How Strain Guard Works
A shore power connector was designed to carry current, not to carry a cord. Strain Guard puts the cord’s weight where it belongs — on the side of the vehicle instead of on the pins.
No tools. No wiring. No new electrical connection. It works with the inlet and the cord you already own.
Michigan Inventors Summit 2026
Strain Guard cradles the connector and supports the cable behind it. Their own weight holds the device against the side of the vehicle, so the load travels through Strain Guard to the coach wall instead of through the connector pins.
Nothing clips on. Nothing locks. Nothing gets wired in.
There is nothing to fail and nothing to update.
1. Connect your Power Cable
Easy as 1, 2, 3.
Plug in as usual, and secure the locking ring per your manufacturer’s directions.
2: Install the Strain Guard Device
- Cradle the connector in the device. Support the cable behind it. Let it rest against the vehicle. Secure the velcro fastener.
3: Time to Relax
- That’s it. The cord’s weight now rests on the vehicle, not on the connection.
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Fits the 50-to-30 adapter.
A 50-amp cord often bends where it meets the camper, and Strain Guard needs a straight run. If you connect through a 50-to-30 adapter at the camper, that adapter is dead straight — and that is exactly what Strain Guard is built for.
"That adapter is dead straight, exactly what your Strain Guard is meant for. The 'landing pad' (my words) sits perfectly between the bottom of the plug and the black body molding below."
— Strain Guard customer, August 2026
The Strain Guard Advantage
I have a Surge Supressor.
“I already have a surge protector.”
Worth having — but those devices watch the electricity. They don’t watch the mechanics. A perfectly clean 120 volts through a loose contact still makes heat, and the monitor has nothing to report, because nothing is wrong with the power.
A portable unit sits at the pedestal, so your cord and inlet are downstream of it. A hardwired unit sits inside the coach, so the inlet is upstream of it. Either way, the connection itself is the part nothing is looking at.
An EMS watches the power coming in. Strain Guard supports the connection that power comes through.
Carries the load
A 50-amp cord puts about eight pounds of dead weight on the connector. Strain Guard is designed to carry it instead.
Built for longevity
Engineered with heavy-duty materials to withstand harsh weather and constant use, ensuring your investment stays protected for years.
Nothing wired in
Passive and mechanical. No electronics, no batteries, no added electrical connection, no new failure point.
Supports the bend
The cable is supported behind the connector rather than hanging off it, so the jacket isn’t working against a hard bend every time you park.
Peace of mind
Rest easy knowing your shore power connection is mechanically secure, reducing the risk of overheating and connector failure.
Works with what you own
No proprietary inlet, no new cord, no installation. It fits the rig and the cable already in your bay.