# Shelly 50A Clamp Split Core Current Transformer ONLY Compatible With Shelly EM

## Shelly 50A Clamp Split Core Current Transformer ONLY Compatible With Shelly EM

This is the original split-core 50A current transformer clamp made for the legacy Shelly EM and Shelly 3EM devices (the older 4-pin screw-terminal generation), used to non-invasively measure current on a single circuit by clamping around the live conductor. It is explicitly NOT compatible with the newer Shelly EM Gen3, Shelly EM Gen4, Shelly Pro EM-50, or Shelly Pro 3EM, which use a different connector and calibration. Two of these clamps can be connected to one legacy Shelly EM for dual-circuit monitoring.

### Specifications

**SKU**

SHELLY 50A CLAMP

**Brand**

Shelly

**Category**

Smart Home

**Key Specs**

Compatible with: legacy Shelly EM and Shelly 3EM ONLY (not Gen3/Gen4/Pro); Rated primary current: 50A; Clamp type: split-core ferrite, internal diameter 11mm; Accuracy: 1%; Electrical strength: 3000VAC 1mA/60s; Rated secondary current: 16.67mA; Saturation current: ≥85A; Cable length: 60cm; Dimensions: 23.5x41.5x26mm

## Details

- **Price:** 409.0 ZAR
- **Vendor:** Shelly
- **Type:** Smart Home
- **Tags:** Nology, Shelly, Smart Home

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 409.00 ZAR | In stock |

## Images

- Shelly 50A Clamp Split Core Current Transformer ONLY Compatible With Shelly EM

---

> Source: [Guards On Duty Shop & Security Guards ](https://guardsondutyshop.co.za/products/shelly-shelly-50a-clamp)
> Updated: 2026-07-07