MSD High-Current Solid-State Relay

• The MSD High‑Current Solid‑State Relay is engineered to deliver efficient, high‑amperage control for multiple electrical accessories in custom, street, and performance applications
• Features four separate output channels capable of replacing up to four conventional relays, rated at 35 amps continuous per channel with a total combined capacity of 140 amps
• Provides surge capability of up to 100 amps for 8 seconds per channel, with the option to pair channels together to support higher‑draw components
• Designed for compatibility with either power‑side or ground‑side triggering and supports Pulse Width Modulation up to 150 Hz within a 50% to 90% duty cycle range
• Operates within a 7‑ to 20‑volt input range and incorporates built‑in safeguards for over‑temperature, short‑circuit, and overload conditions with automatic reset functionality
• Equipped with diagnostic LED status lights and a compact enclosure featuring adjustable mounting tabs for versatile installation
• Covered by a 1‑Year Warranty

Well planned electrical systems are essential in custom and performance builds. Running electric fans, fuel or water pumps, nitrous solenoids, and auxiliary lighting can quickly lead to multiple bulky relays and complex wiring. The MSD High-Current Solid-State Relay offers a streamlined solution for managing high amperage accessories with greater efficiency and cleaner installation.

This module can replace up to four traditional relays by providing four separate output channels. Each channel is rated for 35 amps of continuous current and can handle up to 100 amps for short 8 second bursts, with a total continuous capacity of 140 amps across the unit. Channels may be triggered by either a switched power or ground signal, and they can be combined in parallel when higher current capacity is required for a single device.

The relay supports Pulse Width Modulation (PWM) control up to 150 hertz, with an adjustable duty cycle range from 50 percent to 90 percent for compatible components that require variable speed or output control. Operating voltage ranges from 7 to 20 volts. Built-in safeguards include over-temperature, short circuit, and overload protection with automatic reset functionality. LED indicators provide diagnostic feedback to verify proper wiring and system status. The compact housing features mounting tabs that can be repositioned 90 degrees to accommodate different installation layouts. Offered in red or black finishes.

Designed to simplify wiring while delivering high current capability and modern protection features, this solid-state relay module is well suited for performance and custom vehicle electrical systems. Backed by a 1-Year Warranty.