Buy wound current transformers online
Wound current transformers are a suitable choice for compact installation situations and defined measurement tasks. They are typically selected when mounting space, conductor routing and the desired current ratio need to be coordinated very precisely.
What matters when choosing
- Available mounting space in the cabinet or housing
- Current ratio and burden matched to the measurement task
- Connection concept for the secondary side and downstream meter
Direct access to products
Use the product overview to compare wound current transformers directly. For planning details such as current range, accuracy class and compact installation, the technical guide provides the right background.
Need the full transformer overview first? Current transformers and measurement technology.
Wound vs clamp-on current transformers
| Criterion | Wound CT | Clamp-on CT |
|---|---|---|
| Size | Very compact | Larger |
| Primary winding | Conductor through core | Mounted on busbar |
| Current range | 1 A – 200 A | 5 A – 4000 A |
| Best for | Sub-distributions, tight spaces | Main distributions |
Typical applications for wound CTs
Wound current transformers excel in compact installations where space is at a premium. Common use cases include sub-distribution boards in residential and commercial buildings, energy monitoring with MID meters in multi-tenant properties, UPS systems and battery storage installations. Their small form factor allows mounting directly on DIN rails or within narrow enclosures.