Enphase Split-Core Consumption Monitoring CT for IQ Gateway – CT-200-SPLIT
SKUCT-200-SPLIT
The Enphase CT-200-SPLIT is a split-core 200 A current transformer for metered IQ Gateways (and IQ Combiner) to measure household consumption without cutting the conductor.
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Product Overview
The Enphase CT-200-SPLIT is a split-core 200 A current transformer for metered IQ Gateways (and IQ Combiner) to measure household consumption without cutting the conductor.
Accuracy is ±2.5% on Enphase Americas documentation. The IQ Gateway has metering ports for up to two consumption CTs (DSH-00111-6.0).
Best For
- Adding consumption metering to a metered IQ Gateway that does not already have clamp CTs installed.
- Retrofits where a split-core CT is preferred so the conductor does not need to be cut (unlike a solid-core production CT).
Key Features & Specifications
| Specification | Details |
|---|---|
| Product type | Split-core consumption / metering CT |
| Model | CT-200-SPLIT (also referenced as U40002 on the QIG) |
| Primary rating | 200 A; 250 V; 45–66 Hz (QIG) |
| Accuracy (Enphase) | ±2.5% |
| Aperture | 24.38 mm × 21.33 mm (0.96 in × 0.84 in) |
| Use | Indoor; with IQ Gateway / IQ Combiner consumption or battery metering ports as documented |
| Ambient (QIG) | −40°C to 65°C |
| Source | Enphase IQ Gateway DSH-00111-6.0; Enphase CT-200-SPLIT QIG; Enphase Component List MKT-00843-1.0 |
What You May Also Need
Usually required
- A metered IQ Gateway or IQ Combiner with available consumption CT terminals.
May be required
- IQ Gateway ENV2-IQ-AM1-240 when a standalone gateway needs consumption CTs.
- CT-200-CLAMP if the combiner or design calls for clamp-style CTs instead of split-core.
Optional upgrades
- Monitoring & Control: Related metering and monitoring accessories.
Check current manufacturer documentation before combining components, especially batteries, inverters, communications equipment and system-control hardware.
Important Considerations
- Follow Enphase polarity / arrow orientation; reversed CTs produce incorrect import/export readings.
- IQ Combiner 5 ships with two consumption clamp CTs; IQ Combiner 6C consumption CTs are ordered separately (DSH-00585-4.0). Match the CT type the QIG specifies for that enclosure.
- Professional installation required. Follow Enphase instructions and the NEC.

