Description
Part Number: 75643-HC
MSD High-Current Solid-State Relay Block (4-Channel, Black)
Streamline high-amp race car wiring and replace four conventional mechanical relays with a single compact, high-performance solid-state module.
Key Features & Benefits
- ☑ Four independent channels rated at 35 Amps continuous each (140 Amps total continuous power)
- ☑ Supports high-surge loads with up to 100 Amps peak per channel for 8 seconds
- ☑ Flexible activation accepting either 12V positive power or negative ground triggers
- ☑ Pulse Width Modulation (PWM) compatible at 15Hz for variable accessory control
- ☑ Integrated LED diagnostics and automatic short-circuit, overload, and thermal protection
- ☑ Compact anodized black housing featuring 90-degree rotatable mounting tabs
Technical Specifications
| Brand | MSD Performance |
|---|---|
| Part Number | 75643-HC |
| Channel Count | 4 Independent Channels |
| Continuous Rating | 35 Amps per channel (140 Amps total) |
| Peak Current Rating | 100 Amps per channel (8 seconds maximum) |
| Operating Voltage | 7V – 20V DC |
| Activation Logic | 12V Power or Ground Input per channel |
| PWM Capability | 15 Hz (50% – 90% Duty Cycle) |
| Housing Finish | Anodized Black |
| Safety Features | Auto Short-Circuit, Overload & Over-Temp Protection |
What’s Included in the Box
- 1 x MSD 75643-HC High-Current Solid-State Relay Block (Black)
- 2 x 90-Degree Adjustable Mounting Brackets
- Complete Mounting Fastener Set
Engineered to meet the rigorous demands of professional motorsport, the MSD High-Current Solid-State Relay Block provides unrivaled power distribution and circuit protection. Order from JP Racing today to benefit from fast UK dispatch and dedicated technical support from our motorsport specialists.
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