnO2 contact material\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch6\u003eCompatibility and fit\u003c\/h6\u003e\u003cp\u003eThis is a standard mini ISO, 5-terminal relay with 6.3 x 0.8 mm blades, making it compatible with many common relay sockets, relay blocks, and harness pigtails used in marine and vehicle electrical panels. The terminals are identified by the usual numbering on the relay body or socket, which helps keep troubleshooting straightforward later.\u003c\/p\u003e\u003cp\u003eIt is a 12V coil relay with a specified maximum coil voltage of 18V, so it is not a direct substitute for 24V coil relays. If your boat is 24V, confirm you have a 12V control feed available before ordering.\u003c\/p\u003e\u003ch6\u003eInstallation and setup\u003c\/h6\u003e\u003cp\u003eMount the relay where it stays out of direct spray and away from bilge water, using a supported socket or harness so the terminals are not carrying strain. Keep wiring runs to the load as short as practical and secure the harness so vibration does not work the connections loose.\u003c\/p\u003e\u003cp\u003eBecause the coil is diode-suppressed, the coil terminals are polarity-sensitive. Follow the + and - markings on the relay or socket when wiring the control side to avoid reverse connection.\u003c\/p\u003e\u003ch6\u003eElectrical and system integration\u003c\/h6\u003e\u003cp\u003eUse the relay so the high-current path stays close to your battery distribution or breaker panel, while the helm switch or control output only energizes the coil. Size wire gauge and overcurrent protection for the actual load and duty cycle, and keep continuous current within the stated contact ratings, especially in warmer compartments.\u003c\/p\u003e\u003cp\u003eLarge start-up surges are normal with motors and some lighting loads. The relay is specified for high inrush, but clean crimps, tight terminals, and correct fusing are still what make the system behave on the water.\u003c\/p\u003e\u003ch6\u003eUse cases on board\u003c\/h6\u003e\u003cp\u003eCommon uses include switching deck and cockpit lights, horns, ventilation fans, solenoids, and pump circuits where you want the control wiring to stay light while the load wiring stays short. It also fits well when an electronics output is only meant to trigger a relay coil, not carry load current directly.\u003c\/p\u003e\u003cp\u003eThis relay makes the most sense for owners who want a tidy, serviceable wiring layout and an easy-to-find standard footprint when replacements are needed later.\u003c\/p\u003e\u003ch6\u003eMaintenance and troubleshooting\u003c\/h6\u003e\u003cp\u003eIf a circuit cuts out under load, check the socket for heat discoloration, loose terminals, and corrosion before blaming the relay itself. A relay that clicks but does not pass power often points to a poor crimp, a loose spade in the socket, or a load that is pushing past the contact rating.\u003c\/p\u003e\u003cp\u003eIf the relay does not energize after a wiring change, confirm coil polarity at the socket since diode suppression requires correct + and - orientation.\u003c\/p\u003e","brand":"Hella Marine","offers":[{"title":"Default Title","offer_id":51558105088246,"sku":"APL185694","price":12.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/6658\/2518\/files\/0694011_apl185694_jpeg.jpg?v=1787895605","url":"https:\/\/www.apollolighting.com\/products\/apl185694","provider":"Apollo Lighting","version":"1.0","type":"link"}