simpleSwitch 240-M with clamp-on sensors
simpleSwitch 240-M with clamp-on sensors, whole-house load manager: Clamps on the main service watch total load and pause the charger circuit when the house...
All panel helpers / simpleSwitch 240-M with clamp-on sensors

simpleSwitch
240-M with clamp-on sensors
The cheapest whole-house watchdog here. It does not slow the car down, it just turns it off until the oven is done.
Details
| Type | Whole-house load manager |
|---|---|
| How it works | Clamps on the main service watch total load and pause the charger circuit when the house goes over 80% of panel capacity. |
| Current | Up to 240 A |
| Works with | Any charger. It switches the circuit. |
| Installation | Electrician installs. |
| Listing | UL Listed, file E510161 (standard not named on the product page) |
| App | No. |
| Price | About $140. Suggested price for the controller. Installation extra. |
Source: simpleswitch.io, October 2026.