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 either 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.
FAQ
What'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.
