Need a cheap, simple device to prevent auto-restart of a subpanel after a power outage or generator transfer switch activation, to avoid overloading backup generator.

Existing anti-restart solutions are either per-equipment (costly for multiple loads) or expensive industrial enclosures; no cheap, simple option exists for a whole subpanel.

Severity

3Medium

Willingness to Pay

implied

Added

May 30, 2026

Workarounds Described

Build an enclosure and manually put together a relay to handle this

App Concept

SubPanel SafeStart

A compact, affordable anti-restart relay module that installs in a subpanel to delay or prevent automatic reclosure after power restoration. It monitors voltage and only reconnects after a manual reset or adjustable delay, protecting backup generators from overload. Costs a fraction of industrial alternatives.

Key Features

Easy DIN-rail mount in subpanel
Adjustable restart delay (1-60 minutes)
Manual reset button or automatic after delay
LED status indicators for power and restart state
Rated for 100A/240V subpanels

Target Users: Electricians and electrical contractors installing subpanels with backup generators in residential or light commercial settings.

Revenue Model: $49.99 per unit, sold through electrical supply distributors and online

Existing Solutions Mentioned

Anti-restart devices at equipment levelExpensive enclosure anti-restart setups for 3p motors

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