# Shelly Pro 3EM Switch Add-On Extends The Possibilities Of The Shelly Pro 3EM

## Shelly Pro 3EM Switch Add-On Extends The Possibilities Of The Shelly Pro 3EM

The Shelly Pro 3EM Switch Add-On is a DIN-rail-mounted, galvanically isolated relay module that extends the Shelly Pro 3EM energy meter with a physical switching output. It uses a dry-contact relay to control contactors or other electrical equipment, enabling automations such as load shedding, solar panel switching, or wind turbine control based on the Pro 3EM's real-time energy measurements.

### Specifications

**SKU**

SHELLY PRO 3EM SWITCH ADD-ON

**Brand**

Shelly

**Category**

Smart Home

**Key Specs**

Compatibility: Shelly Pro 3EM only; Mounting: DIN rail, attaches directly to Pro 3EM; Output: dry contact relay, 2A switching capacity; Terminals: screw terminals, 0.5-2.5mm² / 20-14 AWG wire, max torque 0.4 Nm; Max altitude: 2000m; Warranty: 5 years

## Details

- **Price:** 659.0 ZAR
- **Vendor:** Shelly
- **Type:** Smart Home
- **Tags:** Nology, Shelly, Smart Home

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 659.00 ZAR | In stock |

## Images

- Shelly Pro 3EM Switch Add-On Extends The Possibilities Of The Shelly Pro 3EM

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> Source: [Guards On Duty Shop & Security Guards ](https://guardsondutyshop.co.za/products/shelly-shelly-pro-3em-switch-add-on)
> Updated: 2026-07-07