

Overview
The SONOFF BASIC-ZB1GSP is a Zigbee switch for high-power circuits, built to clip onto a 35 mm DIN rail inside your distribution board. It suits heavy loads such as water heaters, underfloor heating, heat pumps, EV chargers and pool pumps.
It breaks both live and neutral, logs energy use for each circuit, and can disconnect power automatically once limits you set have been exceeded.
- At a glance
- Brand
- SONOFF
- Model
- BASIC-ZB1GSP
- Model
- BASIC-ZB1GSP
- Protocol
- Zigbee
- Max load
- 32A / 7680W
What it does
Rated up to 32A / 7680W, for demanding circuits beyond the reach of plug-in switches
Real-Time Energy Monitoring: Tracks voltage, current, power and energy consumption.
Double-Pole Switching: Switches both live and neutral conductors.
Editable overload limits for voltage, current and power
DIN-Rail Mounting: Fits standard DIN rails inside suitable electrical distribution boards.
Zigbee 3.0 Connectivity: Connects to a compatible Zigbee hub for smart control and automation.
Specifications
From the manufacturer's data. Check the label on the device if your installation depends on a rating.
| Model | BASIC-ZB1GSP |
|---|---|
| Protocol | Zigbee |
| Max load | 32A / 7680W |
| Voltage | 100–240V AC, 50/60 Hz |
| Switching | double-pole (live and neutral) |
| Energy monitoring | voltage, current, power, energy (kWh) |
| Mounting | standard 35 mm DIN rail |
| Size and weight | 84 × 66.5 × 18 mm, 92.1 g |
| Operating temperature | −15 °C to 50 °C |
Before you install
- Fit it behind a suitable upstream MCB or RCBO matched to the circuit's rating.
- Professional fitting is advisable.
- Anything wired into mains power should be fitted by a qualified electrician.


