MSD Solid State Relay Block - Black, 4-Channel, 20A Continuous / 50A Momentary Per Channel | 75643

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This MSD Solid State Relay Block, finished in black, cleans up wiring by replacing 4 standard relays in a single compact module. Four independent channels can be activated using ei ther power or ground, with each channel capable of handling 50 amps for up to 8 seconds or 20 amps continuous, delivering up to 200 amps momentary or 80 amps constant combined.Specifications: Part Type: Multi-Purpose Relay Kit Color: Black Channel Count: 4 Amperage Rating: 20A continuous per channel, 50A for up to 8 seconds Combined Rating: Up to 200A momentary / 80A constant Part Number: 75643 Built-in over-temp, short circuit, and overload protection; mounting tabs rotate 90° for flexible installation, and channels can be run in parallel for loads exceeding a single channel's rating.FAQWhat's different about the MSD 75643 versus the 7564?They're functionally identical 4-channel, 20A-per-channel solid-state relay blocks; the 75643 is finished in black while the 7564 is red.What is each channel rated for?20 amps continuous, or 50 amps for up to 8 seconds, with a combined rating up to 200 amps momentary or 80 amps constant.What safety protection is built in?Automatic over-temp, short circuit, and overload protection, with LED status indicators per channel.{"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"What's different about the MSD 75643 versus the 7564?","acceptedAnswer":{"@type":"Answer","text":"They're functionally identical 4-channel, 20A-per-channel solid-state relay blocks; the 75643 is finished in black while the 7564 is red."}},{"@type":"Question","name":"What is each channel rated for?","acceptedAnswer":{"@type":"Answer","text":"20 amps continuous, or 50 amps for up to 8 seconds, with a combined rating up to 200 amps momentary or 80 amps constant."}},{"@type":"Question","name":"What safety protection is built in?","acceptedAnswer":{"@type":"Answer","text":"Automatic over-temp, short circuit, and overload protection, with LED status indicators per channel."}}]} Show more